Unio littoralis Cuvier, 1798
Schröter, 1779, Gesch. Flußconch.: pl. 2, fig. 3.
Bruguière, 1797, Encycl. Méth. 2: pl. 248, fig. 2 [as Unio sp.].
Cuvier, 1798, Tab. Elem. Hist. Nat. Anim.: 425.
Lamarck, 1801, Sys. Anim. sans Vert.: 114.
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 76, sp. 25.
Type(s): SYNTYPES MHNG_UNKNOWN, France, common in the Seine.

Unio littoralis — Cuvier (1798), Poiret (1801), Lamarck (1801), Draparnaud (1806), ..., Fischer (1887), Drouët (1889), Drouët (1898), Pallary (1898)
Unio litoralis — Pfeiffer (1821), Menke (1828), Menke (1830), Rossmässler (1854), Küster (1855), Reeve (1865), Woodward (1871), Westerlund (1890)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Mysca (Potomida) littoralis — Swainson (1840)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio (Ponderosi) littoralis — Dupuy (1852)
Unio (Potamida) littoralis — Mörch (1853)
Unio (Lymnium) rhomboideus — Moquin-Tandon (1855)
Unio (Niäa) litoralis — Adams & Adams (1857)
Unio (Lymnium) littoralis — Drouët (1857)
Unio rhomboïdeus — de Joannis (1859)
Unio rhomboidus — Malzine (1867)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (sec. Naïa) littoralis — Paetel (1890)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)
Migranaja littoralis — Hannibal (1912)
Rhombunio littoralis — Haas (1924)
Psilunio littoralis — Germain (1931), Thiele (1934), Van Damme (1984), Mandahl-Barth (1988), Giribet & Wheeler (2002), Giribet & Distel (2003), Campbell et al. (2005), Jeffrey et al. (2016)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969), Falkner et al. (2001), Falkner et al. (2002), Lopes-Lima et al. (2017)
Potomida littoralis — Schütt (1988), Falkner (1994), Nagel et al. (1998), Nagel & Badino (2001), ..., Dai et al. (2024), Jeratthitikul et al. (2024), Wu et al. (2024), Dai et al. (2024)
Psilunio littoralis fellmanni — Daget (1998)
Potamida littoralis — Bába (2000)
Potomida littoralis 1 — Whelan et al. (2011)
Potomida littoralis 2 — Whelan et al. (2011)

Unio fellmanni Deshayes, 1847
Deshayes, 1847, Exploration scientifique de l’Algérie: pl. 108, figs. 8-9; pl. 109, fig. 9; pls. 110-111; pl. 112, figs. 1-4.

Unio fellmanni — Deshayes (1847), Küster (1856)
Unio (Potamida) fellmanni — Mörch (1853)
Unio (Bariosta) fellmanni — Adams & Adams (1857)
Margaron (Unio) fellmani — Lea (1870)
Unio (sec. Naïa) littoralis vr. fellmanni — Paetel (1890)
Unio litoralis — Westerlund (1890)
Unio littoralis var. fellmanni — Pallary (1898)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio rhomboideus var. fellmanni — Pallary (1921)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969), Graf & Cummings (2007)
Psilunio littoralis — Mandahl-Barth (1988)
Potomida littoralis — IUCN (2014)

Unio pianensis Boubée, 1833
Farines in Boubée, 1833, Bull. Hist. nat. France 1: 19.
Farines, 1834, Ann. des Sci. Nat. 2: 118.

Unio pianensis — Boubée (1833), Drouët (1889)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio (Ponderosi) pianensis — Dupuy (1852)
Unio (Lymnium) rhomboideus var. B. pianensis — Moquin-Tandon (1855)
Unio litoralis — Küster (1855), Reeve (1865)
Unio (Lymnium) littoralis var. pianensis — Drouët (1857)
Unio rhomboïdeus var. pianensis — de Joannis (1859)
Unio littoralis var. pianensis — Kobelt (1879)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (sec. Naïa) littoralis vr. pianensis — Paetel (1890)
Unio litoralis var. pianensis — Westerlund (1890)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969), Lopes-Lima et al. (2017)
Potomida littoralis pianensis — Falkner et al. (2001), Falkner et al. (2002)
Potomida littoralis — Araujo et al. (2009), IUCN (2014)

Unio cuneatus Jacquemin, 1835
Jacquemin, 1835, Guide Ror. Arles: 124.
(homonym of Unio cuneatus Swainson, 1823)

Unio cuneatus — Jacquemin (1835), Rossmässler (1854)
Unio (Ponderosi) astierianus — Dupuy (1852)
Unio (Lymnium) rhomboideus var. E cuneatus — Moquin-Tandon (1855)
Unio (Lymnium) littoralis var. cuneatus — Drouët (1857)
Unio rhomboïdeus var. cuneatus — de Joannis (1859)
Margaron (Unio) litoralis — Lea (1870)
Unio (Groupe de l’U. rhomboideus) cuneatus — Locard (1882)
Unio (Simonisiana) astierianus — Locard (1889)
Unio astierianus — Drouët (1889), Westerlund (1890)
Unio (sec. Naïa) littoralis vr. cuneatus — Paetel (1890)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969), Lopes-Lima et al. (2017)
Potomida littoralis cuneata — Falkner et al. (2001), Falkner et al. (2002)
Potomida littoralis — Araujo et al. (2009), IUCN (2014)

Unio brevialis Lamarck, 1819
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 73, sp. 14.
Type(s): LECTOTYPE MNHN_21212, Habite à l’Isle de France.

Unio brevialis — Lamarck (1819), Lea (1829), Sganzin (1841)
Unio littoralis — Lea (1834), Hanley (1843)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio politus — Conrad (1853)
Unio litoralis — Reeve (1865)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis littoralis — Haas (1940)
Caelatura (s.s.) brevialis — Haas (1969)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Graf & Cummings (2009), Araujo et al. (2009)

Unio litoralis var. umbonatus Rossmässler, 1844
Rossmässler, 1844, Icon. Land- und Süssw.-Moll. 2 (6): 27, pl. 56, fig. 754.
Rossmässler, 1854, Icon. Land- und Süssw.-Moll. 3 (1-2): 36, pl. 69, fig. 849.
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798)

Unio litoralis var. umbonatus — Rossmässler (1844)
Unio (Ponderosi) astierianus — Dupuy (1852)
Unio litoralis — Küster (1855)
Unio (Lymnium) littoralis var. umbonatus major — Drouët (1857)
Margaron (Unio) litoralis — Lea (1870)
Unio umbonatus — Kobelt (1888), Westerlund (1890)
Unio (sec. Naïa) littoralis vr. umbonatus — Paetel (1890)
Unio (groupe de l’U. rhomboideus) umbonatus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis umbonatus — Haas (1940)
Potomida littoralis umbonata — Haas (1969)
Potomida littoralis — Araujo et al. (2009), IUCN (2014)
Potomida littoralis littoralis — Lopes-Lima et al. (2017)

Mya crassa Vallot, 1801
Vallot, 1801, Exerc. hist. nat.: 7.

Mya crassa — Vallot (1801)
Unio (Lymnium) rhomboideus — Moquin-Tandon (1855)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio littoralis — Drouët (1889)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Psilunio littoralis — Germain (1931)

Unio granosus Schumacher, 1817
Schumacher, 1817, Essai. Nouv. Syst.: 138, pl. 11, fig. 1.
(homonym of Unio granosa Bruguière, 1792)

Unio granosus — Schumacher (1817)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio litoralis — Reeve (1865)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio litoralis Menke, 1828
‘Lamarck’ of Authors.
Menke, 1828, Syn. Method. Moll.: 64.
Menke, 1830, Syn. Method. Moll.: 107.
Lea, 1836, Synopsis Fam. Naiades: 32.
Lea, 1838, Synopsis Fam. Naiades: 22.
Swainson, 1840, Treat. Malacol.: 282.
Lea, 1852, Synopsis Fam. Naiades: 34.
Rossmässler, 1854, Icon. Land- und Süssw.-Moll. 3 (1-2): 37.
Küster, 1855, Conchyl. Cab. 9(2): 128.
Reeve, 1865, Conch. Icon. 16: pl. 22, sp. 98.
Sowerby, 1868, Conch. Icon. 16: pl. 86, sp. 461.
Lea, 1870, Synopsis Fam. Naiades: 54.
Woodward, 1871, Man. Moll: 433.
Westerlund, 1890, Fauna Paläarct. Binnenconch. 2(7): 52.
(error for Unio littoralis Cuvier, 1798)

Unio litoralis — Menke (1828)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio draparnaldii Deshayes, 1831
Deshayes, 1831, Descr. Coqu. Terr.: 43, pl. 14, fig. 6.
(renamed Unio littoralis var. subtriangularis Drouët, 1898)

Unio draparnaldii — Deshayes (1831)
Unio littoralis — Dupuy (1843)
Unio (Lymnium) rhomboideus var. I draparnaudi — Moquin-Tandon (1855)
Unio (Lymnium) littoralis var. draparnaldi — Drouët (1857)
Unio rhomboïdeus var. draparnaudi — de Joannis (1859)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (sec. Naïa) littoralis vr. draparnaldii — Paetel (1890)
Unio litoralis var. draparnaldi — Westerlund (1890)
Unio littoralis var. subtriangularis — Drouët (1898)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio incurvus Lea, 1831
Lea, 1831, Trans. Amer. Phil. Soc. 4 [O. 1]: 97, pl. 13, fig. 27.
Type(s): HOLOTYPE (MONOTYPY) USNM_85731, Gibralter.

Unio incurvus — Lea (1831)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Unio littoralis — Hanley (1843)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio litoralis — Reeve (1865)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis umbonatus — Haas (1940)
Potomida littoralis umbonata — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio subtetragonus Michaud, 1831
Michaud, 1831, Compl. Hist. Nat. Moll., Draparnaud: 111, pl. 16, fig. 23.

Unio subtetragonus — Michaud (1831)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Unio littoralis — Dupuy (1843)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio (Ponderosi) subtetragonus — Dupuy (1852)
Unio (Lymnium) rhomboideus var. H subtetragonus — Moquin-Tandon (1855)
Unio litoralis — Küster (1855), Reeve (1865)
Unio (Lymnium) littoralis var. subtetragonus — Drouët (1857)
Unio rhomboïdeus var. subtetragonus — de Joannis (1859)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (sec. Naïa) littoralis vr. subtetragonus — Paetel (1890)
Unio litoralis var. subtetragonus — Westerlund (1890)
Unio littoralis var. subtetragonus — Drouët (1898)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)
Unio (Groupe Rhomboïdeana) rhomboideus ve subtetragonus — Caziot (1907)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009), Fauna Europaea (2012)

Unio sinuatus Rossmässler, 1836
‘Lam.’ Rossmässler, 1836, Icon. Land- und Süssw.-Moll. 1 (3): pl. 13, fig. 195.
Rossmässler, 1854, Icon. Land- und Süssw.-Moll. 3 (1-2): pl. 70, fig. 853.
(misidentified reference to Unio sinuata Lamarck, 1819)

Unio sinuatus — Rossmässler (1836), Küster (1855), Drouët (1883), Drouët (1898)
Unio crassissimus — Hanley (1843)
Margaron (Unio) crassus — Lea (1852), Lea (1870)
Unio (Lymnium) sinuatus — Drouët (1857)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Psilunio littoralis — Germain (1931)

Unio littoralis Rossmässler, 1837
Rossmässler, 1837, Icon. Land- und Süssw.-Moll. 1 (5-6): 21, pl. 24, fig. 340.
(reference to Unio littoralis Cuvier, 1798)

Unio littoralis — Rossmässler (1837), Drouët (1898)
Unio (Lymnium) rhomboideus — Moquin-Tandon (1855)
Unio litoralis — Küster (1855)
Unio (Lymnium) littoralis — Drouët (1857)

Unio rotundatus Mauduyt, 1839
Mauduyt, 1839, Tableau Indic. Moll. Vienne: 9, pl. 1, fig. 3-4.
(homonym of Unio rotundata Lamarck, 1819; renamed Unio mauduyti Germain, 1897)

Unio rotundatus — Mauduyt (1839), Westerlund (1890), Baichère (1890), Rochebrune (1903)
Unio (Batavi) moulinsianus — Dupuy (1852)
Unio (Lymnium) batavus — Moquin-Tandon (1855)
Unio (Groupe de l’U. rhomboideus) rotundatus — Locard (1882), Locard (1893)
Unio (Simonisiana) rotundatus — Locard (1889)
Unio (groupe de l’U. rhomboideus) rotundatus — Dumas (1895)
Unio (Simonisiana) mauduyti — Germain (1897)
Unio (sec. Lymnium) batavus — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) mauduyti — Germain (1904)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Mysca (Potomida) corrugata Swainson, 1840
Swainson, 1840, Treat. Malacol.: 268-269, fig. 51; 281-282, fig. 57; 379.

Mysca (Potomida) corrugata — Swainson (1840)
Margaron (Unio) corrugatus — Lea (1852), Lea (1870)
Parreysia (s.s.) corrugata — Simpson (1900), Simpson (1914), Preston (1915)
Potomida littoralis semirugata — Ellis (1946)
Potomida (s.s.) littoralis semirugata — Haas (1969)
Potomida littoralis — Graf & Cummings (2007), Lopes-Lima et al. (2021), Graf & Cummings (2021)

Unio barraudii Bonhomme, 1840
Bonhomme, 1840, Mém. Aveyron 2: 430.

Unio barraudii — Bonhomme (1840)
Unio (Ponderosi) barraudii — Dupuy (1852)
Unio (Lymnium) rhomboideus var. C barraudii — Moquin-Tandon (1855)
Unio (Lymnium) littoralis var. barraudii — Drouët (1857)
Margaron (Unio) crassus — Lea (1870)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (sec. Naïa) littoralis vr. barraudi — Paetel (1890)
Unio litoralis var. barraudii — Westerlund (1890)
Unio (groupe de l’U. rhomboideus) rhomboideus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio littoralis var. minor Rossmässler, 1842
Rossmässler, 1842, Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, figs. 743. [in part]
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798; homonym of Unio margaritifer var. minor Rossmässler, 1835)
Type(s): TYPE SMF_4431, Carcassonne, S. Frankreich.

Unio littoralis var. minor — Rossmässler (1842)
Unio (Lymnium) rhomboideus var. D minor — Moquin-Tandon (1855)
Unio litoralis — Küster (1855), Westerlund (1890)
Unio (Lymnium) littoralis var. minor — Drouët (1857)
Unio rhomboïdeus var. minor — de Joannis (1859)
Unio (sec. Naïa) littoralis vr. minor — Paetel (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) rhomboideus minor — Germain (1904)
Unio (Groupe Rhomboïdeana) rhomboideus ve minor — Caziot (1907)

Unio bigerrensis Millet, 1843
Millet, 1843, Mag. Zool.: 3, pl. 64, fig. 2.
‘Millet’ Locard, 1882, Prodr. Malac. Franç. 1: 284 [as ‘bigorriensis’].
(renamed Unio bigorriensis Locard, 1882)

Unio bigerrensis — Millet (1843), Drouët (1898)
Unio (Ponderosi) bigerrensis — Dupuy (1852)
Unio (Lymnium) rhomboideus var. F bigerrensis — Moquin-Tandon (1855)
Unio (Lymnium) littoralis var. bigerrensis — Drouët (1857)
Unio bigorrensis — Küster (1861)
Unio (Groupe de l’U. rhomboideus) bigorriensis — Locard (1882)
Unio (Rhomboidiana) bigorriensis — Locard (1889)
Unio (sec. Naïa) littoralis vr. bigerriensis — Paetel (1890)
Unio litoralis var. bigorriensis — Westerlund (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio littoralis var. elongata Dupuy, 1843
Dupuy, 1843, Essai Moll. Terr. Fluv. du Gers: 86.
Dupuy, 1852, Hist. Natur. Moll. France (6): pl. 24, fig. 5.
(homonym of Unio elongata Lamarck, 1819)

Unio littoralis var. elongata — Dupuy (1843)
Mysca (Potomida) elongata — Swainson (1840)
Unio litoralis var. elongatus — Rossmässler (1844), Westerlund (1890)
Unio (Lymnium) rhomboideus var. G elongatus — Moquin-Tandon (1855)
Unio (Lymnium) littoralis var. elongata — Drouët (1857)
Unio rhomboïdeus var. elongatus — de Joannis (1859)
Unio (sec. Naïa) littoralis vr. elongatus — Paetel (1890)
Unio (Rhomboïdiana) rhomboideus elongata — Germain (1904)
Unio (Groupe Rhomboïdeana) rhomboideus ve elongata — Caziot (1907)

Unio litoralis var. elongatus Rossmässler, 1844
Rossmässler, 1844, Icon. Land- und Süssw.-Moll. 2 (6): 27, pl. 56, fig. 752.
(reference to Unio littoralis var. elongata Dupuy, 1843)
Type(s): LECTOTYPE SMF_4434A, Vic-de-Bigorre [Vic-en-Bigorre].

Unio litoralis var. elongatus — Rossmässler (1844)
Unio (Lymnium) littoralis var. elongata — Drouët (1857)

Unio littoralis Morelet, 1845
Morelet, 1845, Moll. Terr. Fluv. Portugal: pl. 14, fig. 1.
(reference to Unio littoralis Cuvier, 1798)

Unio littoralis — Morelet (1845)
Unio (groupe de l’U. rhomboideus) rathymus — Locard (1899)

Unio astierianus Dupuy, 1849
Dupuy, 1849, Cat. Extramar. Galliae Test.: no. 320.
Dupuy, 1851, Hist. Natur. Moll. France (5): pl. 23, figs. 9a-d.
Dupuy, 1852, Hist. Natur. Moll. France (6): 636.

Unio astierianus — Dupuy (1849), Drouët (1889), Westerlund (1890)
Unio (Ponderosi) astierianus — Dupuy (1852)
Unio (Lymnium) rhomboideus var. E cuneatus — Moquin-Tandon (1855)
Unio (Lymnium) littoralis var. cuneatus — Drouët (1857)
Unio astieranus — Sowerby (1868), Paetel (1890)
Margaron (Unio) litoralis — Lea (1870)
Unio (Simonisiana) astierianus — Locard (1889)
Unio (Groupe de l’U. rhomboideus) astierianus — Locard (1893)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio littoralis var. compressa Gassies, 1849
Gassies, 1849, Moll. Agenais: 198. [nomen nudum]
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798)

Unio littoralis var. compressa — Gassies (1849)
Unio (Lymnium) littoralis var. irregularis — Drouët (1857)

Unio moulinsianus Dupuy, 1851
Dupuy, 1851, Hist. Natur. Moll. France (5): pl. 24, figs. 10a-b.
Dupuy, 1852, Hist. Natur. Moll. France (6): 640.

Unio moulinsianus — Dupuy (1851), Drouët (1889)
Unio (Batavi) moulinsianus — Dupuy (1852)
Unio (Lymnium) batavus var. J moulinsianus — Moquin-Tandon (1855)
Margaron (Unio) batavus — Lea (1870)
Unio (Rhomboidiana) moulinsianus — Locard (1889)
Unio (sec. Hyridella) batavus vr. moulinsianus — Paetel (1890)
Unio litoralis var. moulinsianus — Westerlund (1890)
Unio (Groupe de l’U. rhomboideus) moulinsianus — Locard (1893)
Unio (groupe de l’U. rhomboideus) moulinsianus — Locard (1899)
Unio (sec. Lymnium) batavus — Simpson (1900), Simpson (1914)
Unio (Groupe Rhomboïdeana) moulinsianus — Caziot (1907)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio asterianus Lea, 1852
‘Dupuy’ of Authors.
Lea, 1852, Synopsis Fam. Naiades: 39.
Germain, 1931, Faune de France 22: 720.
(error for Unio astierianus Dupuy, 1849)

Unio asterianus — Lea (1852)

Unio bigorrensis Lea, 1852
‘Millet’ Lea, 1852, Synopsis Fam. Naiades: 39.
‘Millet’ Küster, 1861, Conchyl. Cab. 9(2): 230.
‘Millet’ Lea, 1870, Synopsis Fam. Naiades: 63.
‘Locard’ Simpson, 1900, Proc. U.S. Nat. Mus. 22: 692.
(error for Unio bigerrensis Millet, 1843)

Unio bigorrensis — Lea (1852)

Unio cuneatus Rossmässler, 1854
‘Jacq.’ Rossmässler, 1854, Icon. Land- und Süssw.-Moll. 3 (1-2): 37, pl. 69, fig. 851.
(reference to Unio cuneatus Jacquemin, 1835)

Unio cuneatus — Rossmässler (1854)
Unio (Lymnium) littoralis var. cuneatus — Drouët (1857)
Unio astieranus — Sowerby (1868)
Unio astierianus — Westerlund (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio batavus Moquin-Tandon, 1855
Moquin-Tandon, 1855, Hist. Natur. Moll. France 2: 573.
(misidentified reference to Mya batava Maton & Rackett, 1807)

Unio batavus — Moquin-Tandon (1855)
Unio (Groupe de l’U. rhomboideus) rotundatus — Locard (1882)
Unio (Simonisiana) rotundatus — Locard (1889)
Unio (Simonisiana) mauduyti — Germain (1897)
Unio (Rhomboïdiana) mauduyti — Germain (1904)

Unio draparnaudi Moquin-Tandon, 1855
‘Deshayes’ of Authors.
Moquin-Tandon, 1855, Hist. Natur. Moll. France 2: 569.
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 283.
(error for Unio draparnaldii Deshayes, 1831)

Unio draparnaudi — Moquin-Tandon (1855)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)

Unio rhomboideus Moquin-Tandon, 1855
Schröter, 1779, Gesch. Flußconch.: 186, pl. 2, fig. 3 [as ‘Mya rhomboidea’]. [non-binomial]
Moquin-Tandon, 1855, Hist. Natur. Moll. France 2: 568, pl. 48, figs. 4-9; pl. 49, figs. 1-2.

Unio rhomboideus — Moquin-Tandon (1855), Colbeau (1868), Baichère (1890), Rochebrune (1903)
Mya rhomboidea — Dillwyn (1817)
Margarita (Unio) litoralis — Lea (1836), Lea (1838)
Unio littoralis — Hanley (1843), Gassies (1849), Drouët (1889), Drouët (1898), Pallary (1898)
Margaron (Unio) litoralis — Lea (1852), Lea (1870)
Unio (Potamida) littoralis — Mörch (1853)
Unio (Lymnium) rhomboideus — Moquin-Tandon (1855)
Unio (Lymnium) littoralis — Drouët (1857)
Unio rhomboïdeus — de Joannis (1859)
Unio litoralis — Reeve (1865), Westerlund (1890)
Unio rhomboidus — Malzine (1867)
Unio (Groupe de l’U. rhomboideus) rhomboideus — Locard (1882), Locard (1893)
Unio (Rhomboidiana) rhomboideus — Locard (1889)
Unio (sec. Naïa) littoralis vr. rhomboider — Paetel (1890)
Unio (Rhomboideana) rhomboideus — Fagot (1892)
Unio (groupe de l’U. rhomboideus) rhomboideus — Dumas (1895), Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)
Unio (Groupe Rhomboïdeana) rhomboideus — Caziot (1907)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009), Fauna Europaea (2012)

Unio littoralis Drouët, 1857
Drouët, 1857, Étud. Naïades. France, Unio: pl. 3, fig. 2. [in part]
(reference to Unio littoralis Cuvier, 1798)

Unio littoralis — Drouët (1857)
Unio (Rhomboidiana) moulinsianus — Locard (1889)

Unio littoralis var. complanata Drouët, 1857
Drouët, 1857, Étud. Naïades. France, Unio: 215, 218.
(homonym of Mya complanata Lightfoot, 1786; intro'd as intra-sp. of Unio littoralis Cuvier, 1798)

Unio littoralis var. complanata — Drouët (1857)
Unio (Lymnium) littoralis var. complanata — Drouët (1857)

Unio littoralis var. irregularis Drouët, 1857
Drouët, 1857, Étud. Naïades. France, Unio: 218, 215.
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798)

Unio littoralis var. irregularis — Drouët (1857)
Unio (Lymnium) littoralis var. irregularis — Drouët (1857)

Unio rhomboideus var. truncatulus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 283, pl. 8, fig. 5.
(intro'd as intra-sp. of Unio rhomboideus Moquin-Tandon, 1855)

Unio rhomboideus var. truncatulus — de Joannis (1859)
Unio rhomboïdeus var. truncatulus — de Joannis (1859)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)

Unio litoralis Mousson, 1861
Mousson, 1861, Vjschr. naturf. Ges. Zürich: ??.
(error for Unio littoralis Cuvier, 1798; reference to Unio littoralis Cuvier, 1798)

Unio litoralis — Mousson (1861)
Margaron (Unio) litoralis — Lea (1870)
Potomida littoralis semirugata — Schütt (1983)

Unio unduliferus Küster, 1861
Küster, 1861, Conchyl. Cab. 9(2): 162, pl. 46, fig. 4.

Unio unduliferus — Küster (1861)
Psilunio littoralis littoralis — Haas (1940)
Psilunio littoralis fellmanni — Haas (1940)
Potomida littoralis fellmanni — Haas (1969)

Unio rhomboideus Mousson, 1862
Mousson, 1862, Coq. terr. et fluv. rec. par Roth en Palestine: 64.
(reference to Unio rhomboideus Moquin-Tandon, 1855)

Unio rhomboideus — Mousson (1862)
Unio (Groupe de l‘Unio rothi) rothi — Locard (1883)

Unio subreniformis Bourguignat, 1863
Bourguignat, 1863, Moll. Nouv. Litig. Peu Connus: 138, pl. 34, figs. 4-6.

Unio subreniformis — Bourguignat (1863), Kobelt (1876), Westerlund (1890), Fagot (1892)
Margaron (Unio) pictorum — Lea (1870)
Unio (sec. Naïa) littoralis vr. subreniformis — Paetel (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009), Fauna Europaea (2012)

Unio batavus Bourguignat, 1864
Bourguignat, 1864, Mal. Alg. 2: 286, pl. 19, figs. 9-11; pl. 20, figs. 1-4.
(misidentified reference to Mya batava Maton & Rackett, 1807)

Unio batavus — Bourguignat (1864)
Unio (sec. Lymnium) batavus — Simpson (1900), Simpson (1914)
Psilunio littoralis fellmanni — Van Damme (1984)
Unio elongatulus durieui — Daget (1998)

Unio rhomboideus Bourguignat, 1864
‘Moquin-Tandon’ Bourguignat, 1864, Mal. Alg. 2: 284, pl. 18.
(reference to Unio rhomboideus Moquin-Tandon, 1855)

Unio rhomboideus — Bourguignat (1864), Pallary (1921)
Psilunio littoralis fellmanni — Van Damme (1984), Daget (1998)

Unio rhomboideus var. minor Bourguignat, 1864
Bourguignat, 1864, Mal. Alg. 2: 286, pl. 18, figs. 1-3.
(misidentified reference to Unio margaritifer var. minor Rossmässler, 1835)

Unio rhomboideus var. minor — Bourguignat (1864)
Psilunio littoralis fellmanni — Daget (1998)

Unio rhomboideus var. radiata Bourguignat, 1864
Bourguignat, 1864, Mal. Alg. 2: 285, pl. 18, figs. 1-10.
(homonym of Unio (Elliptio) viridis var. radiata Rafinesque, 1820)

Unio rhomboideus var. radiata — Bourguignat (1864)
Unio (Rhomboïdiana) rhomboideus radiata — Germain (1904)
Psilunio littoralis fellmanni — Daget (1998)

Unio ater Reeve, 1865
‘Nilsson’ Reeve, 1865, Conch. Icon. 16: pl. 21, fig. 91.
(misidentified reference to Unio ater Nilsson, 1822)

Unio ater — Reeve (1865)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio crassus Reeve, 1865
Vallot 1801 of Authors.
‘Retz.’ Reeve, 1865, Conch. Icon. 16: pl. 22, sp. 98 [as syn. under U. littoralis].
(misidentified reference to Unio crassus Retzius, 1788)

Unio crassus — Reeve (1865)
Unio littoralis — Hanley (1843)
Unio litoralis — Reeve (1865), Westerlund (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio maccarthyanus Bourguignat, 1866
Bourguignat, 1866, Moll. Nouv. Litig. Peu Connus: 220, pl. 34, figs. 8-10.

Unio maccarthyanus — Bourguignat (1866)
Margaron (Unio) batavus — Lea (1870)
Unio mac carthyanus — Kobelt (1886)
Unio mac-carthyanus — Locard (1889), Westerlund (1890)
Unio (groupe de l’U. rhomboideus) mac-carthianus — Locard (1899)
Unio (sec. Lymnium) ravoisieri — Simpson (1900)
Unio (sec. Lymnium) turtoni var. moreleti — Simpson (1914)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio valentianus Sowerby, 1866
Sowerby, 1866, Conch. Icon. 16: pl. 41, sp. 225.

Unio valentianus — Sowerby (1866)
Unio valentinus — Sowerby (1866)
Margaron (Unio) litoralis — Lea (1870)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio rhomboidus Malzine, 1867
‘Schroter’ Malzine, 1867, Essai faun. malac. Belg.: 32.
(error for Unio rhomboideus Moquin-Tandon, 1855)

Unio rhomboidus — Malzine (1867)

Unio astieranus Sowerby, 1868
‘Dupuy’ of Authors.
Sowerby, 1868, Conch. Icon. 16: pl. 86, sp. 461.
Paetel, 1890, Cat. Conch.-Samml. 3: 145.
(error for Unio astierianus Dupuy, 1849)

Unio astieranus — Sowerby (1868)
Unio (sec. Lymnium) littoralis — Simpson (1900)

Unio mauritanicus Bourguignat, 1868
Bourguignat, 1868, Moll. Nouv. Litig. Peu Connus: 317, pl. 45, figs. 1-5.

Unio mauritanicus — Bourguignat (1868), Kobelt (1886), Locard (1889), Westerlund (1890)
Unio (sec. Naïa) littoralis vr. mauritanicus — Paetel (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio rhomboideus — Pallary (1921)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio hippopotami Bourguignat, 1869
Bourguignat, 1869, Cat. Moll. Terr. Fluv. Paris Quaternaire: 21, pl. 3, figs. 52-54.

Unio hippopotami — Bourguignat (1869)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Margaron (Unio) fellmani Lea, 1870
‘Desh.’ Lea, 1870, Synopsis Fam. Naiades: 46.
(error for Unio fellmanni Deshayes, 1847)

Margaron (Unio) fellmani — Lea (1870)

Unio ksibianus Mousson, 1873
Mousson, 1873, Malak. Blatt. 21: 156.

Unio ksibianus — Mousson (1873), Kobelt (1876), Locard (1889), Westerlund (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio rhomboideus — Pallary (1921)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio marisgalilaei Lortet, 1880
‘Locard’ Lortet, 1880, C. R. Acad. Sci. 91: 502 [as ‘maris-galilæi’]. [nomen nudum]

Unio marisgalilaei — Lortet (1880)
Unio maris galilæi — Lortet (1880)
Unio (Groupe de l‘Unio rothi) galilaei — Locard (1883)
Unio galilaei — Westerlund (1890)
Potomida littoralis semirugata — Schütt (1983)

Unio bigorriensis Locard, 1882
‘Millet’ Locard, 1882, Prodr. Malac. Franç. 1: 284.
‘Millet’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 125 [19].
(new name for Unio bigerrensis Millet, 1843)

Unio bigorriensis — Locard (1882)
Unio littoralis — Gassies (1849)
Unio (Groupe de l’U. rhomboideus) bigorriensis — Locard (1882), Locard (1893)
Unio (Rhomboidiana) bigorriensis — Locard (1889)
Unio litoralis var. bigorriensis — Westerlund (1890)
Unio (Rhomboideana) bigorriensis — Fagot (1892)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (Groupe Rhomboïdeana) bigorriensis — Caziot (1907)
Psilunio littoralis — Germain (1931)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio rathymus Locard, 1882
Bourguignat in Locard, 1882, Prodr. Malac. Franç. 1: 284, 354.
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 125 [19], 184 [78].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 152, fig. 166.
Bourguignat in Locard, 1899, Conchyliol. Portug.: 215.
Type(s): IDIOTYPE MNHN_22482, la Seine près Paris.

Unio rathymus — Locard (1882), Westerlund (1890), Rochebrune (1903)
Unio (Groupe de l’U. rhomboideus) rathymus — Locard (1882), Locard (1893)
Unio (Rhomboidiana) rathymus — Locard (1889)
Unio (groupe de l’U. rhomboideus) rathymus — Locard (1899)
Unio (Rhomboïdiana) rathymus — Germain (1904)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio jolyi Kobelt, 1886
‘(Bourg.?)’ Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 22, pl. 41, fig. 256.

Unio jolyi — Kobelt (1886), Locard (1889), Westerlund (1890)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio letourneuxi Kobelt, 1886
Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 3, pl. 32, fig. 227.
(misidentified reference to Unio letourneuxi Bourguignat, 1864)

Unio letourneuxi — Kobelt (1886)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio maccarthyanus Kobelt, 1886
Kobelt, 1886, Icon. Land- und Süssw.-Moll. 2: 5, pl. 33, fig. 229 [as ‘mac carthyanus’].
(reference to Unio maccarthyanus Bourguignat, 1866)

Unio maccarthyanus — Kobelt (1886)
Unio (groupe de l’U. rhomboideus) mac-carthianus — Locard (1899)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio rouirei Letourneux & Bourguignat, 1887
Letourneux & Bourguignat, 1887, Prodr. Malacol. Terr. Fluv. Tunisie: 164.

Unio rouirei — Letourneux & Bourguignat (1887), Westerlund (1890)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio zenaticus Letourneux & Bourguignat, 1887
Letourneux & Bourguignat, 1887, Prodr. Malacol. Terr. Fluv. Tunisie: 163.

Unio zenaticus — Letourneux & Bourguignat (1887), Westerlund (1890)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio calderoni Kobelt, 1888
Kobelt, 1888, Icon. Land- und Süssw.-Moll. 3: 54, pl. 88, fig. 494.

Unio calderoni — Kobelt (1888), Westerlund (1890)
Psilunio littoralis umbonatus — Haas (1940)
Potomida littoralis umbonata — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio gandiensis Drouët, 1888
Drouët, 1888, J. de Conch. 36: 103.
Type(s): SYNTYPE SMF_4427, A.d. Serpis b. Gandia, Prov. Valencia, Spanien.

Unio gandiensis — Drouët (1888), Kobelt (1896)
Unio gaudiensis — Westerlund (1890)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio hispalensis Kobelt, 1888
Kobelt, 1888, Icon. Land- und Süssw.-Moll. 3: 53, pl. 88, fig. 492.

Unio hispalensis — Kobelt (1888), Westerlund (1890)
Psilunio littoralis umbonatus — Haas (1940)
Potomida littoralis umbonata — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio littoralis var. pianensis Kobelt, 1888
Kobelt, 1888, Icon. Land- und Süssw.-Moll. 4: 43, pl. 163, fig. 1648.
(reference to Unio pianensis Boubée, 1833)

Unio littoralis var. pianensis — Kobelt (1888)
Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)

Unio bagnolasicus Locard, 1889
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio bagnolasicus — Locard (1889)

Unio bouthyi Locard, 1889
‘Pechaud’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio bouthyi — Locard (1889)

Unio cossonianus Locard, 1889
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio cossonianus — Locard (1889)

Unio odontopachius Locard, 1889
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio odontopachius — Locard (1889)

Unio pacomei Locard, 1889
Bourguignat in Locard, 1889, Contr. Faune Malacol. Franc. 13: 126 [20], 185 [79].
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 154.
Type(s): SYNTYPE MNHN_22440, Couzon (Rhône).

Unio pacomei — Locard (1889), Westerlund (1890)
Unio (Simonisiana) pacomei — Locard (1889)
Unio (Groupe de l’U. rhomboideus) pacomei — Locard (1893)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio seguyanus Locard, 1889
‘Pechaud’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio seguyanus — Locard (1889)

Unio valeryi Locard, 1889
‘Bourguignat’ Locard, 1889, Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio valeryi — Locard (1889)

Unio bigerriensis Paetel, 1890
‘Millet’ of Authors.
Paetel, 1890, Cat. Conch.-Samml. 3: 146, 157.
Germain, 1931, Faune de France 22: 720.
(error for Unio bigerrensis Millet, 1843)

Unio bigerriensis — Paetel (1890)

Unio cuncetus Westerlund, 1890
‘Jacquemin’ Westerlund, 1890, Fauna Paläarct. Binnenconch. 2(7): 54.
(error for Unio cuneatus Jacquemin, 1835)

Unio cuncetus — Westerlund (1890)

Unio gaudiensis Westerlund, 1890
‘Drouët’ Westerlund, 1890, Fauna Paläarct. Binnenconch. 2(7): 55.
(error for Unio gandiensis Drouët, 1888)

Unio gaudiensis — Westerlund (1890)

Unio calderoni var. salvadori Westerlund, 1892
Westerlund, 1892, Nachr. Bl. Dtsch. Malak. Ges. 24: 201.
(intro'd as intra-sp. of Unio calderoni Kobelt, 1888)

Unio calderoni var. salvadori — Westerlund (1892)
Psilunio littoralis umbonatus — Haas (1940)
Potomida littoralis umbonata — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio circinatus Drouët, 1893
Drouët, 1893, J. de Conch. 41: 167.
Type(s): SYNTYPE SMF_4428, Aus dem Jucar b. Algemesi, Prov. Valencia, Span.

Unio circinatus — Drouët (1893), Kobelt (1896)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio circulus Locard, 1893
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 153.
(homonym of Unio circulus Lea, 1829)

Unio circulus — Locard (1893)
Unio (Groupe de l’U. rhomboideus) circulus — Locard (1893)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio rhysopygus Drouët, 1893
Drouët, 1893, J. de Conch. 41: 168.

Unio rhysopygus — Drouët (1893), Kobelt (1903)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio spehaericus Locard, 1893
Locard, 1893, Coqu. Eau Douce Saumâtre France: 153.
(incorrect original spelling of Unio sphaericus Locard, 1893)

Unio spehaericus — Locard (1893)

Unio sphaericus Locard, 1893
‘Bourguignat’ Locard, 1893, Coqu. Eau Douce Saumâtre France: 153 [as ‘sphæricus’].
(homonym of Unio sphaericus Lea, 1868; correct name for Unio spehaericus Locard, 1893)
Type(s): IDIOTYPE MNHN_22552, La Saône à Collonges (Rhône).

Unio sphaericus — Locard (1893)
Unio (Groupe de l’U. rhomboideus) sphæricus — Locard (1893)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio simonis Kobelt & Rolle, 1895
Kobelt & Rolle, 1895, Iconogr. Land-Süßw.-Moll., Supplement 1 (1-4): 18, pl. 3, figs. 1-3.
(misidentified reference to Unio simonis Tristram, 1865)

Unio simonis — Kobelt & Rolle (1895)
Unio (sec. Lymnium) semirugatus — Simpson (1900)
Potomida littoralis semirugata — Schütt (1983)

Unio mauduyti Germain, 1897
Germain, 1897, Bull. Soc. Sci. Nat. Rouen (1897): 72.
Germain, 1904, Bull. Soc. Sci. Nat. Ouest France 4: 254 [16].
(new name for Unio rotundatus Mauduyt, 1839)

Unio mauduyti — Germain (1897)
Unio (Simonisiana) mauduyti — Germain (1897)
Unio (Rhomboïdiana) mauduyti — Germain (1904)
Psilunio littoralis — Germain (1931)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio littoralis var. bucheti Pallary, 1898
Pallary, 1898, J. de Conch. 46: 151.
Pallary, 1921, J. de Conch. 66: 215 [as ‘Unio rhomboideus var. bucheti’].
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798)

Unio littoralis var. bucheti — Pallary (1898)
Unio rhomboideus var. bucheti — Pallary (1921)
Psilunio littoralis fellmanni — Haas (1940), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio littoralis var. incrassatus Drouët, 1898
Drouët, 1898, Mém. Acad. Sci. Dijon ??: 85.
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798; homonym of Unio incrassatus Lea, 1840)

Unio littoralis var. incrassatus — Drouët (1898)

Unio littoralis var. subtriangularis Drouët, 1898
Drouët, 1898, Mém. Acad. Sci. Dijon ??: 85.
(new name for Unio draparnaldii Deshayes, 1831)

Unio littoralis var. subtriangularis — Drouët (1898)

Unio maccarthianus Locard, 1899
Locard, 1899, Conchyliol. Portug.: 215 [as ‘mac-carthianus’].
(error for Unio maccarthyanus Bourguignat, 1866)

Unio maccarthianus — Locard (1899)

Unio ovuliformis Locard, 1899
Locard, 1899, Conchyliol. Portug.: 216.

Unio ovuliformis — Locard (1899)
Unio (groupe de l’U. rhomboideus) ovuliformis — Locard (1899)
Psilunio littoralis littoralis — Haas (1940)

Unio barrandii Simpson, 1900
‘Dupuy’ Simpson, 1900, Proc. U.S. Nat. Mus. 22: 692.
‘Dupuy’ Simpson, 1914, Descr. Cat. Naiades: 555.
(error for Unio barraudii Bonhomme, 1840)

Unio barrandii — Simpson (1900)

Unio valentinus Simpson, 1900
‘Sowerby’ Simpson, 1900, Proc. U.S. Nat. Mus. 22: 692.
‘Sowerby’ Simpson, 1914, Descr. Cat. Naiades: 555.
(error for Unio valentianus Sowerby, 1866)

Unio valentinus — Simpson (1900)

Unio littoralis var. pequignoti Pallary, 1901
Pallary, 1901, Mém. Soc. Géol. France, Paléo. 22: 187, pl. 4, fig. 1.
Type(s): HOLOTYPE MNHN_MP_0080, Pleistocene de la Macta, Algerie.

Unio littoralis var. pequignoti — Pallary (1901)
Psilunio littoralis fellmanni — Daget (1998)

Unio littoralis taginus Kobelt, 1903
Kobelt, 1903, Icon. Land- und Süssw.-Moll. 10: 28, pl. 279, fig. 1795.
(intro'd as intra-sp. of Unio littoralis Cuvier, 1798)
Type(s): TYPE SMF_4425, A.d. Tajo b. Toledo.

Unio littoralis taginus — Kobelt (1903)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio kinkelini Haas, 1908
Haas, 1908, Nachr. Bl. Dtsch. Malak. Ges. 40: 177.

Unio kinkelini — Haas (1908)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio marteli Pallary, 1918
Pallary, 1918, Bull. Soc. Hist. Nat. Afr. Nord., Alger 9: 151.
Type(s): SYNTYPES BMNH_1937-12-30-13036-13037, Fez.

Unio marteli — Pallary (1918)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)
Potomida littoralis — Graf & Cummings (2011)

Unio batavus catalonicus Bofill & Haas, 1920
Haas in Bofill & Haas, 1920, Mus. Cienc. Nat. Barcelona 3: 291, 363, pl. 3, figs. 19-22.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)
Type(s): TYPE SMF_3972, Rio Sio b. Balaguer, Prov. Lerida, Spanien.

Unio batavus catalonicus — Bofill & Haas (1920)
Psilunio littoralis littoralis — Haas (1940)
Potomida littoralis littoralis — Haas (1969)
Potomida littoralis — Araujo et al. (2009)

Unio rhomboideus var. minor Pallary, 1921
Pallary, 1921, J. de Conch. 66: 215.
(homonym of Unio margaritifer var. minor Rossmässler, 1835; intro'd as intra-sp. of Unio rhomboideus Bourguignat, 1864)

Unio rhomboideus var. minor — Pallary (1921)

Rhombunio asananus Pallary, 1928
Pallary, 1928, J. de Conch. 72: 20, pl. 3, figs. 1-2.

Rhombunio asananus — Pallary (1928)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Potomida littoralis fellmanni — Haas (1969)

Unio (Psilunio) rothi var. rotundata Pallary, 1939
Pallary, 1939, Mém. Inst. Égypte 39: 119.
(homonym of Unio rotundata Lamarck, 1819; intro'd as intra-sp. of Unio rothi Bourguignat, 1863)

Unio (Psilunio) rothi var. rotundata — Pallary (1939)

Unio martelli Haas, 1969
‘Pallary’ of Authors.
Haas, 1969, Das Tierreich 88: 276.
Van Damme, 1984, Freshw. Moll. N. Africa (25): 59.
Daget, 1998, Cat. Bivalves Africains: 85.
Graf & Cummings, 2011, Hydrobiologia 678: [3].
(error for Unio marteli Pallary, 1918)

Unio martelli — Haas (1969)

Unio mauretanicus Van Damme, 1984
Van Damme, 1984, Freshw. Moll. N. Africa (25): 59.
(error for Unio mauritanicus Bourguignat, 1868)

Unio mauretanicus — Van Damme (1984)
Psilunio littoralis fellmanni — Daget (1998)

Unio rhysopigus Araujo et al., 2009
‘Drouet’ Araujo et al., 2009, Iberus 27(2): 29.
(error for Unio rhysopygus Drouët, 1893)

Unio rhysopigus — Araujo et al. (2009)

Taxonomic History (since 1900)

Unio (sec. Lymnium) littoralis — Simpson (1900), Simpson (1914)
Unio (sec. Lymnium) batavus — Simpson (1900), Simpson (1914)
Parreysia (s.s.) corrugata — Simpson (1900), Simpson (1914), Preston (1915)
Unio (sec. Lymnium) ravoisieri — Simpson (1900)
Unio (sec. Lymnium) semirugatus — Simpson (1900)
Unio barrandii — Simpson (1900)
Unio valentinus — Simpson (1900)
Unio littoralis var. pequignoti — Pallary (1901)
Unio rotundatus — Rochebrune (1903)
Unio rhomboideus — Rochebrune (1903), Pallary (1921)
Unio rathymus — Rochebrune (1903)
Unio rhysopygus — Kobelt (1903)
Unio littoralis taginus — Kobelt (1903)
Unio (Rhomboïdiana) rhomboideus — Germain (1904)
Unio (Rhomboïdiana) mauduyti — Germain (1904)
Unio (Rhomboïdiana) rhomboideus minor — Germain (1904)
Unio (Rhomboïdiana) rhomboideus elongata — Germain (1904)
Unio (Rhomboïdiana) rhomboideus radiata — Germain (1904)
Unio (Rhomboïdiana) rathymus — Germain (1904)
Unio (Groupe Rhomboïdeana) rhomboideus ve subtetragonus — Caziot (1907)
Unio (Groupe Rhomboïdeana) rhomboideus ve minor — Caziot (1907)
Unio (Groupe Rhomboïdeana) rhomboideus ve elongata — Caziot (1907)
Unio (Groupe Rhomboïdeana) moulinsianus — Caziot (1907)
Unio (Groupe Rhomboïdeana) rhomboideus — Caziot (1907)
Unio (Groupe Rhomboïdeana) bigorriensis — Caziot (1907)
Unio kinkelini — Haas (1908)
Migranaja littoralis — Hannibal (1912)
Unio (sec. Lymnium) turtoni var. moreleti — Simpson (1914)
Unio marteli — Pallary (1918)
Unio batavus catalonicus — Bofill & Haas (1920)
Unio rhomboideus var. fellmanni — Pallary (1921)
Unio rhomboideus var. bucheti — Pallary (1921)
Unio rhomboideus var. minor — Pallary (1921)
Rhombunio littoralis — Haas (1924)
Rhombunio asananus — Pallary (1928)
Psilunio littoralis — Germain (1931), Thiele (1934), Van Damme (1984), Mandahl-Barth (1988), Giribet & Wheeler (2002), Giribet & Distel (2003), Campbell et al. (2005), Jeffrey et al. (2016)
Unio (Psilunio) rothi var. rotundata — Pallary (1939)
Psilunio littoralis littoralis — Haas (1940)
Psilunio littoralis fellmanni — Haas (1940), Van Damme (1984), Daget (1998)
Psilunio littoralis umbonatus — Haas (1940)
Potomida littoralis semirugata — Ellis (1946), Schütt (1983)
Potomida littoralis littoralis — Haas (1969), Falkner et al. (2001), Falkner et al. (2002), Lopes-Lima et al. (2017)
Caelatura (s.s.) brevialis — Haas (1969)
Potomida littoralis umbonata — Haas (1969)
Potomida (s.s.) littoralis semirugata — Haas (1969)
Potomida littoralis fellmanni — Haas (1969), Graf & Cummings (2007)
Unio martelli — Haas (1969)
Unio mauretanicus — Van Damme (1984)
Potomida littoralis — Schütt (1988), Falkner (1994), Nagel et al. (1998), Nagel & Badino (2001), ..., Dai et al. (2024), Jeratthitikul et al. (2024), Wu et al. (2024), Dai et al. (2024)
Unio elongatulus durieui — Daget (1998)
Potamida littoralis — Bába (2000)
Potomida littoralis pianensis — Falkner et al. (2001), Falkner et al. (2002)
Potomida littoralis cuneata — Falkner et al. (2001), Falkner et al. (2002)
Unio rhysopigus — Araujo et al. (2009)
Potomida littoralis 1 — Whelan et al. (2011)
Potomida littoralis 2 — Whelan et al. (2011)