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Page last updated
Wed 02 Sep 2020

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

The nominal species (available and otherwise) in this synonymy are listed by usage rather than strictly by publication date. The primary sorting order is by the most recent year (since 1969) that the species name was treated as valid, and then nominal species are sorted secondarily by publication year.

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Bivalvia | Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio

species Unio crassus Philipsson in Retzius, 1788: synonymy
     121 specimens available.

Unio crassus Retzius, 1788
Schröter, 1779, Gesch. Flußconch.: 182, pl. 2, fig. 2 [Mya testa crassa]. [non-binomial]
Philipsson in Retzius, 1788, Diss. Nat.-Hist. Test. Gen.: 17.

Unio crassusRetzius (1788), Spengler (1793), Nilsson (1822), Menke (1828), Menke (1830), Rossmässler (1835), Rossmässler (1837), Zelebor (1851), Küster (1854), Drouët (1881), Schröder (1885), Westerlund (1890), Kobelt & Haas (1911), Ortmann (1912), Ortmann (1914), Germain (1931), Zhadin (1965), Dyduch-Falniowska & Koziol (1989), Nagel et al. (1998), Bába (2000), Gerke & Tiedemann (2001), Nagel & Badino (2001), Soroka (2005), Källersjö et al. (2005), Graf & Cummings (2007), Graf (2007), Manendo et al. (2008), Dhora (2009), Araujo et al. (2009), Soroka (2010), Bogan (2010), Khalloufi et al. (2011), Plazzi et al. (2011), Prie et al. (2012), Zieritz et al. (2012), Sell et al. (2013), Reis et al. (2013), IUCN (2014), Douda et al. (2014), Froufe et al. (2016), Lopes-Lima et al. (2017), Bolotov et al. (2017), Bolotov et al. (2017), Burzynski et al. (2017), Liu et al. (2017), Soroka & Burzynski (2017), Wang et al. (2018), Bogatov et al. (2018), Burzynski & Soroka (2018), Aunins et al. (2018), Wang et al. (2018), Anisimova et al. (2018), Araujo et al. (2018), Cha et al. (2018), Zieritz et al. (2018), Wu et al. (2018), Klishko et al. (2018), Bolotov et al. (2018), Huang et al. (2018), Huang et al. (2019), Fukata & Iigo (2019), Wu et al. (2019), Klishko et al. (2019), Froufe et al. (2019), Fukata & Iigo (2020), Wu et al. (2020), Lopes-Lima et al. (2020), Bolotov et al. (2020), Múrria et al. (2020)
Margarita (Unio) litoralisLea (1836)
Mysca crassaSchlüter (1838)
Margaron (Unio) crassusLea (1852), Lea (1870)
Unio (Potamida) crassusMörch (1853)
Unio (Lymnium) crassusMoquin-Tandon (1855), Drouët (1857)
Unio (Bariosta) crassusAdams & Adams (1857)
Unio crassus s.s.Westerlund (1867)
Unio batavus var. crassusClessin (1877)
Unio (Crassiana) crassusServain (1882), Servain (1888), Locard (1889), Vinarski & Kantor (2016)
Unio (Groupe de l’U. crassus) crassusLocard (1882)
Unio (sec. Hyridella) crassusPaetel (1890)
Unio (Groupe de l’U. feliciani) crassusLocard (1893)
Margaritana crassaSimpson (1900), Simpson (1914)
Unio (s.s.) crassusZhadin (1938)
Unio crassus crassusHaas (1940), Haas (1969), Fauna Europaea (2012), Prié & Puillandre (2014), Klishko et al. (2017), Lopes-Lima et al. (2017)
Crassiana crassa crassaAkromovski (1976), Kantor & Sysoev (2005), Kantor et al. (2010)
Batavusiana (Crassunio) crassaZatravkin (1983), Stadnichenko (1984), Zatravkin (1987)
Unio (Crassunio) crassusFalkner (1994)
Batavusiana (Crassiana) crassusKorniushin (1998)
Unio (Crassiana) crassus crassusFalkner et al. (2001), Falkner et al. (2002)
Crassiana (s.s.) crassaStarobogatov et al. (2004)

Unio courtillieri Hattemann, 1859
Hattemann, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 232.

Unio courtillieriHattemann (1859)
Unio batavus var. courtilieride Joannis (1859)
Unio (Fusculusiana) fusculusLocard (1889), Germain (1904)
Unio crassus var. piscinalisGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969), Lopes-Lima et al. (2017)
Unio (Crassiana) crassus courtillieriFalkner et al. (2001), Falkner et al. (2002)
Unio crassus courtillieriPrié & Puillandre (2014)
Unio crassus cf. courtillieriKlishko et al. (2017)
Unio crassus courtillieriiAraujo et al. (2018)

Mya batava Maton & Rackett, 1807
Schröter, 1779, Gesch. Flußconch.: pl. 3, figs. 2, 4-5.
Martini & Chemnitz, 1782, Conchyl. Cab. 6: 19, pl. 1, fig. 6.
Maton & Rackett, 1807, Trans. Linn. Soc. London 8: 37.

Mya batavaMaton & Rackett (1807), Dillwyn (1817), Wood (1825)
Unio batavaLamarck (1819), Pfeiffer (1821), Bory de St. Vincent (1827), Kickx (1830), Deshayes (1830), Ravenel (1834), Lea (1834), Jay (1835), Krynicki (1837), Morelet (1853), Sowerby (1866), Malzine (1867)
Unio batavusNilsson (1822), Wood (1828), Menke (1828), Menke (1830), Rossmässler (1835), Rossmässler (1836), Charpentier (1837), Rossmässler (1837), Rossmässler (1842), Hanley (1843), C.B. Adams (1847), Zelebor (1851), Küster (1855), de Joannis (1859), Colbeau (1868), Clessin (1877), Servain (1881), Drouët (1881), Drouët (1889), Baichère (1890), Westerlund (1890), Kobelt & Haas (1911), Haas (1924), Germain (1931)
Unio pictorumLea (1829), Leach (1852)
Margarita (Unio) batavaLea (1836)
Mysca batavaSchlüter (1838)
Mysca (s.s.) batavaSwainson (1840)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Batavi) batavusDupuy (1852)
Unio (Lymnium) batavusMoquin-Tandon (1855), Drouët (1857)
Unio (Hyridella) batavusAdams & Adams (1857)
Unio crassus var. batavusWesterlund (1867)
Unio (Groupe de l’U. Batavus) batavusLocard (1882)
Unio (Bataviana) batavusServain (1888)
Unio (Batavusiana) batavusLocard (1889), Germain (1904)
Unio (sec. Hyridella) batavusPaetel (1890)
Unio (Groupe de l’U. batavus) batavusLocard (1893)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (Groupe des Batavusiana) batavusCaziot (1907)
Unio crassus musivusOrtmann (1912)
Unio crassus batavusHaas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Batavusiana (s.s.) musivaZatravkin (1983), Zatravkin (1987)
Unio (Crassiana) crassusVinarski & Kantor (2016)
Unio crassusAraujo et al. (2018)

Unio cytherea Küster, 1833
Küster, 1833, Icones Moll. Test. Abthl. 2: pl. 5, fig. 3.

Unio cythereaKüster (1833)
Unio (Mysca) conusMörch (1863)
Unio cytherea cythereaHaas (1913)
Unio crassus cythereaHaas (1940), Haas (1969), Fauna Europaea (2012), Prié & Puillandre (2014), Lopes-Lima et al. (2017)
Unio (Crassiana) crassus cythereaFalkner et al. (2001), Falkner et al. (2002)
Unio (Crassiana) crassusVinarski & Kantor (2016)
Unio crassusAraujo et al. (2018)

Unio carneus Küster, 1854
Küster, 1854, Conchyl. Cab. 9(2): 103, pl. 28, figs. 1-2.

Unio carneusKüster (1854), Westerlund (1890)
Margaron (Unio) petterianusLea (1852), Lea (1870)
Unio (sec. Lymnium) carneusSimpson (1900), Simpson (1914)
Unio crassus carneusHaas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Batavusiana (s.s.) nana carneaStadnichenko (1984)
Crassiana nana carneaKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusIUCN (2014), Araujo et al. (2018)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio gontierii Bourguignat, 1856
Bourguignat, 1856, Aménités Malacol. 2: 33, pl. 4, figs. 1-4.

Unio gontieriiBourguignat (1856), Drouët (1881)
Margaron (Unio) gontieriiLea (1870)
Unio stevenianusKobelt (1886), Zhadin (1965)
Unio gontieriWesterlund (1890)
Unio (sec. Lymnium) carneusSimpson (1900), Simpson (1914)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007), Lopes-Lima et al. (2017)
Batavusiana (s.s.) musiva gontieriStadnichenko (1984)
Unio (Crassunio) crassus gontieriiFalkner (1994)
Crassiana musiva gontieriKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusIUCN (2014), Araujo et al. (2018)

Unio musivus Spengler, 1793
Spengler, 1793, Skr. Naturhist. Selsk. 3: 67, no. 32.

Unio musivusSpengler (1793), Simpson (1900)
Unio crassus musivusOrtmann (1912)
Unio (sec. Lymnium) batavusSimpson (1914)
Unio crassus crassusHaas (1940), Haas (1969), Fauna Europaea (2012), Klishko et al. (2017)
Batavusiana (s.s.) musivaZatravkin (1983), Zatravkin (1987)
Batavusiana (s.s.) musivus [??]Korniushin (1998)
Crassiana (Bataviana) musivaStarobogatov et al. (2004)
Crassiana musiva musivaKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusGraf (2007), Anisimova et al. (2018), Bogatov et al. (2018)
Unio (Crassiana) musivusVinarski & Kantor (2016)

Unio nana Lamarck, 1819
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 76, sp. 27.

Unio nanaLamarck (1819), Westerlund (1890), Kobelt & Haas (1911)
Unio littoralisLea (1834), Hanley (1843)
Margarita (Unio) litoralisLea (1836)
Margaron (Unio) litoralisLea (1852), Lea (1870)
Unio (Batavi) nanusDupuy (1852)
Unio (Lymnium) batavus var. L nanusMoquin-Tandon (1855)
Unio batavus var. nanusde Joannis (1859)
Unio litoralisReeve (1865)
Unio nanusKobelt (1879)
Unio (Groupe de l’U. mancus) nanusLocard (1882)
Unio (Nanusiana) nanusLocard (1889)
Unio (sec. Hyridella) batavus vr. nanusPaetel (1890)
Unio (Groupe de l’U. nanus) nanusLocard (1893)
Unio (groupe de l’U. nanus) nanusDumas (1895)
Unio (sec. Lymnium) littoralisSimpson (1900), Simpson (1914)
Unio (Rhomboïdiana) nanaGermain (1904)
Unio (Groupe des Ninusiana) nanusCaziot (1907)
Unio mancus var. nanusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)
Batavusiana (s.s.) nanaZatravkin (1983), Zatravkin (1987)
Unio (Crassiana) crassus nanusFalkner et al. (2001), Falkner et al. (2002)
Crassiana (Bataviana) nanaStarobogatov et al. (2004)
Crassiana nana nanaKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusGraf (2007), Anisimova et al. (2018), Bogatov et al. (2018)
Unio crassus nanusPrié & Puillandre (2014)
Unio (Crassiana) nanaVinarski & Kantor (2016)
Unio crassus crassusKlishko et al. (2017)

Unio fusculus Rossmässler, 1836
‘Z.’ Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 21.
‘Ziegler’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 30, pl. 15, fig. 211.

Unio fusculusRossmässler (1836), Zelebor (1851)
Unio batavusRossmässler (1835), Westerlund (1890)
Margarita (Unio) batavaLea (1836)
Mysca batava var. fusculaSchlüter (1838)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Lymnium) batavus var. E ripariusMoquin-Tandon (1855)
Unio batavus var. crassusClessin (1877)
Unio (Groupe de l’U. fusculus) fusculusLocard (1882), Locard (1893)
Unio (Fusculusiana) fusculusLocard (1889), Germain (1904)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus var. piscinalisGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)
Batavusiana (s.s.) fusculaZatravkin (1983), Zatravkin (1987)
Batavusiana (s.s.) fuscula fusculaStadnichenko (1984)
Crassiana (Bataviana) fusculaStarobogatov et al. (2004)
Crassiana fusculaKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusGraf (2007)
Unio (Crassiana) fusculusVinarski & Kantor (2016)
Unio crassus crassusKlishko et al. (2017)

Unio byzantinus Drouët, 1879
‘Parr.’ Lea, 1870, Synopsis Fam. Naiades: 48. [nomen nudum]
‘Parreyss, in sched.’ Drouët, 1879, J. de Conch. 27: 141.

Unio byzantinusDrouët (1879), Kobelt (1880), Westerlund (1890)
Margaron (Unio) batavusLea (1870)
Eolymnium (Shadininaia) byzantinumZatravkin (1983), Zatravkin (1987)
Eolymnium (Shadininaia) byzantinusKorniushin (1998)
Unio crassus gontieriGraf (2007)
Eolymnium byzantinumKantor et al. (2010)
Unio (Eolymnium) byzantinusVinarski & Kantor (2016)

Unio araxenus Drouët, 1881
Drouët, 1881, Unionidae Russie: 18.

Unio araxenusDrouët (1881), Kobelt (1886), Paetel (1890), Westerlund (1890)
Unio (s.s.) sieversi var. araxenusZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Unio sieversi var. araxenusZhadin (1965)
Crassiana crassa sieversiAkromovski (1976), Kantor & Sysoev (2005)
Eolymnium (Shadininaia) araxenumZatravkin (1983), Zatravkin (1987)
Eolymnium araxenumKantor et al. (2010)
Unio (Eolymnium) araxenusVinarski & Kantor (2016)

Unio colchicus Drouët, 1881
Drouët, 1881, Unionidae Russie: 18.

Unio colchicusDrouët (1881), Kobelt (1886), Westerlund (1890)
Unio (s.s.) sieversi var. colchicusZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Unio sieversi var. colchicusZhadin (1965)
Crassiana crassa sieversiAkromovski (1976), Kantor & Sysoev (2005)
Eolymnium (Shadininaia) colchicumZatravkin (1983), Zatravkin (1987)
Eolymnium colchicumKantor et al. (2010)
Unio (Eolymnium) colchicusVinarski & Kantor (2016)

Unio mingrelicus Drouët, 1881
Drouët, 1881, Unionidae Russie: 16.

Unio mingrelicusDrouët (1881), Kobelt (1886), Westerlund (1890), Zhadin (1965), Bába (2000), Kantor & Sysoev (2005)
Unio (s.s.) mingrelicusZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Unio (Limnium) huetiBiggs (1971)
Batavusiana (s.s.) mingrelicaZatravkin (1983), Zatravkin (1987)
Batavusiana (s.s.) mingrelicusKorniushin (1998)
Crassiana mengrelicaKantor et al. (2010)
Unio (Crassiana) mengrelicusVinarski & Kantor (2016)

Unio raddei Drouët, 1881
Drouët, 1881, Unionidae Russie: 17.

Unio raddeiDrouët (1881), Kobelt (1886), Westerlund (1890)
Unio (s.s.) sieversi var. raddeiZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Eolymnium (Shadininaia) raddeiZatravkin (1983), Zatravkin (1987)
Eolymnium raddeiKantor et al. (2010)
Unio (Eolymnium) raddeiVinarski & Kantor (2016)

Unio cyprinorum Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 289, 358.
‘Berthier’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 142 [36].
‘Berthier’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 168.
Type(s): IDIOTYPE MNHN_22185, l’Ornain (Meuse).

Unio cyprinorumLocard (1882)
Unio (Bataviana) cyprinorumServain (1882), Servain (1888)
Unio (Groupe de l’U. Batavus) cyprinorumLocard (1882)
Unio (Batavusiana) cyprinorumLocard (1889)
Unio batavus var. cyprinorumWesterlund (1890)
Unio (Groupe de l’U. batavus) cyprinorumLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)
Crassiana (Bataviana) cyprinorumStarobogatov et al. (2004)
Crassiana cyprinorumKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusGraf (2007)
Unio (Crassiana) cyprinorumVinarski & Kantor (2016)

Unio raddei var. koutaisiana Kobelt, 1886
Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 40, pl. 52, fig. 283.
(intro'd as intra-sp. of Unio raddei Drouët, 1881)

Unio raddei var. koutaisianaKobelt (1886), Westerlund (1890)
Unio (s.s.) sieversi var. kutaisianaZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Eolymnium (Shadininaia) kutaisianumZatravkin (1983), Zatravkin (1987)
Eolymnium koutaisianumKantor et al. (2010)
Unio (Eolymnium) koutaisianaVinarski & Kantor (2016)

Unio ater var. irgizlaicus Lindholm, 1904
Lindholm, 1904, Ann. Mus. St. Pétersbourg 8(3-4): 343.
(intro'd as intra-sp. of Unio ater Nilsson, 1822)

Unio ater var. irgizlaicusLindholm (1904)
Unio crassus crassusHaas (1969), Klishko et al. (2017)
Batavusiana (s.s.) irgislaicaZatravkin (1987)
Crassiana (Bataviana) irgizlaicaStarobogatov et al. (2004)
Crassiana irgizlaicaKantor & Sysoev (2005), Kantor et al. (2010)
Unio crassusGraf (2007)
Unio (Crassiana) irgizlaicusVinarski & Kantor (2016)

Unio gregorii Kobelt, 1911
Kobelt, 1911, Icon. Land- und Süssw.-Moll. 18: 30, pl. 494, fig. 2632.

Unio gregoriiKobelt (1911)
Unio (s.s.) mingrelicus var. gregoriiZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Batavusiana (s.s.) gregoriiZatravkin (1983), Zatravkin (1987)
Crassiana gregoriiKantor et al. (2010)
Unio (Crassiana) gregoriiVinarski & Kantor (2016)

Unio kungurensis irenjensis Kobelt, 1911
Kobelt, 1911, Icon. Land- und Süssw.-Moll. 18: 26, pl. 491, fig. 2626.
(intro'd as intra-sp. of Unio kungurensis Kobelt, 1911)

Unio kungurensis irenjensisKobelt (1911)
Unio (s.s.) crassus var. chlebnikoviZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Batavusiana (s.s.) irenjensisZatravkin (1983), Stadnichenko (1984), Zatravkin (1987)
Crassiana irenjensisKantor & Sysoev (2005), Kantor et al. (2010)
Unio (Crassiana) irenjensisVinarski & Kantor (2016)

Unio mingrelicus var. sobriewskii Rosén, 1925
Rosén, 1925, Izvest. Donsk. Politek. Instit. Novoch. 9: 8, fig. 2.
(intro'd as intra-sp. of Unio mingrelicus Drouët, 1881)
Type(s): LECTOTYPE ZIN_AN_SSSR_1,

Unio mingrelicus var. sobriewskiiRosén (1925)
Batavusiana (s.s.) sobriewskiiZatravkin (1983), Zatravkin (1987)
Unio crassus gontieriGraf (2007)
Crassiana sobriewskiiKantor et al. (2010)
Unio (Crassiana) sobrievskiiVinarski & Kantor (2016)

Unio mingrelicus var. stevenianiformis Zhadin, 1938
Zhadin, 1938, Faune USSR Mollusques 4(1): 96, text fig. 28.
(intro'd as intra-sp. of Unio mingrelicus Drouët, 1881)

Unio mingrelicus var. stevenianiformisZhadin (1938)
Unio (s.s.) mingrelicus var. stevenianiformisZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969), Graf (2007)
Batavusiana (s.s.) stevenianiformisZatravkin (1983)
Batavusiana (s.s.) stevenianiformesZatravkin (1987)
Crassiana stevenianiformisKantor et al. (2010)
Unio (Crassiana) stevenianiformisVinarski & Kantor (2016)

Unio sieversi Drouët, 1881
Drouët, 1881, Unionidae Russie: 17.

Unio sieversiDrouët (1881), Kobelt (1886), Westerlund (1890), Zhadin (1965), Bába (2000)
Unio (s.s.) sieversiZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)
Crassiana crassa sieversiAkromovski (1976), Kantor & Sysoev (2005), Kantor et al. (2010)
Eolymnium (Shadininaia) byzantinumZatravkin (1983), Zatravkin (1987)
Eolymnium (Shadininaia) byzantinusKorniushin (1998)
Unio (Eolymnium) byzantinusVinarski & Kantor (2016)

Unio stepanoffi Drouët, 1881
Drouët, 1881, Unionidae Russie: 15.

Unio stepanoffiDrouët (1881), Kobelt (1886), Westerlund (1890), Kantor et al. (2010)
Unio (s.s.) crassus var. stepanoviZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)
Unio stevenianusZhadin (1965)

Unio riparia Pfeiffer, 1821
Bruguière, 1797, Encycl. Méth. 2: pl. 249, fig. 4a-b [as Unio sp.].
Pfeiffer, 1821, Natur. Deutsch. Land Sussw. Moll. 1: 118, pl. 5, fig. 13.
Scholtz, 1843, Land- und Wassermoll. Schlesiens: 129. [nomen nudum]

Unio ripariaPfeiffer (1821), Krynicki (1837)
Unio ripariusMenke (1828), Menke (1830), Servain (1885), Westerlund (1890)
Unio batavusRossmässler (1835)
Margarita (Unio) batavaLea (1836)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Lymnium) batavus var. E ripariusMoquin-Tandon (1855)
Unio (Groupe de l’U. fusculus) ripariusLocard (1882)
Unio (Amniciana) ripariusServain (1888)
Unio (Amnicusiana) ripariusLocard (1889)
Unio (sec. Hyridella) batavus vr. ripariusPaetel (1890)
Unio (Groupe de l’U. amnicus) ripariusLocard (1893)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (Socardiana) ripariusGermain (1904)
Unio mancus var. amnicus form ripariusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)
Unio (Crassiana) crassus ripariusFalkner et al. (2001), Falkner et al. (2002)
Unio crassus crassusLopes-Lima et al. (2017)

Unio decurvatus Rossmässler, 1835
Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 22, pl. 9, fig. 131.
Rossmässler, 1837, Icon. Land- und Süssw.-Moll. 1 (5-6): 21, pl. 24, fig. 339.

Unio decurvatusRossmässler (1835), Rossmässler (1837), J.F. Schmidt (1840), C.B. Adams (1847), Küster (1854), Sowerby (1867), Westerlund (1890)
Margarita (Unio) batavaLea (1836)
Mysca decurvataSchlüter (1838)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Sandriana) decurvatusLocard (1889)
Unio (s.s.) decurvatusPaetel (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (Crassiana) crassus decurvatusFalkner et al. (2001)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio batavus var. albensis Hazay, 1885
Hazay, 1885, Jb. Dtsch. Malak. Ges. 12: 43.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. albensisHazay (1885), Westerlund (1890)
Unio albensisKobelt (1890)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassus albensisFalkner et al. (2001)
Unio crassus batavusLopes-Lima et al. (2017)

Unio batavus var. ondovensis Hazay, 1885
Hazay, 1885, Jb. Dtsch. Malak. Ges. 12: 43.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. ondovensisHazay (1885), Westerlund (1890)
Unio ondovensisKobelt (1890)
Unio crassus cythereaHaas (1940), Haas (1969), Lopes-Lima et al. (2017)
Unio (Crassiana) crassus ondovensisFalkner et al. (2001)

Unio stevenianus Drouët, 1881
Krynicki, 1837, Bull. Soc. imp. Nat. Moscou 10(2): 59 [as ‘steveniana’]. [nomen nudum]
‘Krynicki’ Drouët, 1881, Unionidae Russie: 14.
‘Krynicki’ Drouët, 1881, J. de Conch. 29: 24.
Drouët, 1884, Suppl. Unionidae de Serbie: pls. 1-2.

Unio stevenianusDrouët (1881), Drouët (1881), Kobelt (1886), Westerlund (1890), Zhadin (1965)
Unio stevenianaKrynicki (1837)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (s.s.) stevenianusZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)
Crassiana crassa sieversiAkromovski (1976), Kantor & Sysoev (2005)
Batavusiana (s.s.) musivaZatravkin (1987)
Unio stevenianiusBába (2000)
Unio (Crassiana) musivusVinarski & Kantor (2016)

Unio littoralis var. minor Rossmässler, 1842
Rossmässler, 1842, Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, figs. 744. [in part]
(misidentified reference to Unio littoralis var. minor Rossmässler, 1842)

Unio littoralis var. minorRossmässler (1842)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (Tumidusiana) tumidus var. minorStadnichenko (1984)

Mya ovalis Lightfoot, 1786
Lister, 1685, Conch.: pl. 146, fig. 1. [pre-linnaean]
‘S.’ Lightfoot, 1786, Catalogue of the Portland Museum: 134, no. 2983.

Mya ovalisLightfoot (1786)
Unio ovalisRetzius (1788)
Mya batavaDillwyn (1817)
Margarita (Unio) batavaLea (1836)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Mysca) limosusMörch (1863)

Mya pictorum Gmelin, 1791
Lister, 1678, Hist. Anim. Anglic.: pl. 2, fig. 30; [app.] pl. 1, fig. 4. [pre-linnaean]
Lister, 1685, Conch.: pl. 146, fig. 1; pl. 147, figs. 2-3. [pre-linnaean]
Schröter, 1779, Gesch. Flußconch.: pl. 2, fig. 2; pl. 3, figs. 2-5; pl. 4, fig. 6.
Martini & Chemnitz, 1782, Conchyl. Cab. 6: 19, pl. 1, fig. 6.
Gmelin, 1791, Syst. Nat. 1(6): 3218, sp. 3.
(misidentified reference to Mya pictorum Linnaeus, 1758)

Mya pictorumGmelin (1791), Schreibers (1793)
Unio pictorumBosc (1801), Deshayes (1830), Küster (1853), Malzine (1867)
Margarita (Unio) batavaLea (1836)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Lymnium) batavusMoquin-Tandon (1855), Drouët (1857)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio margaritifera Draparnaud, 1806
‘Linn.’ Draparnaud, 1806, Hist. Moll. France: pl. 11, fig. 5.
(misidentified reference to Mya margaritifera Linnaeus, 1758)

Unio margaritiferaDraparnaud (1806)
Unio aterNilsson (1822)
Unio sinuatusGassies (1849)
Unio margaritiferKüster (1855)
Unio (Groupe de l’U. Philippei) philippeiLocard (1882)
Unio (Ateriana) breviereiLocard (1889)
Unio consentaneusGermain (1931)

Unio pictorum Draparnaud, 1806
‘Linn.’ Draparnaud, 1806, Hist. Moll. France: 131, pl. 11, figs. 3 [var. B]. [in part]
(misidentified reference to Mya pictorum Linnaeus, 1758)

Unio pictorumDraparnaud (1806), Deshayes (1830)
Unio batavaPfeiffer (1821)
Unio batavusRossmässler (1835), Clessin (1877), Germain (1931)
Margarita (Unio) batavaLea (1836)
Unio requieniiGassies (1849)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Batavi) batavusDupuy (1852)
Unio (Lymnium) batavusMoquin-Tandon (1855), Drouët (1857)
Unio (Batavusiana) seneauxiLocard (1889), Germain (1904)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio lemovicincae Férussac, 1807
‘Linn.’ Draparnaud, 1806, Hist. Moll. France: pl. 11, fig. 5.
Férussac, 1807, Ess. méth.: 114 [as ‘lemovicincæ’].

Unio lemovicincaeFérussac (1807), Menke (1828), Menke (1830), Küster (1861), Westerlund (1890)
Unio margaritiferaPfeiffer (1821), Kickx (1830)
Unio (Margaritana) margaritiferDrouët (1857)
Margaron (Unio) pictorumLea (1870)

Unio dilatatus Studer, 1820
Bruguière, 1797, Encycl. Méth. 2: pl. 249, fig. 4a-b [as Unio sp.].
Studer, 1820, System. Verzeich. bekannt geword. Schweizer-Conchylien: 30.

Unio dilatatusStuder (1820)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Lymnium) batavusMoquin-Tandon (1855)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio ovatus Studer, 1820
Schröter, 1779, Gesch. Flußconch.: pl. 3, figs. 2.
Studer, 1820, System. Verzeich. bekannt geword. Schweizer-Conchylien: 30.
(homonym of Unio ovatus Say, 1817)

Unio ovatusStuder (1820), Servain (1885), Westerlund (1890)
Unio batavus var. ovatusCharpentier (1837)
Margaron (Unio) tumidusLea (1852), Lea (1870)
Unio (Lymnium) batavus var. C ovatusMoquin-Tandon (1855)
Unio (Lymnium) batavusDrouët (1857)
Unio (Fusculusiana) ovatusLocard (1889)
Unio (Groupe de l’U. fusculus) ovatusLocard (1893)
Unio consentaneus ovatusKobelt & Haas (1911)
Unio crassus var. piscinalisGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio planus Studer, 1820
Studer, 1820, System. Verzeich. bekannt geword. Schweizer-Conchylien: 30.

Unio planusStuder (1820)
Margarita (Unio) batavaLea (1836)
Unio limosusCharpentier (1837)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio sinuatus Studer, 1820
Schröter, 1779, Gesch. Flußconch.: 182, pl. 2, fig. 2 [Mya testa crassa]. [non-binomial]
Studer, 1820, System. Verzeich. bekannt geword. Schweizer-Conchylien: 30.
(homonym of Unio sinuata Lamarck, 1819)

Unio sinuatusStuder (1820)
Margarita (Unio) batavaLea (1836)
Unio batavus var. sinuatusCharpentier (1837)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Lymnium) batavus var. M sinuatusMoquin-Tandon (1855)
Margaron (Margaritana) margaritiferaLea (1870)
Unio (Batavusiana) financeiLocard (1889)
Unio squamosusDrouët (1889)
Unio batavusGermain (1931)
Unio crassus cythereaHaas (1940)

Unio litoralis Pfeiffer, 1821
Pfeiffer, 1821, Natur. Deutsch. Land Sussw. Moll. 1: 117, pl. 5, fig. 12.
Rossmässler, 1853, Z. Malak. 10: 92.
Mörch, 1863, Vidensk. Medd. Naturhist. Foren. Kjöben. (17-22): .
(misidentified reference to Unio littoralis Cuvier, 1798; error for Unio littoralis Cuvier, 1798)

Unio litoralisPfeiffer (1821)
Unio crassusNilsson (1822), Menke (1828), Menke (1830), Rossmässler (1835), Küster (1854)
Margarita (Unio) litoralisLea (1836)
Margaron (Unio) litoralisLea (1852), Lea (1870)
Unio (Lymnium) crassusMoquin-Tandon (1855), Drouët (1857)
Unio batavus var. crassusClessin (1877)
Unio batavus var. pseudo-litoralisClessin (1877)
Unio crassus var. maximusKobelt (1884)
Unio pseudolitoralisWesterlund (1890)
Margaritana crassaSimpson (1900), Simpson (1914)
Batavusiana (Crassunio) crassaStadnichenko (1984)
Crassiana crassa crassaKantor & Sysoev (2005), Kantor et al. (2010)

Unio ater Nilsson, 1822
‘Linn.’ Draparnaud, 1806, Hist. Moll. France: pl. 11, fig. 5 [as ‘Unio margaritifera’].
Nilsson, 1822, Hist. Moll. Svec.: 107.

Unio aterNilsson (1822), Rossmässler (1835), Küster (1854), Drouët (1881), Paetel (1890), Westerlund (1890)
Unio lemovicincaeMenke (1828), Menke (1830)
Margarita (Unio) batavaLea (1836)
Unio atraKrynicki (1837)
Unio ater var. ?Rossmässler (1838)
Margaron (Margaritana) margaritiferaLea (1852)
Unio (Lymnium) aterMoquin-Tandon (1855), Drouët (1857)
Unio (Mysca) tumidus limicolaMörch (1863)
Unio crassus var. aterWesterlund (1867)
Margaron (Unio) batavusLea (1870)
Unio batavus var. aterClessin (1877)
Unio (Groupe de l’U. ater) aterLocard (1882), Locard (1893)
Unio (Ateriana) aterLocard (1889)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (s.s.) aterZhadin (1938)
Unio crassus crassusHaas (1940), Haas (1969)
Batavusiana (s.s.) musivaZatravkin (1987)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio batavus Nilsson, 1822
‘Lamarck’ Nilsson, 1822, Hist. Moll. Svec.: 112.
(reference to Mya batava Maton & Rackett, 1807)

Unio batavusNilsson (1822), Clessin (1877)
Unio stevenianaKrynicki (1837)
Unio batavaMalzine (1867)

Unio crassus Nilsson, 1822
‘Retzius’ Nilsson, 1822, Hist. Moll. Svec.: 108.
(reference to Unio crassus Retzius, 1788)

Unio crassusNilsson (1822), Küster (1854)
Margaron (Unio) litoralisLea (1852)
Unio (Lymnium) crassusDrouët (1857)
Margaron (Unio) crassusLea (1870)
Unio batavus var. crassusClessin (1877)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio mytiloides Bory de St. Vincent, 1827
Bruguière, 1797, Encycl. Méth. 2: pl. 249, fig. 4a-b [as Unio sp.].
‘Val.’ Bory de St. Vincent, 1827, Encycl. Méth. 2: 151.
Deshayes, 1830, Enc. Méth. 2: 586.
(homonym of Pleurobema mytiloides Rafinesque, 1820)

Unio mytiloidesBory de St. Vincent (1827), Deshayes (1830)
Quadrula (sec. Fusconaia) pyramidataSimpson (1900), Simpson (1914)
Quadrula (Obliquata) obliquataHaas (1969)
Pleurobema rubrumParmalee & Bogan (1998), Watters et al. (2009)

Unio rubens Menke, 1828
Menke, 1828, Syn. Method. Moll.: 64, 90.
Menke, 1830, Syn. Method. Moll.: 107, 149.

Unio rubensMenke (1828), Menke (1830), Rossmässler (1837)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio crassusKüster (1854)
Unio (Lymnium) crassus var.Drouët (1857)
Unio crassus var. rubensWesterlund (1890)
Quadrula (sec. Fusconaia) coccineaSimpson (1900), Simpson (1914)
Quadrula (Obliquata) coccineaFrierson (1927)
Unio crassus crassusHaas (1940), Haas (1969)
Pleurobema sintoxiaParmalee & Bogan (1998), Williams et al. (2008)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio rugatus Menke, 1828
Menke, 1828, Syn. Method. Moll.: 64, 90.
Menke, 1830, Syn. Method. Moll.: 107, 149.

Unio rugatusMenke (1828), Menke (1830), Rossmässler (1837)
Unio batavusRossmässler (1835), Drouët (1889)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio batavus var. crassusClessin (1877)
Unio crassus var. rugatusWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio consentaneus var.Kobelt & Haas (1911)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio lemovicensis Kickx, 1830
‘Daud.’ Kickx, 1830, Synopsin Molluscorum Brabantiae: 82.
(error for Unio lemovicincae Férussac, 1807)

Unio lemovicensisKickx (1830)

Unio rubens Menke, 1830
Menke, 1830, Syn. Method. Moll.: 149.
(reference to Unio rubens Menke, 1828)

Unio rubensMenke (1830)
Unio (sec. Lymnium) littoralisSimpson (1900), Simpson (1914)

Unio badius Kokeil, 1831
Kokeil, 1831, Mich. Comp.: pl. 16, fig. 36.

Unio badiusKokeil (1831), J.F. Schmidt (1840)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (s.s.) badiusPaetel (1890)
Unio batavusWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio castaneus Fitzinger, 1833
Fitzinger, 1833, Syst, Verz. Österr. Weichth.: 119.
(homonym of Unio castaneus Lea, 1831)

Unio castaneusFitzinger (1833)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio dubius Fitzinger, 1833
Fitzinger, 1833, Syst, Verz. Österr. Weichth.: 119. [nomen nudum]

Unio dubiusFitzinger (1833), Zelebor (1851)
Unio (Lymnium) aterDrouët (1857)
Margaron (Unio) pictorumLea (1870)
Unio (sec. Lymnium) pictorumSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio nigricans Fitzinger, 1833
Fitzinger, 1833, Syst, Verz. Österr. Weichth.: 119. [nomen nudum]

Unio nigricansFitzinger (1833), Zelebor (1851)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio sinuolata Küster, 1833
Küster, 1833, Icones Moll. Test. Abthl. 2: pl. 5, fig. 5.

Unio sinuolataKüster (1833)
Unio cytherea cythereaHaas (1913)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio labacensis Rossmässler, 1835
‘Ziegler’ Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 21.
(intro'd as syn of Mya batava Maton & Rackett, 1807)

Unio labacensisRossmässler (1835), J.F. Schmidt (1840)
Unio batavusRossmässler (1835), Küster (1855), Westerlund (1890)
Margarita (Unio) batavaLea (1836)
Mysca batava var. labacensisSchlüter (1838)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio batavus var. crassusClessin (1877)
Unio amnicusDrouët (1889)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio vitreus Rossmässler, 1835
‘Stenz’ Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 21.
(intro'd as syn of Mya batava Maton & Rackett, 1807)

Unio vitreusRossmässler (1835)
Margaron (Unio) batavusLea (1870)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio amnicus Rossmässler, 1836
Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 20.
‘Ziegl.’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 31, pl. 15, fig. 212.

Unio amnicusRossmässler (1836), J.F. Schmidt (1840), C.B. Adams (1847), Küster (1854), Servain (1885), Drouët (1889), Westerlund (1890)
Unio batavusRossmässler (1835)
Margarita (Unio) batavaLea (1836)
Mysca amnicaSchlüter (1838)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Batavi) nanusDupuy (1852)
Unio (Lymnium) batavus var. L nanusMoquin-Tandon (1855)
Unio batavus var. crassusClessin (1877)
Unio (Groupe de l’U. fusculus) amnicusLocard (1882)
Unio (Amniciana) amnicusServain (1888)
Unio (Amnicusiana) amnicusLocard (1889)
Unio (sec. Hyridella) batavus vr. amnicusPaetel (1890)
Unio (Groupe de l’U. amnicus) amnicusLocard (1893)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (Groupe des Amnicusiana) amnicusCaziot (1907)
Unio consentaneus minorKobelt & Haas (1911)
Unio mancus var. amnicusGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio atrovirens Rossmässler, 1836
‘Schmidt’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 28, pl. 15, figs. 206-207.

Unio atrovirensRossmässler (1836), J.F. Schmidt (1840)
Mysca decurvata subvar. atrovirensSchlüter (1838)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio decurvatusKüster (1854)
Unio batavus var. aterClessin (1877)
Unio (s.s.) decurvatus vr. atrovirensPaetel (1890)
Unio decurvatus var. atrovirensWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio carinthiacus Rossmässler, 1836
‘Z.’ Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 21.
‘Ziegl.’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 30, pl. 15, fig. 209.
Type(s): PARATYPE BMNH_1965216, Carinthia.

Unio carinthiacusRossmässler (1836), Reeve (1865)
Unio batavusRossmässler (1835), Küster (1855), Westerlund (1890), Germain (1931)
Margarita (Unio) batavaLea (1836)
Mysca batava var. carynthiacaSchlüter (1838)
Unio carynthiacusJ.F. Schmidt (1840), C.B. Adams (1847), Schröder (1885)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio batavus var. crassusClessin (1877)
Unio (Bataviana) carynthiacusServain (1888)
Unio (Batavusiana) carynthiacusLocard (1889), Germain (1904)
Unio (Groupe de l’U. batavus) carinthiacusLocard (1893)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio carynthiacus Lea, 1836
‘Zeigler’ of Authors.
Lea, 1836, Synopsis Fam. Naiades: 27.
Schlüter, 1838, Kurzgef. Syst. Verz. Conch. Samml.: 33.
J.F. Schmidt, 1840, Bull. Soc. imp. Nat. Moscou 12: 435.
C.B. Adams, 1847, Cat. Gen. Sp. Adams: 14.
Lea, 1852, Synopsis Fam. Naiades: 30.
Lea, 1870, Synopsis Fam. Naiades: 47.
Schröder, 1885, Bull. Soc. Malac. France 2: 229.
Servain, 1888, Bull. Soc. Malac. France 5: 317.
Locard, 1889, Contr. Faune Malacol. Franc. 13: 141 [35].
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 264.
Germain, 1931, Faune de France 22: 728.
(error for Unio carinthiacus Rossmässler, 1836)

Unio carynthiacusLea (1836)

Unio consentaneus Rossmässler, 1836
‘Ziegl.’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 29, pl. 15, fig. 208.
‘Ziegl.’ Rossmässler, 1838, Icon. Land- und Süssw.-Moll. 2 (1-2): 42, pl. 40, fig. 544.
Rossmässler, 1842, Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, fig. 742.

Unio consentaneusRossmässler (1836), Rossmässler (1838), J.F. Schmidt (1840), Rossmässler (1842), Zelebor (1851), Kobelt (1910), Germain (1931)
Margarita (Unio) batavaLea (1836)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Potamida) crassusMörch (1853)
Unio aterKüster (1854), Westerlund (1890)
Unio (Lymnium) aterMoquin-Tandon (1855), Drouët (1857)
Unio batavus var. aterClessin (1877)
Unio ater vr. consentaneusPaetel (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio consentaneus var.Kobelt & Haas (1911)
Unio crassus consentaneusOrtmann (1912)
Unio cytherea cythereaHaas (1913)
Unio (s.s.) crassus consentancusZhadin (1938)
Unio crassus cythereaHaas (1940), Haas (1969)
Batavusiana (s.s.) nanaZatravkin (1987)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio fuscus Lea, 1836
‘Zieg.’ Lea, 1836, Synopsis Fam. Naiades: 27.
(intro'd as syn of Mya batava Maton & Rackett, 1807)

Unio fuscusLea (1836)
Margarita (Unio) batavaLea (1836)
Margaron (Unio) batavusLea (1852), Lea (1870)

Unio gibba Lea, 1836
‘Mühl. Pfeif.’ Lea, 1836, Synopsis Fam. Naiades: 27.
(intro'd as syn of Mya batava Maton & Rackett, 1807)

Unio gibbaLea (1836)
Margarita (Unio) batavaLea (1836)
Margaron (Unio) batavusLea (1852), Lea (1870)

Unio piscinalis Rossmässler, 1836
‘Z.’ Rossmässler, 1835, Icon. Land- und Süssw.-Moll. 1 (2): 21.
‘Ziegl.’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 30, pl. 15, fig. 210.

Unio piscinalisRossmässler (1836)
Unio batavusRossmässler (1835)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio batavus var. crassusClessin (1877)
Unio (Groupe de l’U. fusculus) piscinalisLocard (1882), Locard (1893)
Unio (Fusculusiana) piscinalisLocard (1889)
Unio batavus var. piscinalisWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus var. piscinalisGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio reniformis Rossmässler, 1836
‘Schmidt’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): 31, pl. 15, fig. 213.

Unio reniformisRossmässler (1836), J.F. Schmidt (1840), Küster (1854), Sowerby (1868), Westerlund (1890)
Margarita (Unio) batavaLea (1836)
Mysca reniformisSchlüter (1838)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Potamida) reniformisMörch (1853)
Unio (Lymnium) batavus var. N reniformisMoquin-Tandon (1855)
Unio batavus var. aterClessin (1877)
Unio (Groupe de l’U. fusculus) reniformisLocard (1882), Locard (1893)
Unio (Fusculusiana) reniformisLocard (1889)
Unio ater vr. reniformisPaetel (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus var. piscinalisGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio retusa Held, 1836
Held, 1836, Isis (Oken) 1836: 281.
(homonym of Unio retusa Lamarck, 1819)

Unio retusaHeld (1836)
Margaron (Unio) pictorumLea (1852), Lea (1870)
Unio pictorumDrouët (1889)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio batavus var. elongatus Held, 1836
Held, 1836, Isis (Oken) 1836: 306.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio elongata Lamarck, 1819)

Unio batavus var. elongatusHeld (1836)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio batavus var. gibbosus Held, 1836
Held, 1836, Isis (Oken) 1836: 306.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio gibbosus Barnes, 1823)

Unio batavus var. gibbosusHeld (1836)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio acutus Rossmässler, 1837
Rossmässler, 1837, Icon. Land- und Süssw.-Moll. 1 (5-6): 56, pl 29., fig. 413 [as ‘Unio an n. sp.?’]. [nomen nudum]

Unio acutusRossmässler (1837)
Unio batavus var. crassusClessin (1877)
Unio (sec. Hyridella) crassusPaetel (1890)
Unio crassus var. acutusWesterlund (1890)

Unio batavus var. squamosus Charpentier, 1837
Charpentier, 1837, Cat. Moll. Suisse: 25, pl. 2, fig. 22.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. squamosusCharpentier (1837)
Unio (Lymnium) batavus var. H squamosusMoquin-Tandon (1855)
Unio squamosusDrouët (1881), Drouët (1889), Westerlund (1890)
Unio (sec. Hyridella) batavus vr. squamosusPaetel (1890)
Unio consentaneus squamosusKobelt (1910), Kobelt & Haas (1911)
Unio consentaneusGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Mysca batava var. fuscula subvar. pallipes Schlüter, 1838
‘Ziegl.’ Schlüter, 1838, Kurzgef. Syst. Verz. Conch. Samml.: 33. [infra-subsp.]
(intro'd as intra-sp. of Unio fusculus Rossmässler, 1836)

Mysca batava var. fuscula subvar. pallipesSchlüter (1838)

Mysca reniformis subvar. kokeilli Schlüter, 1838
Schlüter, 1838, Kurzgef. Syst. Verz. Conch. Samml.: 32. [infra-subsp.]
(intro'd as intra-sp. of Unio reniformis Rossmässler, 1836)

Mysca reniformis subvar. kokeilliSchlüter (1838)

Unio gargottae Rossmässler, 1838
Rossmässler, 1838, Icon. Land- und Süssw.-Moll. 2 (1-2): 26, pl. 35, fig. 493.
(misidentified reference to Unio gargottae Philippi, 1836)

Unio gargottaeRossmässler (1838)
Unio gargottæBourguignat (1883)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio consentaneus legitimus Rossmässler, 1838
Rossmässler, 1838, Icon. Land- und Süssw.-Moll. 2 (1-2): 25, pl. 35, fig. 491a. [infra-subsp.]
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus legitimusRossmässler (1838)
Unio consentaneus form legitimusRossmässler (1838)
Unio crassus cythereaHaas (1969)

Unio consentaneus minor Rossmässler, 1838
Rossmässler, 1838, Icon. Land- und Süssw.-Moll. 2 (1-2): 25, pl. 35, fig. 491c. [infra-subsp.]
(homonym of Unio margaritifer var. minor Rossmässler, 1835; intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus minorRossmässler (1838), Kobelt & Haas (1911)
Unio consentaneus form minorRossmässler (1838)

Unio consentaneus pulcher Rossmässler, 1838
Rossmässler, 1838, Icon. Land- und Süssw.-Moll. 2 (1-2): 25, pl. 35, fig. 491b. [infra-subsp.]
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836; homonym of Unio pulcher Lea, 1838)

Unio consentaneus pulcherRossmässler (1838)
Unio consentaneus form pulcherRossmässler (1838)

Unio corrugata Mauduyt, 1839
Mauduyt, 1839, Tableau Indic. Moll. Vienne: 8, pl. 1, fig. 1.

Unio corrugataMauduyt (1839)
Unio (Batavi) moulinsianusDupuy (1852)
Unio (Lymnium) batavusMoquin-Tandon (1855)
Unio corrugatusWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio gangrenosus J.F. Schmidt, 1840
‘Ziegler’ J.F. Schmidt, 1840, Bull. Soc. imp. Nat. Moscou 12: 436.
J.F. Schmidt, 1847, Conch. Krain: 26.

Unio gangrenosusJ.F. Schmidt (1840), C.B. Adams (1847)
Unio gangraenosusKüster (1855)
Unio (Mancusiana) gangrenosusLocard (1889)
Unio gangrænosusWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio pruinosus J.F. Schmidt, 1840
J.F. Schmidt, 1840, Bull. Soc. imp. Nat. Moscou 12: 445, pl. 9, fig. 3.

Unio pruinosusJ.F. Schmidt (1840), Drouët (1881), Drouët (1889), Westerlund (1890)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (Groupe de l’U. fusculus) fusculusLocard (1882)
Unio (Fusculusiana) pruinosusLocard (1889)
Unio (Groupe de l’U. fusculus) pruinosusLocard (1893)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus var. piscinalisGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio crassissimus Hanley, 1843
Schlüter, 1838, Kurzgef. Syst. Verz. Conch. Samml.: 33 [as ‘Mysca tumida var. crassissima’]. [nomen nudum]
‘Fer.’ Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 209.

Unio crassissimusHanley (1843)
Mysca tumida var. crassissimaSchlüter (1838)
Margaron (Unio) crassusLea (1870)
Margaritana crassaSimpson (1900), Simpson (1914)

Unio manca Millet, 1843
‘Lamarck’ of Authors.
Millet, 1843, Mag. Zool.: 4, pl. 64, fig. 2.
(misidentified reference to Unio manca Lamarck, 1819)

Unio mancaMillet (1843)
Unio (Mancusiana) mancusLocard (1889), Germain (1904)
Unio pruinosusDrouët (1889)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio mancusGermain (1931)

Unio requieni Rossmässler, 1844
‘Mich.’ Rossmässler, 1844, Icon. Land- und Süssw.-Moll. 2 (6): 29, pl. 57, fig. 757-761.
(misidentified reference to Unio requienii Michaud, 1831)

Unio requieniRossmässler (1844)
Unio requieniiKüster (1855)
Margaron (Unio) pictorumLea (1870)
Unio subtilisDrouët (1889)
Unio meretricisWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900)
Unio (sec. Lymnium) batavus var. requieniSimpson (1914)

Unio batavus var. pusillus Rossmässler, 1844
Rossmässler, 1844, Icon. Land- und Süssw.-Moll. 2 (6): .
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio pusillus Lea, 1840)

Unio batavus var. pusillusRossmässler (1844)
Unio (Lymnium) batavus var. L nanusMoquin-Tandon (1855)
Unio batavus var. crassusClessin (1877)
Unio amnicusWesterlund (1890)

Unio glaucinus Stabile, 1845
Stabile, 1845, Faun. Lug.: f. 75.
(misidentified reference to Unio glaucinus Porro, 1838)

Unio glaucinusStabile (1845)
Unio (Limnium) requienii var. vulgarisStabile (1859)
Unio potamiusBourguignat (1883)
Unio batavus var. potamiusWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900)

Unio piscinalis J.F. Schmidt, 1847
J.F. Schmidt, 1847, Conch. Krain: 27.
(reference to Unio piscinalis Rossmässler, 1836)

Unio piscinalisJ.F. Schmidt (1847)
Unio reniformisKüster (1854)

Unio retzii C.B. Adams, 1847
‘Küst.’ C.B. Adams, 1847, Cat. Gen. Sp. Adams: 14. [nomen nudum]

Unio retziiC.B. Adams (1847)
Margaron (Unio) batavusLea (1852), Lea (1870)

Unio drouetii Dupuy, 1849
Dupuy, 1849, Cat. Extramar. Galliae Test.: no. 326.
Dupuy, 1852, Hist. Natur. Moll. France (6): 639, pl. 24, fig. 12.

Unio drouetiiDupuy (1849)
Unio (Batavi) drouetiiDupuy (1852)
Unio (Lymnium) batavus var. I drouëtiiMoquin-Tandon (1855)
Unio (Groupe de l’U. Batavus) drouetiLocard (1882)
Unio (Batavusiana) drouetiLocard (1889)
Unio (sec. Hyridella) batavus vr. drouëtiPaetel (1890)
Unio batavus var. drouëtiWesterlund (1890)
Unio (Groupe de l’U. batavus) drouetiLocard (1893)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969), Fauna Europaea (2012)

Unio moquinianus Sandberger & Koch, 1851
Sandberger & Koch, 1851, Jb. Nassau. Ver. Naturk. 7: 245.
(misidentified reference to Unio moquinianus Dupuy, 1843)

Unio moquinianusSandberger & Koch (1851)
Unio kochiKobelt (1886)

Unio argens Lea, 1852
‘Küst.’ Lea, 1852, Synopsis Fam. Naiades: 30.
(intro'd as syn of Mya batava Maton & Rackett, 1807)

Unio argensLea (1852)
Margaron (Unio) batavusLea (1852), Lea (1870)

Unio drouatii Lea, 1852
‘Dup.’ Lea, 1852, Synopsis Fam. Naiades: 39.
(error for Unio drouetii Dupuy, 1849)

Unio drouatiiLea (1852)

Unio kurrii Lea, 1852
‘Küst.’ Lea, 1852, Synopsis Fam. Naiades: 30.
(intro'd as syn of Mya batava Maton & Rackett, 1807)

Unio kurriiLea (1852)
Margaron (Unio) batavusLea (1852), Lea (1870)

Unio moquinianus Drouët, 1852
Drouët, 1852, Etudes Nayades de la France: pl. 6, fig. 3.
(misidentified reference to Unio moquinianus Dupuy, 1843)

Unio moquinianusDrouët (1852)
Unio (Ateriana) lambotteiLocard (1889)
Unio consentaneusGermain (1931)

Unio nanus Dupuy, 1852
‘Lamarck’ Dupuy, 1852, Hist. Natur. Moll. France (6): pl. 25, fig. 16.
(reference to Unio nana Lamarck, 1819)

Unio nanusDupuy (1852), Kobelt (1879)
Unio (sec. Lymnium) batavusSimpson (1900)
Unio (Rhomboïdiana) nanaGermain (1904)
Unio nanaKobelt & Haas (1911)
Unio (sec. Lymnium) batavus var. requieniSimpson (1914)
Unio mancus var. nanusGermain (1931)

Unio ovalis Dupuy, 1852
Dupuy, 1852, Hist. Natur. Moll. France (6): pl. 25, fig. 13.
(misidentified reference to Mya ovalis Montagu, 1803)

Unio ovalisDupuy (1852)
Unio (Lymnium) batavus var. ovalisDrouët (1857)
Unio (Batavusiana) besnardianusLocard (1889)
Unio besnardianusWesterlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio (Batavusiana) besnardiGermain (1904)
Unio batavusGermain (1931)

Unio pescinalis Lea, 1852
‘Zieg.’ Lea, 1852, Synopsis Fam. Naiades: 30.
(error for Unio piscinalis Rossmässler, 1836)

Unio pescinalisLea (1852)

Unio ventricosus Scholtz, 1853
Scholtz, 1853, unknown publication: .
(homonym of Unio ventricosus Barnes, 1823)

Unio ventricosusScholtz (1853)
Unio batavus var. ventricosusWesterlund (1890)

Unio brevirostris Küster, 1854
Küster, 1854, Conchyl. Cab. 9(2): 120, pl. 33, figs. 1-3.

Unio brevirostrisKüster (1854), Westerlund (1890), Paetel (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus carneusHaas (1940), Haas (1969), Fauna Europaea (2012)

Unio crassus Küster, 1854
‘Retz.’ Küster, 1854, Conchyl. Cab. 9(2): 113, pl. 31, fig. 5. [in part]
(reference to Unio crassus Retzius, 1788)

Unio crassusKüster (1854), Drouët (1881)
Unio batavus var. crassusClessin (1877)
Lampsilis (sec. Eurynia) radiatusSimpson (1900)
Lampsilis (Eurynia) radiataSimpson (1914)

Unio heldii Küster, 1854
Küster, 1854, Conchyl. Cab. 9(2): 111, pl. 30, fig. 5-7.

Unio heldiiKüster (1854), Drouët (1881), Drouët (1881), Westerlund (1890), Kobelt & Haas (1911)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio luxurians Küster, 1854
Küster, 1854, Conchyl. Cab. 9(2): 119, pl. 32, fig. 5.

Unio luxuriansKüster (1854), Westerlund (1890)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)
Unio crassus carneusHaas (1940), Haas (1969)

Unio nessorhynchus Küster, 1854
Küster, 1854, Conchyl. Cab. 9(2): 116, pl. 31, fig. 6.

Unio nessorhynchusKüster (1854)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio aterKüster (1854)
Unio ater var. nessorhynchusWesterlund (1890)
Unio cytherea nessorhynchusHaas (1913)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio ater Moquin-Tandon, 1855
‘Nilss.’ Moquin-Tandon, 1855, Hist. Natur. Moll. France 2: 570.
(reference to Unio ater Nilsson, 1822)

Unio aterMoquin-Tandon (1855)
Unio (Melasiana) melasLocard (1889)

Unio capigliolo Küster, 1855
‘Payraudeau’ of Authors.
Küster, 1855, Conchyl. Cab. 9(2): 125, pl. 34, figs. 5-6. [in part]
Sowerby, 1868, Conch. Icon. 16: pl. 75, sp. 392.
(misidentified reference to Unio capigliolo Payraudeau, 1826)

Unio capiglioloKüster (1855)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio gangraenosus Küster, 1855
‘Ziegler’ of Authors.
Küster, 1855, Conchyl. Cab. 9(2): 124.
Westerlund, 1890, Fauna Paläarct. Binnenconch. 2(7): 81.
Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 130.
Haas, 1969, Das Tierreich 88: 46.
(error for Unio gangrenosus J.F. Schmidt, 1840)

Unio gangraenosusKüster (1855)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio rivularis Moquin-Tandon, 1855
Rossmässler, 1844, Icon. Land- und Süssw.-Moll. 2 (6): fig. 414.
Moquin-Tandon, 1855, Hist. Natur. Moll. France 2: 571.
(homonym of Unio rivularis Conrad, 1853)

Unio rivularisMoquin-Tandon (1855)
Unio (Lymnium) batavus var. B rivularisMoquin-Tandon (1855)
Unio (sec. Hyridella) batavus vr. rivularisPaetel (1890)
Unio batavusWesterlund (1890)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio batavus var. sarratinus Moquin-Tandon, 1855
‘St. Germain, in litt.’ Moquin-Tandon, 1855, Hist. Natur. Moll. France 2: 571.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. sarratinusMoquin-Tandon (1855), de Joannis (1859), Westerlund (1890)
Unio (Lymnium) batavus var. G sarratinusMoquin-Tandon (1855)
Unio (sec. Hyridella) batavus vr. sarratianusPaetel (1890)

Unio ater Drouët, 1857
‘Nilss.’ Drouët, 1857, Étud. Naïades. France, Unio: 72, pl. 4, fig. 1.
(reference to Unio ater Nilsson, 1822)

Unio aterDrouët (1857)
Unio (Ateriana) ignariLocard (1889)
Unio ignariWesterlund (1890)
Unio consentaneusGermain (1931)

Unio nanus Drouët, 1857
‘Lam.’ Drouët, 1857, Étud. Naïades. France, Unio: pl. 5, fig. 2.
(reference to Unio nana Lamarck, 1819)

Unio nanusDrouët (1857)
Unio (Nanusiana) nanusLocard (1889)
Unio (Rhomboïdiana) nanaGermain (1904)
Unio nanaKobelt & Haas (1911)
Unio mancus var. nanusGermain (1931)

Unio platyrhynchoideus Drouët, 1857
‘Dup.’ Drouët, 1857, Étud. Naïades. France, Unio: 100, pl. 9, fig. 1.
(misidentified reference to Unio platyrinchoideus Dupuy, 1849)

Unio platyrhynchoideusDrouët (1857)
Unio (Ateriana) ignariformisLocard (1889)
Unio ignariformisWesterlund (1890)

Unio batavus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: pl. 9, fig. 2. [in part]
(reference to Mya batava Maton & Rackett, 1807)

Unio batavusde Joannis (1859)
Unio (Batavusiana) batavus radiataGermain (1904)

Unio batavus var. acutus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 287, pl. 10, fig. 1.
(homonym of Unio acutus Rossmässler, 1837)

Unio batavus var. acutusde Joannis (1859)

Unio batavus var. baraceus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 285, pl. 9, fig. 7.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. baraceusde Joannis (1859), Germain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus var. courtilieri de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: pl. 9, fig. 3.
(reference to Unio courtillieri Hattemann, 1859; error for Unio courtillieri Hattemann, 1859)

Unio batavus var. courtilieride Joannis (1859)
Unio (Batavusiana) batavus courtilieriGermain (1904)
Unio batavusGermain (1931)

Unio batavus var. longus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 288, pl. 10, fig. 3.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio longus Philippi, 1869)

Unio batavus var. longusde Joannis (1859)
Unio batavusGermain (1931)

Unio batavus var. minimus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 289, pl. 9, fig. 6.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio requienii var. minima Drouët, 1857)

Unio batavus var. minimusde Joannis (1859)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus var. nanus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: pl. 9, fig. 8. [in part]
(reference to Unio nana Lamarck, 1819)

Unio batavus var. nanusde Joannis (1859)
Unio (Melasiana) melasGermain (1904)
Unio mancus var. amnicusGermain (1931)

Unio batavus var. nanus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: pl. 9, fig. 10. [in part]
(reference to Unio nana Lamarck, 1819)

Unio batavus var. nanusde Joannis (1859)
Unio (Rhomboïdiana) nanaGermain (1904)

Unio batavus var. ovalis de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: pl. 10, fig. 2.
(misidentified reference to Mya ovalis Montagu, 1803)

Unio batavus var. ovalisde Joannis (1859)
Unio (Batavusiana) ligericusLocard (1889), Germain (1904)
Unio batavusGermain (1931)

Unio batavus var. senotius de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 288, pl. 10, fig. 4.

Unio batavus var. senotiusde Joannis (1859)

Unio orientalis Küster, 1862
‘Parreis in sched.’ Küster, 1862, Conchyl. Cab. 9(2): 267.
(intro'd as syn of Unio kotschyi Küster, 1862)

Unio orientalisKüster (1862)
Unio kotschyiKüster (1862)

Unio sanderi Bourguignat, 1862
Bourguignat, 1862, Malacol. Lac Quatre-Cantons: 55.
Bourguignat, 1864, Malac. Aix-les-Baines: 76.

Unio sanderiBourguignat (1862)
Unio sandriopsisServain (1885), Westerlund (1890)
Unio (Sandriana) sandriopsisLocard (1889)
Unio (Groupe de l’U. macrorhynchus) sandriopsisLocard (1893)
Unio mancus var. macrorhynchusGermain (1931)

Unio ater Bourguignat, 1864
Bourguignat, 1864, Malac. Aix-les-Baines: 73.
(reference to Unio ater Nilsson, 1822)

Unio aterBourguignat (1864)
Unio (Groupe de l’U. sandrii) macrorhynchusLocard (1882)
Unio (Sandriana) macrorhynchusLocard (1889)
Unio macrorhynchusWesterlund (1890)
Unio mancus var. macrorhynchusGermain (1931)

Unio merdiger Reeve, 1865
Jay, 1839, Cat. Rec. Shells: 25, sp. 1065.
‘Walsh.’ Lea, 1852, Synopsis Fam. Naiades: . [nomen nudum]
‘Watts’ Reeve, 1865, Conch. Icon. 16: pl. 28, sp. 145.

Unio merdigerReeve (1865)
Margaron (Unio) batavusLea (1852), Lea (1870)
Unio (sec. Lymnium) batavusSimpson (1900), Simpson (1914)

Unio lambottei Malzine, 1867
Malzine, 1867, Essai faun. malac. Belg.: 32, pl. 2, figs, 3-4.

Unio lambotteiMalzine (1867), Colbeau (1868), Westerlund (1890)
Unio (Groupe de l’U. crassus) lambotteiLocard (1882)
Unio (Ateriana) lambotteiLocard (1889), Germain (1904)
Unio berilloniWesterlund (1890)
Unio (Groupe de l’U. ater) lambolteiLocard (1893)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio ryckholtii Malzine, 1867
Malzine, 1867, Essai faun. malac. Belg.: 32, pl. 2, figs. 1-2.

Unio ryckholtiiMalzine (1867), Colbeau (1868)
Unio (Groupe de l’U. Batavus) ryckholtiLocard (1882)
Unio (Ellipsopsisiana) ryckholtiiLocard (1889)
Unio batavus var. ryckholtiiWesterlund (1890)
Unio (Groupe de l’U. batavus) ryckholtiLocard (1893)
Unio (Batavusiana) ryckholtiiGermain (1904)
Unio batavusGermain (1931)

Unio batavus var. squamosus Brot, 1867
Brot, 1867, Assoc. Zool. Léman Ann. (1866): pl. 9, fig. 1.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; reference to Unio batavus var. squamosus Charpentier, 1837)

Unio batavus var. squamosusBrot (1867)
Unio sandriopsisServain (1885), Westerlund (1890)
Unio (Ateriana) aterLocard (1889)
Unio consentaneusGermain (1931)

Unio ryckholti var. cuneata Malzine, 1867
Malzine, 1867, Essai faun. malac. Belg.: 32.
(homonym of Unio cuneatus Jacquemin, 1835; intro'd as intra-sp. of Unio ryckholtii Malzine, 1867)

Unio ryckholti var. cuneataMalzine (1867)
Unio ryckholtii var. cuneatusColbeau (1868)
Unio batavusGermain (1931)

Unio (tumidus) elegans Westerlund, 1867
Westerlund, 1867, Malak. Blatt. 14: 202, 206.
(homonym of Unio elegans Lea, 1831)

Unio (tumidus) elegansWesterlund (1867)
Unio ater var. elegansWesterlund (1890)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio batavus var. belgicus Colbeau, 1868
Colbeau, 1868, Ann. Soc. Malac. Belgique 3: 106, pl. 4, fig. 3.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. belgicusColbeau (1868)
Unio (Groupe de l’U. crassus) incurvatusLocard (1882)
Unio (sec. Hyridella) batavus vr. belgicusPaetel (1890)
Unio batavus var. incurvatusWesterlund (1890)

Unio batavus var. fontainei Colbeau, 1868
‘Lecomte’ Colbeau, 1868, Ann. Soc. Malac. Belgique 3: 106. [nomen nudum]
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. fontaineiColbeau (1868)
Unio (sec. Hyridella) batavus vr. fontaineiPaetel (1890)

Unio labacencis Lea, 1870
‘Pfeif. Mühl.’ Lea, 1870, Synopsis Fam. Naiades: 47.
(error for Unio labacensis Rossmässler, 1835)

Unio labacencisLea (1870)

Unio maceerthyanus Lea, 1870
‘Bourg.’ Lea, 1870, Synopsis Fam. Naiades: 48.
(error for Unio maccarthyanus Bourguignat, 1866; misidentified reference to Unio maccarthyanus Bourguignat, 1866)

Unio maceerthyanusLea (1870)

Unio crassus var. maximus Kobelt, 1872
Kobelt, 1872, Malak. Blatt. 19: 142, pl. 5.
Kobelt, 1884, Icon. Land- und Süssw.-Moll. 1: 67, pl. 29, figs. 218-219.
(intro'd as intra-sp. of Unio crassus Retzius, 1788; homonym of Unio pictorum maxima Mörch, 1863)

Unio crassus var. maximusKobelt (1872), Kobelt (1884)
Unio batavus var. pseudo-litoralisClessin (1877)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio batavus Miller, 1873
Miller, 1873, Schalth. Bodensees: pl. 2, fig. 8.
(reference to Mya batava Maton & Rackett, 1807)

Unio batavusMiller (1873)
Unio (Socardiana) subrobustusLocard (1889)
Unio crassusGermain (1931)

Unio bosnensis Möllendorff, 1874
Möllendorff, 1874, Beitr. Fauna Bosniens: 62, text figs. 21-22.
(renamed Unio bosnicus Locard, 1889)

Unio bosnensisMöllendorff (1874), Kobelt (1879)
Unio (Fusculusiana) bosnicusLocard (1889)
Unio (sec. Hyridella) bosnensisPaetel (1890)
Unio bosnicusWesterlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio pseudolitoralis Clessin, 1877
Clessin, 1875, Verh. Ver. Naturgesch. Hamburg 2: 258 [as ‘pseudo-litoralis’]. [nomen nudum]
Clessin, 1877, Deutsche Excurs. Moll. Fauna: 469, text fig. 305 [as ‘pseudo-litoralis’].

Unio pseudolitoralisClessin (1877), Westerlund (1890)
Unio batavus var. pseudo-litoralisClessin (1877)
Unio crassus var. maximusKobelt (1884)
Unio (s.s.) crassus var. pseudolitoralisZhadin (1938)
Unio crassus crassusHaas (1940), Haas (1969)
Unio crassus var. pseudolitoralisZhadin (1965)
Batavusiana (Crassunio) crassaStadnichenko (1984), Zatravkin (1987)
Crassiana crassa crassaKantor & Sysoev (2005), Kantor et al. (2010)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio phaseolus Kobelt, 1879
‘Held’ Kobelt, 1879, Icon. Land- und Süssw.-Moll. 6: 44, pl. 163, fig. 1649.
(homonym of Unio phaseolus Hildreth, 1828)

Unio phaseolusKobelt (1879)
Unio heldiiKüster (1854), Drouët (1881), Westerlund (1890), Kobelt & Haas (1911)
Unio batavus var. crassusClessin (1877)
Unio (sec. Hyridella) batavus vr. phaseolusPaetel (1890)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio subtilis Drouët, 1879
Drouët, 1879, J. de Conch. 27: 142.

Unio subtilisDrouët (1879), Kobelt (1886), Drouët (1889), Westerlund (1890)
Unio (Groupe de l’U. Brevierei) subtilisLocard (1882)
Unio (Mancusiana) subtilisLocard (1889)
Unio (Groupe de l’U. mancus) subtilisLocard (1893)
Unio (Groupe des Mancusiana) subtilisCaziot (1907)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio vescoi var. conemenosi Westerlund & Blanc, 1879
Blanc in Westerlund & Blanc, 1879, Aperçu Faune Malac. Grèce: 145.
(intro'd as intra-sp. of Unio vescoi Bourguignat, 1856)

Unio vescoi var. conemenosiWesterlund & Blanc (1879), Westerlund (1890)

Unio moquinianus Brevière, 1880
Brevière, 1880, Cat. moll. Nièvre: 26.
(misidentified reference to Unio moquinianus Dupuy, 1843)

Unio moquinianusBrevière (1880)
Unio (Groupe de l’U. Brevierei) breviereiLocard (1882)
Unio (Ateriana) breviereiLocard (1889)
Unio consentaneusGermain (1931)

Unio requieni Brevière, 1880
‘Mich.’ Brevière, 1880, Cat. moll. Nièvre: 26.
(misidentified reference to Unio requienii Michaud, 1831)

Unio requieniBrevière (1880)
Unio (Groupe de l’U. Brevierei) breviereiLocard (1882)
Unio (Ateriana) breviereiLocard (1889)
Unio consentaneusGermain (1931)

Unio croaticus Drouët, 1881
Drouët, 1881, J. de Conch. 29: 245.

Unio croaticusDrouët (1881), Kobelt (1886), Westerlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio diagonalis Drouët, 1881
‘Held’ Drouët, 1881, J. de Conch. 29: 27.
(intro'd as syn of Unio batavus var. squamosus Charpentier, 1837)

Unio diagonalisDrouët (1881)
Unio squamosusDrouët (1881), Drouët (1889)

Unio neocomensis Drouët, 1881
Drouët, 1881, J. de Conch. 29: 247.

Unio neocomensisDrouët (1881), Westerlund (1890)
Unio neocomiensisKobelt (1886)
Unio (Sandriana) necomensisLocard (1889)
Unio (Groupe de l’U. macrorhynchus) necomensisLocard (1893)
Unio mancus var. macrorhynchusGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio andegavensis Locard, 1882
‘Servain’ Locard, 1882, Prodr. Malac. Franç. 1: 289, 359.
‘Servain’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 142 [36].
‘Servain’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 167.
Type(s): POSSIBLE SYNTYPE MNHN_22100, La Maine à Angers.

Unio andegavensisLocard (1882)
Unio (Groupe de l’U. Batavus) andegavensisLocard (1882)
Unio (Bataviana) andegavensisServain (1888)
Unio (Batavusiana) andegavensisLocard (1889), Germain (1904)
Unio batavus var. andegavensisWesterlund (1890)
Unio (Groupe de l’U. batavus) andegavensisLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio arenarum Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 289, 358.
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 144 [38].
Bourguignat in Locard, 1893, Coqu. Eau Douce Saumâtre France: 171.
Type(s): IDIOTYPE MNHN_22110, Basse Indre (Loire-Inf.).

Unio arenarumLocard (1882)
Unio (Groupe de l’U. Batavus) arenarumLocard (1882)
Unio (Bataviana) arenarumServain (1888)
Unio (Batavusiana) arenarumLocard (1889), Germain (1904)
Unio batavus var. arenarumWesterlund (1890)
Unio (Groupe de l’U. batavus) arenarumLocard (1893)
Unio batavus var. baraceusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio brevierei Locard, 1882
‘Bourguignat’ Locard, 1882, Prodr. Malac. Franç. 1: 286 [as ‘brevieri’], 356.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 148 [42].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 178.
(correct name for Unio brevieri Locard, 1882)
Type(s): LECTOTYPE MNHN_22145, La Canne, à Goulnot.

Unio breviereiLocard (1882), Westerlund (1890)
Unio (Groupe de l’U. Brevierei) breviereiLocard (1882)
Unio (Ateriana) breviereiLocard (1889)
Unio (Groupe de l’U. ater) breviereiLocard (1893)
Unio (Ateriana) brevieriGermain (1904)
Unio (Groupe des Ateriana) breviereiCaziot (1907)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio brevieri Locard, 1882
‘Bourguignat in Locard’ of Authors.
Locard, 1882, Prodr. Malac. Franç. 1: 286.
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 265.
Germain, 1931, Faune de France 22: 732.
Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 130.
Haas, 1969, Das Tierreich 88: 49.
(incorrect original spelling of Unio brevierei Locard, 1882)

Unio brevieriLocard (1882)

Unio carantoni Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 295, 364.
‘Coutagne’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 129 [23].
‘Coutagne’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 157.
Type(s): IDIOTYPE MNHN_22162, [illegible] (Charente).

Unio carantoniLocard (1882), Westerlund (1890), Rochebrune (1903)
Unio (Groupe de l’U. falsus) carantoniLocard (1882)
Unio (Mancusiana) carantoniLocard (1889)
Unio (Groupe de l’U. mancus) carantoniLocard (1893)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio crassatellus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 286, 356.
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 136 [30].
Bourguignat in Locard, 1893, Coqu. Eau Douce Saumâtre France: 162.
Type(s): LECTOTYPE MNHN_22182, La Canne, à Jailly (Nièvre).

Unio crassatellusLocard (1882), Rochebrune (1903)
Unio (Groupe de l’U. crassus) crassatellusLocard (1882)
Unio (Crassiana) crassatellusLocard (1889)
Unio (Groupe de l’U. feliciani) crassatellusLocard (1893)
Unio crassusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio danemorae Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 284, 354 [as ‘danemoræ’].
‘Mörch’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 147 [41] [as ‘danemoræ’].
‘Mörch’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 177 [as ‘danemoræ’].
Type(s): IDIOTYPE MNHN_22186, lac d’Ondres (Baase-Pyrénées).

Unio danemoraeLocard (1882)
Unio (Groupe de l’U. ater) danemoræLocard (1882), Locard (1893)
Unio (Ateriana) danemoræLocard (1889)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio dubisanus Locard, 1882
‘Coutagne’ Locard, 1882, Prodr. Malac. Franç. 1: 291.
(incorrect original spelling of Unio dubisianus Locard, 1882)

Unio dubisanusLocard (1882)

Unio dubisianus Locard, 1882
‘Coutagne’ Locard, 1882, Prodr. Malac. Franç. 1: 291 [as ‘dubisanus’], 360.
‘Coutagne’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 129 [23].
‘Coutagne’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 158.
(correct name for Unio dubisanus Locard, 1882)
Type(s): SYNTYPE MNHN_22198, La Clange (Jura).

Unio dubisianusLocard (1882), Drouët (1889), Westerlund (1890)
Unio (Groupe de l’U. mancus) dubisanusLocard (1882)
Unio (Mancusiana) dubisianusLocard (1889)
Unio (Groupe de l’U. mancus) dubisianusLocard (1893)
Unio (Groupe des Mancusiana) dubisianusCaziot (1907)
Unio mancusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)
Unio mancus mancusPrie (2012)

Unio dubisiopsis Locard, 1882
Locard, 1882, Prodr. Malac. Franç. 1: 291 [as ‘dubisopsis’], 360.
Locard, 1889, Contr. Faune Malacol. Franc. 13: 128 [22] [as ‘dubisianopsis’].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 155 [as ‘dubisianopsis’].
(correct name for Unio dubisianopsis Locard, 1889)

Unio dubisiopsisLocard (1882)
Unio (Groupe de l’U. mancus) dubisiopsisLocard (1882)
Unio (Melasiana) dubisianopsisLocard (1889)
Unio dubisianus var. dubisianopsisWesterlund (1890)
Unio (Groupe de l’U. melas) dubisianopsisLocard (1893)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio dubisopsis Locard, 1882
Locard, 1882, Prodr. Malac. Franç. 1: 291.
(incorrect original spelling of Unio dubisiopsis Locard, 1882)

Unio dubisopsisLocard (1882)

Unio feliciani Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 285, 355.
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 134 [28].
Bourguignat in Locard, 1893, Coqu. Eau Douce Saumâtre France: 161, fig. 175.
Bourguignat in Locard, 1899, Conchyliol. Portug.: 217.
Type(s): POSSIBLE SYNTYPE MNHN_22215, La Moselle.

Unio felicianiLocard (1882)
Unio (Crassiana) felicianiServain (1882)
Unio (Groupe de l’U. crassus) felicianiLocard (1882)
Unio (Socardiana) felicianiLocard (1889), Germain (1904)
Unio (Groupe de l’U. feliciani) felicianiLocard (1893)
Unio (groupe de l’U. feliciani) felicianiLocard (1899)
Unio batavus var. baraceusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio ligericus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 289, 358.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 142 [36].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 169.
Type(s): IDIOTYPE MNHN_22310, La Loire à Ingrandes.

Unio ligericusLocard (1882)
Unio (Groupe de l’U. Batavus) ligericusLocard (1882)
Unio (Bataviana) ligericusServain (1888)
Unio (Batavusiana) ligericusLocard (1889), Germain (1904)
Unio batavus var. ligericusWesterlund (1890)
Unio (Groupe de l’U. batavus) ligericusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio locardianus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 287, 356.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 138 [32].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 164, fig. 178.
Type(s): IDIOTYPE MNHN_22316, l’Albane (Côte-d’Or).

Unio locardianusLocard (1882), Westerlund (1890)
Unio (Groupe de l’U. locardianus) locardianusLocard (1882), Locard (1893)
Unio (Locardiana) locardianusLocard (1889)
Unio crassusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio macrorhynchus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 292, 361.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 132 [26].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 158, fig. 172.
Type(s): LECTOTYPE MNHN_22326, lac du Bourget.

Unio macrorhynchusLocard (1882), Westerlund (1890)
Unio (Groupe de l’U. sandrii) macrorhynchusLocard (1882)
Unio (Sandriana) macrorhynchusLocard (1889)
Unio (Groupe de l’U. macrorhynchus) macrorhynchusLocard (1893)
Unio mancus var. macrorhynchusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio matronicus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 289, 358.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 143 [37].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 170.
Type(s): LECTOTYPE MNHN_22355, La Marne à Lagny (Seine-et-Marne).

Unio matronicusLocard (1882)
Unio (Bataviana) matronicusServain (1882), Servain (1888)
Unio (Groupe de l’U. Batavus) matronicusLocard (1882)
Unio (Batavusiana) matronicusLocard (1889), Germain (1904)
Unio batavus var. matronicusWesterlund (1890)
Unio (Groupe de l’U. batavus) matronicusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio melas Locard, 1882
Coutagne in Locard, 1882, Prodr. Malac. Franç. 1: 285, 355.
‘Coutagne’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 128 [22].
‘Coutagne’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 155, fig. 169.
Type(s): SYNTYPE MNHN_22363, Saulcy-sur-Meurthe (Vosges) [written on shell].

Unio melasLocard (1882)
Unio (Groupe de l’U. crassus) melasLocard (1882)
Unio (Melasiana) melasLocard (1889), Germain (1904)
Unio (Groupe de l’U. melas) melasLocard (1893)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio minutus Locard, 1882
‘Ray’ Locard, 1882, Prodr. Malac. Franç. 1: 290. [nomen nudum]

Unio minutusLocard (1882)
Unio (Groupe de l’U. fusculus) minutusLocard (1882)
Unio (Amniciana) minutulusServain (1888)
Unio (Amnicusiana) minutulusLocard (1889)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1969)

Unio oxyrhynchus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 285, 355.
‘Brevière’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 149 [43].
‘Brevière’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 180.
(homonym of Unio oxyrhynchus Martens, 1861)
Type(s): LECTOTYPE MNHN_22438, La Canne, dans la Nièvre.

Unio oxyrhynchusLocard (1882)
Unio (Groupe de l’U. crassus) oxyrhynchusLocard (1882)
Unio (Ateriana) oxyrhynchusLocard (1889)
Unio (Groupe de l’U. ater) oxyrhynchusLocard (1893)
Unio consentaneus var. oxyrhynchusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio potamius Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 289, 359.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 140 [34].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 169.
Type(s): IDIOTYPE MNHN_22470, La Brizotte (Côte-d’Or).

Unio potamiusLocard (1882), Bourguignat (1883)
Unio (Groupe de l’U. Batavus) potamiusLocard (1882)
Unio (Ellipsopsisiana) potamiusLocard (1889)
Unio batavus var. potamiusWesterlund (1890)
Unio (Groupe de l’U. batavus) potamiusLocard (1893)
Unio (Batavusiana) potamiusGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio sandrii Locard, 1882
Locard, 1882, Prodr. Malac. Franç. 1: 292.
(misidentified reference to Unio sandrii Rossmässler, 1844)

Unio sandriiLocard (1882)
Unio (Sandriana) sandriopsisLocard (1889)

Unio savensis Drouët, 1882
Drouët, 1882, Unionidae de Serbie: 15.

Unio savensisDrouët (1882), Kobelt (1884), Westerlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio septentrionalis Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 284, 354.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 149 [43].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 181, fig. 194.
Type(s): IDIOTYPE MNHN_22528, le Mandrezey, à Saulcy-sur-Meurthe (Vosges).

Unio septentrionalisLocard (1882)
Unio (Groupe de l’U. ater) septentrionalisLocard (1882), Locard (1893)
Unio (Ateriana) septentrionalisLocard (1889)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio sequanicus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 289, 358.
‘Coutagne’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 142 [36].
‘Coutagne’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 169, fig. 183.
Type(s): LECTOTYPE MNHN_22529, La Marne à Lagny (Seine-et-Marne).

Unio sequanicusLocard (1882)
Unio (Groupe de l’U. Batavus) sequanicusLocard (1882)
Unio (Bataviana) sequanicusServain (1888)
Unio (Batavusiana) sequanicusLocard (1889)
Unio batavus var. sequanicusWesterlund (1890)
Unio (Groupe de l’U. batavus) sequanicusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio socardianus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 286, 355.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 134 [28].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 161.

Unio socardianusLocard (1882)
Unio (Crassiana) socardianusServain (1882)
Unio (Groupe de l’U. crassus) socardianusLocard (1882)
Unio (Socardiana) socardianusLocard (1889)
Unio (Groupe de l’U. feliciani) socardianusLocard (1893)
Unio crassusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio striatulus Drouët, 1882
Drouët, 1882, Unionidae de Serbie: 19.
(homonym of Unio striatulus Lea, 1857; renamed Unio striolatus Drouët, 1884)

Unio striatulusDrouët (1882), Kobelt (1886)
Unio striolatusDrouët (1889), Westerlund (1890)
Unio crassus cythereaHaas (1940)

Unio truncatulus Drouët, 1882
Drouët, 1882, Unionidae de Serbie: 12.
(homonym of Unio rhomboideus var. truncatulus de Joannis, 1859)

Unio truncatulusDrouët (1882), Kobelt (1886), Westerlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio dokici Drouët, 1884
Drouët, 1884, Suppl. Unionidae de Serbie: 5, pl. 1, fig. 1.

Unio dokiciDrouët (1884), Kobelt (1886), Westerlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio rivalis Drouët, 1884
Drouët, 1884, Suppl. Unionidae de Serbie: 13.

Unio rivalisDrouët (1884), Kobelt (1886), Westerlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio serbicus Drouët, 1884
Drouët, 1884, Suppl. Unionidae de Serbie: 9, pl. 1, fig. 1.

Unio serbicusDrouët (1884), Kobelt (1886), Westerlund (1890)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio striolatus Drouët, 1884
Drouët, 1884, Suppl. Unionidae de Serbie: 9.
(new name for Unio striatulus Drouët, 1882)

Unio striolatusDrouët (1884), Drouët (1889), Westerlund (1890)
Unio crassus cythereaHaas (1969)

Unio batavellus Locard, 1885
‘Letourneux’ Locard, 1885, Bull. Soc. Sci. Nat. Rouen 21: 11.
‘Letourneux’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 144 [38].
‘Letourneux’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 170, fig. 184.
Type(s): LECTOTYPE MNHN_22127, La Bouille, près de Rouen (Seine-Inf.).

Unio batavellusLocard (1885), Westerlund (1890), Rochebrune (1903), Kobelt & Haas (1911)
Unio (Bataviana) batavellusServain (1888)
Unio (Batavusiana) batavellusLocard (1889), Germain (1904)
Unio (Groupe de l’U. batavus) batavellusLocard (1893)
Unio batavus var. baraceusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio duregicus Servain, 1885
Servain, 1885, Bull. Soc. Malac. France 2: 331.

Unio duregicusServain (1885), Westerlund (1890)
Unio (Fusculusiana) duregicusLocard (1889)
Unio consentaneus ostiorumKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio ostiorum Servain, 1885
‘Brot, mss.’ Servain, 1885, Bull. Soc. Malac. France 2: 327.

Unio ostiorumServain (1885)
Unio (Sandriana) necomensisLocard (1889)
Unio neocomensisWesterlund (1890)
Unio consentaneus ostiorumKobelt & Haas (1911)
Unio mancus var. macrorhynchusGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio sandriopsis Servain, 1885
‘Bourguignat, mss.’ Servain, 1885, Bull. Soc. Malac. France 2: 325.

Unio sandriopsisServain (1885), Westerlund (1890)
Unio (Sandriana) sandriopsisLocard (1889)
Unio (Groupe de l’U. macrorhynchus) sandriopsisLocard (1893)
Unio mancus var. macrorhynchusGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio subrobustus Servain, 1885
‘Bourguignat, mss.’ Servain, 1885, Bull. Soc. Malac. France 2: 332.

Unio subrobustusServain (1885), Westerlund (1890)
Unio (Socardiana) subrobustusLocard (1889)
Unio (Groupe de l’U. feliciani) subrobustusLocard (1893)
Unio crassusGermain (1931)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio tiguricus Servain, 1885
Servain, 1885, Bull. Soc. Malac. France 2: 329.

Unio tiguricusServain (1885), Westerlund (1890)
Unio (Sandriana) tiguricusLocard (1889)
Unio consentaneus ostiorumKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio turicus Servain, 1885
Servain, 1885, Bull. Soc. Malac. France 2: 327.

Unio turicusServain (1885), Westerlund (1890)
Unio (Sandriana) turicusLocard (1889)
Unio consentaneus ostiorumKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio hueti Kobelt, 1886
‘Bourg.’ Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 22, pl. 41, fig. 255.
(misidentified reference to Unio hueti Bourguignat, 1855)

Unio huetiKobelt (1886)
Unio (sec. Lymnium) pseudonymusSimpson (1900), Simpson (1914)

Unio kochi Kobelt, 1886
Sandberger & Koch, 1851, Jb. Nassau. Ver. Naturk. 7: 245 [as ‘U. moquinianus’].
Kobelt, 1886, Jb. Nassau. Ver. Naturk. 39: 97, pl. 6, fig. 1.
Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 46, pl. 56, figs. 295-296.

Unio kochiKobelt (1886), Kobelt (1886), Westerlund (1890)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio neocomiensis Kobelt, 1886
‘Drouët’ Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 34.
(error for Unio neocomensis Drouët, 1881)

Unio neocomiensisKobelt (1886)

Unio sieversi Kobelt, 1886
Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: pl. 53, fig. 286.
(reference to Unio sieversi Drouët, 1881)

Unio sieversiKobelt (1886)
Unio sieversi var. kobeltiWesterlund (1890)

Unio batavus var. taunica Kobelt, 1886
Kobelt, 1886, Jb. Nassau. Ver. Naturk. 39: 96, pl. 7, fig. 5.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus var. taunicaKobelt (1886)
Unio batavus var. aterClessin (1877)
Unio (sec. Hyridella) batavus vr. taunicusPaetel (1890)
Unio batavus var. taunicusWesterlund (1890)
Unio batavus taunicusHaas (1910)
Unio crassus batavusHaas (1940), Haas (1969)

Unio baroni Servain, 1887
Servain, 1887, Bull. Soc. Malac. France 4: 254.

Unio baroniServain (1887), Westerlund (1890)
Unio (Penchinatiana) baroniLocard (1889)
Unio (Groupe de l’U. fusculus) baroniLocard (1893)

Unio carcasinus Sourbieu, 1887
Sourbieu, 1887, Bull. Soc. Malac. France 4: 235.

Unio carcasinusSourbieu (1887), Westerlund (1890), Baichère (1890)
Unio (Fusculusiana) carcasinusLocard (1889)
Unio crassus var. piscinalisGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio badiellus Drouët, 1888
Drouët, 1888, J. de Conch. 36: 107.
Drouët, 1889, Mém. Acad. Sci. Dijon 1: 76, pl. 1, fig. 4.

Unio badiellusDrouët (1888), Drouët (1889), Westerlund (1890)
Unio (Locardiana) badiellusLocard (1889)
Unio (Groupe de l’U. batavus) badiellusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio baudoni Folin, 1888
Folin, 1888, Le Naturaliste 10: 273, 4 text figs.
(homonym of Unio baudoni Folin & Bérillon, 1874)

Unio baudoniFolin (1888), Westerlund (1890), Kobelt (1902)
Unio crassus batavusHaas (1940), Haas (1969)

Unio crassulus Drouët, 1888
Drouët, 1888, J. de Conch. 36: 106.
Drouët, 1889, Mém. Acad. Sci. Dijon 1: 66, pl. 2, fig. 5.
Type(s): SYNTYPE MNHN_MP_0027, Saone.

Unio crassulusDrouët (1888), Drouët (1889)
Unio (Ateriana) breviereiLocard (1889)
Unio breviereiWesterlund (1890)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio dilophius Servain, 1888
‘Bourguignat’ Servain, 1888, Bull. Soc. Malac. France 5: 316, footnote. [nomen nudum]
Locard, 1889, Contr. Faune Malacol. Franc. 13: 136 [30], footnote. [nomen nudum]

Unio dilophiusServain (1888)
Unio (Amniciana) dilophiusServain (1888)
Unio (Amnicusiana) dilophiusLocard (1889)

Unio hamburgiensis Servain, 1888
Servain, 1888, Bull. Soc. Malac. France 5: 315.

Unio hamburgiensisServain (1888), Westerlund (1890)
Unio (Amniciana) hamburgiensisServain (1888)
Unio (Crassiana) hamburgiensisLocard (1889)
Unio (Groupe de l’U. feliciani) hamburgiensisLocard (1893)
Unio crassusGermain (1931)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio minutulus Servain, 1888
‘Ray’ Locard, 1882, Prodr. Malac. Franç. 1: 290 [as ‘Unio minutus’]. [nomen nudum]
‘Ray’ Servain, 1888, Bull. Soc. Malac. France 5: 316.

Unio minutulusServain (1888), Westerlund (1890)
Unio (Amniciana) minutulusServain (1888)
Unio (Amnicusiana) minutulusLocard (1889)
Unio (Groupe de l’U. amnicus) minutulusLocard (1893)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940)

Unio vegesackensis Servain, 1888
Bourguignat in Servain, 1888, Bull. Soc. Malac. France 5: 317.

Unio vegesackensisServain (1888), Westerlund (1890)
Unio (Bataviana) vegesackensisServain (1888)
Unio crassus batavusHaas (1940), Haas (1969)

Unio visurgisinus Servain, 1888
Servain, 1888, Bull. Soc. Malac. France 5: 316.

Unio visurgisinusServain (1888), Westerlund (1890)
Unio (Bataviana) visurgisinusServain (1888)
Unio (Batavusiana) visurgicusLocard (1889), Germain (1904)
Unio (Groupe de l’U. batavus) visurgicusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio adonus Locard, 1889
‘Servain’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 146 [40], 211 [105].
‘Servain’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 175, fig. 188.
Type(s): LECTOTYPE MNHN_22085, La Loire a Basse Indre (Loire-Inf.).

Unio adonusLocard (1889), Westerlund (1890)
Unio (Pisaniana) adonusLocard (1889)
Unio (Groupe de l’U. adonus) adonusLocard (1893)
Unio (Lemotheuxiana) adonusGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio ampulodon Locard, 1889
‘Coutagne Mss. teste Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 128 [22]. [nomen nudum]
(intro'd as syn of Unio dubisianopsis Locard, 1889)

Unio ampulodonLocard (1889)
Unio (Melasiana) dubisianopsisLocard (1889)
Unio mancus var. amnicusGermain (1931)

Unio andeliacus Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 138 [32], 196 [90].
Bourguignat in Locard, 1893, Coqu. Eau Douce Saumâtre France: 165.
Type(s): LECTOTYPE MNHN_22101, le Gouet, à Saint-Brieue (Côtes-du-Nord).

Unio andeliacusLocard (1889), Westerlund (1890)
Unio (Nubilusiana) andeliacusLocard (1889)
Unio (Groupe de l’U. locardianus) andeliacusLocard (1893)
Unio mancus var. elongatulusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio aturicus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 129 [23], 188 [82].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 157.
Type(s): HOLOTYPE (MONOTYPY) MNHN_22118, Bahus (Landes).

Unio aturicusLocard (1889), Westerlund (1890)
Unio (Mancusiana) aturicusLocard (1889)
Unio (Groupe de l’U. mancus) aturicusLocard (1893)
Unio mancus var. amnicus form ripariusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio balbignyanus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 147 [41], 217 [111].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 178.
Type(s): LECTOTYPE MNHN_22122, La Loire, à Balbigny (Loire).

Unio balbignyanusLocard (1889), Westerlund (1890)
Unio (Ateriana) balbignyanusLocard (1889)
Unio (Groupe de l’U. ater) balbignyanusLocard (1893)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio besnardianus Locard, 1889
Servain, 1888, Bull. Soc. Malac. France 5: 317. [nomen nudum]
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 141 [35], 206 [100].
‘Servain’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 172, fig. 186 [as ‘besnardinus’].
(renamed Unio besnardi Germain, 1904)
Type(s): LECTOTYPE MNHN_22133, La Loire, à Saint-Gemmes (Maine-et-Loire).

Unio besnardianusLocard (1889), Westerlund (1890)
Unio (Bataviana) besnardianusServain (1888)
Unio (Batavusiana) besnardianusLocard (1889)
Unio (Groupe de l’U. batavus) besnardinusLocard (1893)
Unio (Batavusiana) besnardiGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio bosnicus Locard, 1889
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 132 [26].
(new name for Unio bosnensis Möllendorff, 1874)

Unio bosnicusLocard (1889), Westerlund (1890)
Unio (Fusculusiana) bosnicusLocard (1889)
Unio crassus cythereaHaas (1969)

Unio caroliensis Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 159 [53], 237 [131].
‘F. Pacome’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 172.
Type(s): LECTOTYPE MNHN_22167, Charolles (Saône-et-Loire).

Unio caroliensisLocard (1889), Westerlund (1890)
Unio (Mariana) caroliensisLocard (1889)
Unio (Groupe de l’U. batavus) caroliensisLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio catalaunicus Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 133 [27], 192 [86].
‘Coutagne’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 160.
Type(s): LECTOTYPE MNHN_22171, La Marne, à Charenton (Seine).

Unio catalaunicusLocard (1889), Westerlund (1890)
Unio (Fusculusiana) catalaunicusLocard (1889)
Unio (Groupe de l’U. fusculus) catalaunicusLocard (1893)
Unio crassus var. piscinalisGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio caumonti Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 145 [39], 207 [101].
Bourguignat in Locard, 1893, Coqu. Eau Douce Saumâtre France: 171.

Unio caumontiLocard (1889), Westerlund (1890)
Unio (Batavusiana) caumontiLocard (1889)
Unio (Groupe de l’U. batavus) caumontiLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio diptychus Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 143 [37], 201 [95].
‘Surault’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 169.
Type(s): POSSIBLE SYNTYPE MNHN_22192, La Loire à Ingrandes.

Unio diptychusLocard (1889), Westerlund (1890)
Unio (Batavusiana) diptychusLocard (1889), Germain (1904)
Unio (Groupe de l’U. batavus) diptychusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio dubisianopsis Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 128 [22].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 155.
(error for Unio dubisiopsis Locard, 1882)

Unio dubisianopsisLocard (1889)

Unio euthymeanus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 166 [60], 245 [139].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 203.
Type(s): LECTOTYPE MNHN_22202, La Saône à Collonges (Rhône).

Unio euthymeanusLocard (1889), Westerlund (1890)
Unio (Vinceleusiana) euthymeanusLocard (1889)
Unio (Groupe de l’U. tumens) euthymeanusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio financei Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 143 [37], 205 [99].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 171.
Type(s): IDIOTYPE MNHN_22217, La Marne à Châlons (Marne).

Unio financeiLocard (1889), Westerlund (1890)
Unio (Batavusiana) financeiLocard (1889)
Unio (Groupe de l’U. batavus) financeiLocard (1893)
Unio batavusGermain (1931)

Unio hattemani Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 146 [40], 212 [106].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 176.
Type(s): SYNTYPE MNHN_22254, La Loire, à Basse-Indre.

Unio hattemaniLocard (1889), Westerlund (1890)
Unio (Pisaniana) hattemaniLocard (1889)
Unio (Groupe de l’U. adonus) hattemaniLocard (1893)
Unio (Lemotheuxiana) hattemanniGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio ignari Locard, 1889
‘Nilss.’ Drouët, 1857, Étud. Naïades. France, Unio: 72, pl. 4, fig. 1 [as ‘U. ater’].
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 146 [40], 213 [107].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 176.
Type(s): SYNTYPES MNHN_22270, Le Mandrezey, à Saulcy-sur-Meurthe (Vosges).

Unio ignariLocard (1889), Westerlund (1890)
Unio (Ateriana) ignariLocard (1889)
Unio (Groupe de l’U. ater) ignariLocard (1893)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio ignariformis Locard, 1889
‘Dup.’ Drouët, 1857, Étud. Naïades. France, Unio: 100, pl. 9, fig. 1 [as ‘U. platyrhynchoideus’].
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 147 [41], 214 [108].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 177.

Unio ignariformisLocard (1889), Westerlund (1890)
Unio (Ateriana) ignariformisLocard (1889)
Unio (Groupe de l’U. ater) ignariformisLocard (1893)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio ingrandiensis Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 143 [37], 202 [96].
‘Sarault’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 173.
Type(s): POSSIBLE SYNTYPE MNHN_22282, Ingrandes (Maine-et-Loire).

Unio ingrandiensisLocard (1889), Westerlund (1890)
Unio (Batavusiana) ingrandiensisLocard (1889), Germain (1904)
Unio (Groupe de l’U. batavus) ingrandiensisLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio jurianus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 129 [23], 187 [81].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 157, fig. 171 [as ‘juranus’].
Type(s): LECTOTYPE MNHN_22292, La Valouze (Jura).

Unio jurianusLocard (1889), Westerlund (1890)
Unio (Mancusiana) jurianusLocard (1889)
Unio (Groupe de l’U. mancus) juranusLocard (1893)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio lemotheuxi Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 145 [39], 208 [102].
‘Servain’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 175, fig. 189.
Type(s): LECTOTYPE MNHN_22306, le Reyran (Var).

Unio lemotheuxiLocard (1889), Westerlund (1890)
Unio (Lemotheuxiana) lemotheuxiLocard (1889), Germain (1904), Caziot (1910)
Unio (Groupe de l’U. adonus) lemotheuxiLocard (1893)
Unio mancus var. elongatulusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio mariae Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 159 [53], 236 [130] [as ‘mariæ’].
‘F. Pacome’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 172 [as ‘mariæ’].
Type(s): IDIOTYPE MNHN_22342, La Loire à Nantes (Loire-Infereur).

Unio mariaeLocard (1889)
Unio (Mariana) mariæLocard (1889)
Unio mariæWesterlund (1890)
Unio (Groupe de l’U. batavus) mariæLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio materniacus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 143 [37], 203 [97].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 168, fig. 182.
Type(s): LECTOTYPE MNHN_22347, la Somme à Abbeville.

Unio materniacusLocard (1889), Westerlund (1890), Rochebrune (1903)
Unio (Batavusiana) materniacusLocard (1889)
Unio (Groupe de l’U. batavus) materniacusLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio melantatus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 147 [41], 216 [110].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 177.
Type(s): LECTOTYPE MNHN_22360, La Loire à Balbigny (Loire).

Unio melantatusLocard (1889), Westerlund (1890)
Unio (Ateriana) melantatusLocard (1889)
Unio (Groupe de l’U. ater) melantatusLocard (1893)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio necomensis Locard, 1889
‘Drouët’ of Authors.
Locard, 1889, Contr. Faune Malacol. Franc. 13: 132 [26].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 159.
Germain, 1931, Faune de France 22: 725.
(error for Unio neocomensis Drouët, 1881)

Unio necomensisLocard (1889)
Unio mancus var. macrorhynchusGermain (1931)

Unio nicolloni Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 141 [35], 200 [94].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 173.
Type(s): HOLOTYPE (MONOTYPY) MNHN_22404, Nantes.

Unio nicolloniLocard (1889), Westerlund (1890)
Unio (Sperchinusiana) nicolloniLocard (1889)
Unio (Groupe de l’U. batavus) nicolloniLocard (1893)
Unio (Batavusiana) nicolloniGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio nubilus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 138 [32], 198 [92].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 165, fig. 179.
(homonym of Unio nubilus Lea, 1868)
Type(s): LECTOTYPE MNHN_22414, Verpillière (Isère).

Unio nubilusLocard (1889), Westerlund (1890), Rochebrune (1903)
Unio (Nubilusiana) nubilusLocard (1889)
Unio (Groupe de l’U. locardianus) nubilusLocard (1893)
Unio mancus var. elongatulusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio occidentalis Locard, 1889
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 149 [43], 220 [114].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 180.
‘Bourguignat’ Locard, 1899, Conchyliol. Portug.: 220.
(homonym of Unio occidentalis Conrad, 1836)
Type(s): LECTOTYPE MNHN_22424, Balbigny (Loire).

Unio occidentalisLocard (1889), Westerlund (1890)
Unio (Ateriana) occidentalisLocard (1889)
Unio (Groupe de l’U. ater) occidentalisLocard (1893)
Unio (groupe de l’U. ater) occidentalisLocard (1899)
Unio consentaneusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio orbus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 138 [32], 195 [89].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 165.
Type(s): LECTOTYPE MNHN_22427, Pentoise (Jura).

Unio orbusLocard (1889), Westerlund (1890)
Unio (Locardiana) orbusLocard (1889)
Unio (Groupe de l’U. locardianus) orbusLocard (1893)
Unio crassus batavusHaas (1940), Haas (1969)

Unio redactus Drouët, 1889
Drouët, 1889, Mém. Acad. Sci. Dijon 1: 79, pl. 1, fig. 2.

Unio redactusDrouët (1889), Kobelt (1893)
Unio (Amnicusiana) amnicusLocard (1889)
Unio amnicusWesterlund (1890)
Unio nanaKobelt & Haas (1911)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio seneauxi Locard, 1889
‘Linn.’ Draparnaud, 1806, Hist. Moll. France: 131, pl. 11, figs. 3 [as ‘Unio pictorum var. B’].
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 145 [39], 208 [102].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 174, fig. 187 [as ‘senauxi’].
Type(s): LECTOTYPE MNHN_22523, La Loire à Orléans.

Unio seneauxiLocard (1889)
Unio (Batavusiana) seneauxiLocard (1889), Germain (1904)
Unio caumontiWesterlund (1890)
Unio (Groupe de l’U. batavus) senauxiLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio sperchinus Locard, 1889
‘Thièse’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 141 [35], footnote. [nomen nudum]

Unio sperchinusLocard (1889)
Unio (Sperchinusiana) sperchinusLocard (1889)

Unio subamnicus Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 137 [31], 194 [88].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 163.
Type(s): SYNTYPE MNHN_22559, La Saône, à Auxonne (Côte-d’Or).

Unio subamnicusLocard (1889), Westerlund (1890), Kobelt & Haas (1911)
Unio (Amnicusiana) subamnicusLocard (1889)
Unio (Groupe de l’U. amnicus) subamnicusLocard (1893)
Unio mancus var. amnicusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio surraulti Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 144 [38], 204 [98].
‘Servain’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 174 [as ‘suraulti’].
Type(s): SYNTYPE MNHN_22569, La Loire à Ingrandes.

Unio surraultiLocard (1889), Westerlund (1890)
Unio (Batavusiana) surraultiLocard (1889), Germain (1904)
Unio (Groupe de l’U. batavus) suraultiLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio valliericus Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 139 [33], 199 [93].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 165.
Type(s): SYNTYPE MNHN_22592, l’Albane (Côte-d’Or).

Unio valliericusLocard (1889), Westerlund (1890)
Unio (Nubilusiana) valliericusLocard (1889)
Unio (Groupe de l’U. locardianus) valliericusLocard (1893)
Unio mancus var. elongatulusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio visurgicus Locard, 1889
‘Servain’ of Authors.
Locard, 1889, Contr. Faune Malacol. Franc. 13: 141 [35].
Locard, 1893, Coqu. Eau Douce Saumâtre France: 173.
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 262.
(error for Unio visurgisinus Servain, 1888)

Unio visurgicusLocard (1889)
Unio visurgisinusWesterlund (1890)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio pilloti var. minor Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 129 [23]. [nomen nudum]
(intro'd as intra-sp. of Unio pilloti Locard, 1882)

Unio pilloti var. minorLocard (1889)
Unio (Mancusiana) pillotiLocard (1889)

Unio suborbicularis var. minor Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21]. [nomen nudum]
Westerlund, 1890, Fauna Paläarct. Binnenconch. 2(7): 84. [nomen nudum]
(intro'd as intra-sp. of Unio suborbicularis Drouët, 1888)

Unio suborbicularis var. minorLocard (1889)
Unio (Nanusiana) lagnysicusLocard (1889)
Unio lagnysicusWesterlund (1890)

Unio subrobustus var. curta Locard, 1889
Locard, 1889, Contr. Faune Malacol. Franc. 13: 135 [29].
(homonym of Unio curtus Lea, 1859; intro'd as intra-sp. of Unio subrobustus Servain, 1885)

Unio subrobustus var. curtaLocard (1889)
Unio (Socardiana) subrobustus var. curtaLocard (1889)

Unio courtilieri Locard, 1889
‘Hattemann’ of Authors.
Locard, 1889, Contr. Faune Malacol. Franc. 13: 132 [26].
‘Hattemann’ Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 256 [18].
‘Hattmann’ Germain, 1931, Faune de France 22: 724, 727.
(error for Unio courtillieri Hattemann, 1859)

Unio courtilieriLocard (1889)

Unio sieversi var. kobelti Westerlund, 1890
Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: pl. 53, fig. 286 [as ‘U. sieversi’].
Westerlund, 1890, Fauna Paläarct. Binnenconch. 2(7): 151.
(intro'd as intra-sp. of Unio sieversi Drouët, 1881; homonym of Unio kobelti Neumayr, 1899)

Unio sieversi var. kobeltiWesterlund (1890)

Unio ampullaceus Locard, 1893
Locard, 1893, Coqu. Eau Douce Saumâtre France: 174.
(homonym of Unio ampullaceus Lea, 1866)
Type(s): LECTOTYPE MNHN_22098, Le Mans (Sarthe).

Unio ampullaceusLocard (1893)
Unio (Groupe de l’U. batavus) ampullaceusLocard (1893)
Unio (Batavusiana) ampullaceusGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio besnardinus Locard, 1893
‘Servain’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 172.
(error for Unio besnardianus Locard, 1889)

Unio besnardinusLocard (1893)
Unio (Batavusiana) besnardiGermain (1904)

Unio chardoni Locard, 1893
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 173.

Unio chardoniLocard (1893)
Unio (Groupe de l’U. batavus) chardoniLocard (1893)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio gliscerus Locard, 1893
Locard, 1893, Coqu. Eau Douce Saumâtre France: 168.
Type(s): LECTOTYPE MNHN_22241, La Loire à Nantes (Loire-Infereur).

Unio gliscerusLocard (1893)
Unio (Groupe de l’U. batavus) gliscerusLocard (1893)
Unio (Batavusiana) gliscerusGermain (1904)
Unio batavusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio juranus Locard, 1893
‘Locard’ of Authors.
Locard, 1893, Coqu. Eau Douce Saumâtre France: 157.
Germain, 1931, Faune de France 22: 725.
(error for Unio jurianus Locard, 1889)

Unio juranusLocard (1893)

Unio lamboltei Locard, 1893
‘Malzine’ of Authors.
Locard, 1893, Coqu. Eau Douce Saumâtre France: 177.
Germain, 1931, Faune de France 22: 732.
Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 130.
(error for Unio lambottei Malzine, 1867)

Unio lambolteiLocard (1893)

Unio lancelevei Locard, 1893
Locard, 1893, Bull. Soc. Sci. Nat. Elbeuf 12: 1.
Locard, 1893, Coqu. Eau Douce Saumâtre France: 170.
Type(s): SYNTYPE MNHN_22305, le Seine au nord d. Rouen.

Unio lanceleveiLocard (1893)
Unio (Groupe de l’U. batavus) lanceleveiLocard (1893)
Unio batavus var. baraceusGermain (1931)
Unio crassus batavusHaas (1940), Haas (1969)

Unio senauxi Locard, 1893
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 174.
(error for Unio seneauxi Locard, 1889)

Unio senauxiLocard (1893)

Unio suraulti Locard, 1893
‘Servain in Locard’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 174.
(error for Unio surraulti Locard, 1889)

Unio suraultiLocard (1893)

Unio lepidulus Drouët, 1898
Drouët, 1898, Mém. Acad. Sci. Dijon ??: 60, pl. 1, fig. 7.

Unio lepidulusDrouët (1898)
Unio mancus var. elongatulusGermain (1931)

Unio batavus var. major Drouët, 1898
Drouët, 1898, Mém. Acad. Sci. Dijon ??: 61.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio (Anodontes) sirionos var. major d’Orbigny, 1835)

Unio batavus var. majorDrouët (1898)
Unio batavus var. baraceusGermain (1931)

Unio ellipsopsis Locard, 1899
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 140 [34]. [nomen nudum]
Bourguignat in Locard, 1899, Conchyliol. Portug.: 218.

Unio ellipsopsisLocard (1899)
Unio (Ellipsopsisiana) ellipsopsisLocard (1889)
Unio (groupe de l’U. ellipsopsis) ellipsopsisLocard (1899)

Unio musicus Simpson, 1900
‘Spengler’ Simpson, 1900, Proc. U.S. Nat. Mus. 22: 744.
(error for Unio musivus Spengler, 1793)

Unio musicusSimpson (1900)
Unio (sec. Lymnium) batavusSimpson (1914)

Unio besnardi Germain, 1904
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 261 [23].
(new name for Unio besnardianus Locard, 1889)

Unio besnardiGermain (1904)
Unio (Batavusiana) besnardiGermain (1904)

Unio hattemanni Germain, 1904
‘Bourguignat’ Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 265 [27].
(error for Unio hattemani Locard, 1889)

Unio hattemanniGermain (1904)

Unio batavellus var. perconvexus Germain, 1904
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 260 [22].
(intro'd as intra-sp. of Unio batavellus Locard, 1885)

Unio batavellus var. perconvexusGermain (1904)
Unio (Batavusiana) batavellus perconvexusGermain (1904)

Unio batavus var. radiata Germain, 1904
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 257 [19].
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio (Elliptio) viridis var. radiata Rafinesque, 1820)

Unio batavus var. radiataGermain (1904)
Unio (Batavusiana) batavus radiataGermain (1904)

Unio ligericus var. subsinuatus Germain, 1904
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 259 [21].
(intro'd as intra-sp. of Unio ligericus Locard, 1882)

Unio ligericus var. subsinuatusGermain (1904)
Unio (Batavusiana) ligericus subsinuatusGermain (1904)

Unio pseudolittoralis Riemenschneider, 1907
‘Clessin’ of Authors.
Riemenschneider, 1907, Nachr. Bl. Dtsch. Malak. Ges. 39: 150.
Vinarski & Kantor, 2016, Analyt. Cat. Fr. Brack. Moll. Russia: 25.
(error for Unio pseudolitoralis Clessin, 1877)

Unio pseudolittoralisRiemenschneider (1907)

Unio pseudolittoralis [sic] var. curonicus Riemenschneider, 1907
Riemenschneider, 1907, Nachr. Bl. Dtsch. Malak. Ges. 39: 150.
(intro'd as intra-sp. of Unio pseudolitoralis Clessin, 1877)

Unio pseudolittoralis var. curonicusRiemenschneider (1907)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio hassiae Haas, 1908
Haas, 1908, Nachr. Bl. Dtsch. Malak. Ges. 40: 175.

Unio hassiaeHaas (1908)
Unio batavus hassiaeKobelt & Haas (1911)
Unio crassus batavusHaas (1940), Haas (1969)

Unio pseudocrassus Haas, 1909
Haas, 1909, Beitr. Kenntn. Mittleleurop. Najadeen, Beilage zu... 41: 29.

Unio pseudocrassusHaas (1909)
Unio batavus pseudocrassusKobelt & Haas (1911)
Unio crassus batavusHaas (1940), Haas (1969)

Unio brandisi Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 82, pl. 419, figs. 2434-2435.

Unio brandisiKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio travnicensis Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 83, pl. 420, figs. 2436-2438.

Unio travnicensisKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio batavus badensis Haas, 1910
Haas, 1910, Mitteleur. Najad., Beiträge Nachr. Bl. Dtsch. Malak. Ges. (4): 60.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus badensisHaas (1910)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus sabulosus Haas, 1910
Haas, 1910, Mitteleur. Najad., Beiträge Nachr. Bl. Dtsch. Malak. Ges. (4): 59.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus sabulosusHaas (1910)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus forma elongata Clessin, 1910
Clessin, 1910, Nachr. Bl. Dtsch. Malak. Ges. 42: 66.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio elongata Lamarck, 1819)

Unio batavus forma elongataClessin (1910)
Unio consentaneus elongatusKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus hohenwarti Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 78, pl. 418, fig. 2427.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus hohenwartiKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus langi Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 70, pl. 415, fig. 2414.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus langiKobelt (1910)
Unio consentaneus var. langiKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus subterminalis Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 80, pl. 418, fig. 2429.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus subterminalisKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus thayacus Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 69, pl. 414, figs. 2410-2411; pl. 415, fig. 2413.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus thayacusKobelt (1910)
Unio consentaneus var. thayacusKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio (consentaneus var. ?) gallensteini Kobelt, 1910
Kobelt, 1910, Icon. Land- und Süssw.-Moll. 15: 79, pl. 418, fig. 2428.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836; homonym of Unio lijacensis var. gallensteini Kobelt, 1890)

Unio (consentaneus var. ?) gallensteiniKobelt (1910)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio kungurensis Kobelt, 1911
Kobelt, 1911, Icon. Land- und Süssw.-Moll. 18: 24, pl. 490, figs. 2622-2623.

Unio kungurensisKobelt (1911)
Unio (s.s.) crassus kungurensisZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio roseni Kobelt, 1911
Kobelt, 1911, Icon. Land- und Süssw.-Moll. 18: 27, pl. 492, fig. 2627.

Unio roseniKobelt (1911)
Unio (s.s.) crassus var. roseniZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)

Unio batavus hexameri Haas, 1911
Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 526, pl. 4, fig. 2.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus hexameriHaas (1911)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus palatinus Haas, 1911
Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 525, pl. 4, fig. 3.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus palatinusHaas (1911)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus probavaricus Haas, 1911
Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 526, pl. 4, fig. 9.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus probavaricusHaas (1911)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus forma pseudoconsentaneus Geyer, 1911
Geyer, 1911, Jh. Ver. Vaterl. Naturkde. Württemb. 67: 365, pl. 5, fig. 3.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus forma pseudoconsentaneusGeyer (1911)
Unio crassus batavusHaas (1969)

Unio consentaneus abnobae Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 23, pl. 458, figs. 2473-2477.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus abnobaeKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus biandeti Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 22, pl. 457, fig. 2470.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus biandetiKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus bodamicus Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 21, pl. 456, figs. 2465-2466.
(intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus bodamicusKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus dilatatus Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 18, pl. 453, figs. 2447-2448; 23, pl. 457, fig. 2472.

Unio consentaneus dilatatusKobelt & Haas (1911)
Unio crassus cythereaHaas (1940), Haas (1969)

Unio consentaneus elongatus Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 20, pl. 455, figs. 241.
(homonym of Unio elongata Lamarck, 1819; intro'd as intra-sp. of Unio consentaneus Rossmässler, 1836)

Unio consentaneus elongatusKobelt & Haas (1911)
Unio crassus cythereaHaas (1969)

Unio consentaneus marisaensis Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 57, pl. 479, figs. 2559-2562.
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: pl. 479 [caption, as “marisensis”].

Unio consentaneus marisaensisKobelt & Haas (1911)
Unio crassus cythereaHaas (1969)

Unio consentaneus marisensis Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: pl. 479 [caption].
(incorrect original spelling of Unio consentaneus marisaensis Kobelt & Haas, 1911)

Unio consentaneus marisensisKobelt & Haas (1911)

Unio crassus heimburgi Haas, 1911
Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 527, pl. 6, fig. 20.
(intro'd as intra-sp. of Unio crassus Retzius, 1788)

Unio crassus heimburgiHaas (1911)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio crassus var. okae Kobelt & Haas, 1911
Kobelt & Haas, 1911, Icon. Land- und Süssw.-Moll. 17: 58, index, pl. 480, fig. 2567.
(intro'd as intra-sp. of Unio crassus Retzius, 1788)

Unio crassus var. okaeKobelt & Haas (1911)
Unio (s.s.) crassus var. okaeZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)

Unio kungurensis chlebnikowi Kobelt, 1911
Kobelt, 1911, Icon. Land- und Süssw.-Moll. 18: 26, pl. 491, fig. 2624.
(intro'd as intra-sp. of Unio kungurensis Kobelt, 1911; renamed Unio crassus var. chlebnikovi Zhadin, 1938)

Unio kungurensis chlebnikowiKobelt (1911)
Unio (s.s.) crassus var. chlebnikoviZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio kungurensis sylwensis Kobelt, 1911
Kobelt, 1911, Icon. Land- und Süssw.-Moll. 18: 26, pl. 491, fig. 2625.
(intro'd as intra-sp. of Unio kungurensis Kobelt, 1911)

Unio kungurensis sylwensisKobelt (1911)
Unio (s.s.) crassus var. chlebnikoviZhadin (1938)
Unio crassus gontieriHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio batavus distinguendus C. Boettger, 1912
C. Boettger, 1912, Arch. Naturg. 78: 305, pl. 1, fig. 7.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus distinguendusC. Boettger (1912)
Unio crassus batavusHaas (1940), Haas (1969)

Unio batavus navensis C. Boettger, 1912
C. Boettger, 1912, Arch. Naturg. 78: 305, pl. 5, figs. 1-3.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus navensisC. Boettger (1912)
Unio crassus batavusHaas (1940), Haas (1969)

Unio subbatavus Kobelt, 1913
Bourguignat in Servain, 1888, Bull. Soc. Malac. France 5: 317. [nomen nudum]
Kobelt, 1913, Icon. Land- und Süssw.-Moll. 19: 48, pl. 534, fig. 2749.

Unio subbatavusKobelt (1913)
Unio (Bataviana) subbatavusServain (1888)
Unio crassus gontieriHaas (1940), Haas (1969)

Unio batavus kobeltianus Haas, 1913
Haas, 1913, Nachr. Bl. Dtsch. Malak. Ges. 45: 105.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)

Unio batavus kobeltianusHaas (1913)
Unio crassus batavusHaas (1940), Haas (1969)

Unio crassus thuringiacus Israel, 1913
Israel, 1913, [in] Thüring. Lehrerverein Naturk.: 28, pl. 6, figs. 4-6.
(intro'd as intra-sp. of Unio crassus Retzius, 1788)

Unio crassus thuringiacusIsrael (1913)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio crassus ornatus Polinksi, 1917
Polinksi, 1917, C. R. Soc. Sci. Varsovie 10: 904, pl. ??, fig. 2.
(intro'd as intra-sp. of Unio crassus Retzius, 1788; homonym of Unio ovatus var. ornatus Conrad, 1835)

Unio crassus ornatusPolinksi (1917)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio crassus polonicus Polinksi, 1917
Polinksi, 1917, C. R. Soc. Sci. Varsovie 10: 902, pl. ??, figs. 1, 3.
(intro'd as intra-sp. of Unio crassus Retzius, 1788)

Unio crassus polonicusPolinksi (1917)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio cantianus Kennard & Woodward, 1924
Kennard & Woodward, 1924, Proc. Malac. Soc. London 16: 136, text figs. 8-9.

Unio cantianusKennard & Woodward (1924)
Unio crassus batavusHaas (1940), Haas (1969)

Unio carioliensis Germain, 1931
‘Pacôme’ Germain, 1931, Faune de France 22: 728.
(error for Unio caroliensis Locard, 1889)

Unio carioliensisGermain (1931)

Unio nubilius Germain, 1931
‘Locard’ Germain, 1931, Faune de France 22: 727.
(error for Unio nubilus Locard, 1889)

Unio nubiliusGermain (1931)

Unio valleriacus Germain, 1931
‘Bourg. in Loc.’ Germain, 1931, Faune de France 22: 727.
(error for Unio valliericus Locard, 1889)

Unio valleriacusGermain (1931)

Unio visursisinus Germain, 1931
‘Servain’ Germain, 1931, Faune de France 22: 728.
(error for Unio visurgisinus Servain, 1888)

Unio visursisinusGermain (1931)

Unio crassus consentancus Zhadin, 1938
‘Ziegler’ Zhadin, 1938, Faune USSR Mollusques 4(1): 91.
(error for Unio consentaneus Rossmässler, 1836)

Unio crassus consentancusZhadin (1938)

Unio crassus var. chlebnikovi Zhadin, 1938
‘Kobelt’ Zhadin, 1938, Faune USSR Mollusques 4(1): 89.
(new name for Unio kungurensis chlebnikowi Kobelt, 1911)

Unio crassus var. chlebnikoviZhadin (1938)

Unio crassus var. ishmensis Zhadin, 1938
Zhadin, 1938, Faune USSR Mollusques 4(1): 160.
(intro'd as intra-sp. of Unio crassus Retzius, 1788)

Unio crassus var. ishmensisZhadin (1938)
Unio (s.s.) crassus var. ishmensisZhadin (1938)
Unio crassus crassusHaas (1940), Haas (1969)
Unio (Crassiana) crassusVinarski & Kantor (2016)

Unio crassus var. stepanovi Zhadin, 1938
‘Drouët’ Zhadin, 1938, Faune USSR Mollusques 4(1): 90.
(error for Unio stepanoffi Drouët, 1881)

Unio crassus var. stepanoviZhadin (1938)

Unio raddei var. kutaisiana Zhadin, 1938
‘Kobelt’ of Authors.
Zhadin, 1938, Faune USSR Mollusques 4(1): 94.
Zatravkin, 1987, Byull. Mosk. Obshch.. Ispyt. Prir. 92(4): 49.
(error for Unio raddei var. koutaisiana Kobelt, 1886)

Unio raddei var. kutaisianaZhadin (1938)

Unio hattmanni Haas, 1940
‘Bourguignat’ Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 131.
(error for Unio hattemani Locard, 1889)

Unio hattmanniHaas (1940)

Unio kungurensis sylvensis Haas, 1940
‘Kobelt’ Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 132.
‘Kobelt’ Haas, 1969, Das Tierreich 88: 53.
Vinarski & Kantor, 2016, Analyt. Cat. Fr. Brack. Moll. Russia: 25.
(error for Unio kungurensis sylwensis Kobelt, 1911)

Unio kungurensis sylvensisHaas (1940)

Unio raddei var. kutaisanus Haas, 1940
‘Kobelt’ Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 131.
(error for Unio raddei var. koutaisiana Kobelt, 1886)

Unio raddei var. kutaisanusHaas (1940)

Unio lancelevi Haas, 1969
‘Locard’ Haas, 1969, Das Tierreich 88: 51.
(error for Unio lancelevei Locard, 1893)

Unio lanceleviHaas (1969)

Unio raddei var. koutaisanus Haas, 1969
‘Kobelt’ Haas, 1969, Das Tierreich 88: 53.
(error for Unio raddei var. koutaisiana Kobelt, 1886)

Unio raddei var. koutaisanusHaas (1969)

Unio byzantius Zatravkin, 1983
‘Drouet’ Zatravkin, 1983, [in] I.M. Likharev, Molluscs: 40.
(error for Unio byzantinus Drouët, 1879)

Unio byzantiusZatravkin (1983)

Unio arazenus Zatravkin, 1987
‘Drouet’ Zatravkin, 1987, Byull. Mosk. Obshch.. Ispyt. Prir. 92(4): 49.
(error for Unio araxenus Drouët, 1881)

Unio arazenusZatravkin (1987)

Unio crassus var. irgislaicus Zatravkin, 1987
‘Lindholm’ Zatravkin, 1987, Byull. Mosk. Obshch.. Ispyt. Prir. 92(4): 57.
(error for Unio ater var. irgizlaicus Lindholm, 1904)

Unio crassus var. irgislaicusZatravkin (1987)

Unio mingrelicus var. stevenianiformes Zatravkin, 1987
‘Shadin’ Zatravkin, 1987, Byull. Mosk. Obshch.. Ispyt. Prir. 92(4): 56.
(error for Unio mingrelicus var. stevenianiformis Zhadin, 1938)

Unio mingrelicus var. stevenianiformesZatravkin (1987)

Unio stevenianius Bába, 2000
‘Kyrnicky’ Bába, 2000, Boll. Malac. 36(5-8): 135.
(error for Unio stevenianus Drouët, 1881)

Unio stevenianiusBába (2000)

Eolymnium byzantinium Graf, 2007
Graf, 2007, Proc. Acad. Nat. Sci. 156: 84.
(error for Unio byzantinus Drouët, 1879)

Eolymnium byzantiniumGraf (2007)
Unio (Eolymnium) byzantinusVinarski & Kantor (2016)

Crassiana mengrelica Kantor et al., 2010
‘Drouët’ Kantor et al., 2010, Cat. Contin. Moll. Russia: 260.
‘Drouët’ Vinarski & Kantor, 2016, Analyt. Cat. Fr. Brack. Moll. Russia: 26.
(error for Unio mingrelicus Drouët, 1881)

Crassiana mengrelicaKantor et al. (2010)

Unio mingrelicus var. sobrievskii Vinarski & Kantor, 2016
‘Rosen’ Vinarski & Kantor, 2016, Analyt. Cat. Fr. Brack. Moll. Russia: 27.
(error for Unio mingrelicus var. sobriewskii Rosén, 1925)

Unio mingrelicus var. sobrievskiiVinarski & Kantor (2016)

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