Unio contradens Lea, 1838
Lea, 1836, Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838, Trans. Amer. Phil. Soc. 6 [O. 2]: 75, pl. 18, fig. 58.
Type(s): HOLOTYPE USNM_85185, [Java].

Unio contradens — Lea (1838), Hanley (1843), Reeve (1865)
Margarita (Unio) contradens — Lea (1836), Lea (1838)
Margaron (Unio) contradens — Lea (1852), Lea (1870)
Unio (Naidea) contradens — Adams & Adams (1857)
Nodularia (s.s.) contradens — Simpson (1900), Simpson (1914)
Contradens contradens — Haas (1913), Thiele (1934), van Benthem Jutting (1953), Haas (1969), ..., Lopes-Lima et al. (2020), Graf & Cummings (2021), Smith (2021), Bieler (2021)
Contradens (s.s.) contradens — Modell (1942), Haas (1969)
Uniandra contradens contradens — Brandt (1974)
Uniandra contradens — Graf (2002), Hoeh et al. (2009), Bogan (2010), IUCN (2012), Bogan & Do (2014), Zieritz et al. (2015)
Uniandra sp. — Sri-aroon et al. (2007)
Contortus contortus — Araujo et al. (2017)
Contradens aff. contradens sp. 1 — Bolotov et al. (2017), Bolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020)
Lens contradens — Zieritz et al. (2021), Jeratthitkul et al. (2021), Zieritz et al. (2021), Jeratthitikul et al. (2021), ..., Konopleva et al. (2023), Wu et al. (2023), Dai et al. (2023), Wu et al. (2024)
Lens aff. contradens — Konopleva et al. (2023)

Unio cambodiensis Lea, 1856
Lea, 1856, Proc. Acad. Nat. Sci. 8: 103.
Lea, 1857, Jour. Acad. Nat. Sci. 3 [O. 6]: 313 [33], pl. 30, fig. 28.
Type(s): HOLOTYPE USNM_84909, Tackrong R., at Korat, Cambodia.

Unio cambodiensis — Lea (1856), Morlet (1889)
Margaron (Unio) cambodiensis — Lea (1870)
Unio cambodgensis — Fischer (1891)
Physunio (s.s.) cambodiensis — Simpson (1900), Simpson (1914), Haas (1919), Haas (1969)
Physunio cambodiensis — Brandt (1974), Graf & Cummings (2007), Sri-aroon et al. (2007), Bogan (2010), IUCN (2011), Do et al. (2018), Zieritz et al. (2018), Konopleva et al. (2019), Graf & Cummings (2021)
Lens contradens — Pfeiffer et al. (2021)

Trapezoideus peninsularis Simpson, 1900
‘Lea’ Reeve, 1865, Conch. Icon. 16: pl. 28, sp. 142 [as ‘Unio sumatrensis’].
Simpson, 1900, Proc. U.S. Nat. Mus. 22: 859, footnote.
Simpson, 1914, Descr. Cat. Naiades: 1186.
Type(s): TYPE BMNH_1964159, Sumatra.

Trapezoideus peninsularis — Simpson (1900), Simpson (1914), Zieritz et al. (2018)
Trapezoideus peninsularius — Graf & Cummings (2007), Bogan (2010)
Contradens peninsularis — Konopleva et al. (2019), Konopleva et al. (2019), Graf & Cummings (2021)
Lens contradens — Pfeiffer et al. (2021)

Margaron (Unio) dimotus Lea, 1870
Lea, 1870, Synopsis Fam. Naiades: 30.
(new name for Unio sumatrensis Lea, 1859)

Margaron (Unio) dimotus — Lea (1870)
Nodularia (s.s.) dimota — Simpson (1900), Simpson (1914)
Contradens dimotus dimotus — Haas (1913)
Contradens ascia dimotus — Haas (1924), van Benthem Jutting (1953), Marwoto (1987)
Contradens ascia — Haas (1969)
Uniandra contradens dimotus — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)
Contradens contradens — Bieler (2021)

Unio ascia Hanley, 1856
‘Benson, MS’ Hanley, 1856, Cat. Rec. Bivalve Shells, Suppl.: 385, pl. 23, fig. 20.
Type(s): LECTOTYPE MCZ_17046, Penang, India.

Unio ascia — Hanley (1856), Preston (1912)
Contradens ascia ascia — Haas (1924)
Ensidens (Uniandra) ascia — Prashad (1932)
Contradens ascia — Haas (1952), Haas (1969)
Uniandra contradens ascia — Brandt (1974)
Contradens contradens — Jeratthitikul et al. (2019)
Lens contradens — Pfeiffer et al. (2021)

Unio rusticus Lea, 1856
Lea, 1856, Proc. Acad. Nat. Sci. 8: 93.
Lea, 1857, Jour. Acad. Nat. Sci. 3 [O. 6]: 294 [14], pl. 25, fig. 7.
Type(s): LECTOTYPE USNM_84082, Siam.

Unio rusticus — Lea (1856), Martens (1860), Sowerby (1868), Morelet (1875), Morlet (1889), Fischer (1891)
Margaron (Unio) rusticus — Lea (1870)
Nodularia (s.s.) rustica — Simpson (1900)
Contradens rusticus — Haas (1914), Ortmann (1917), Haas (1952), Haas (1969)
Nodularia (s.s.) rusticus — Simpson (1914)
Contradens (Sprickia) rusticus — Modell (1942)
Uniandra contradens rustica — Brandt (1974)
Contradens contradens — Jeratthitikul et al. (2019), Ng et al. (2020)
Lens contradens — Pfeiffer et al. (2021)

Unio tumidulus Lea, 1856
Lea, 1856, Proc. Acad. Nat. Sci. 8: 93.
Lea, 1857, Jour. Acad. Nat. Sci. 3 [O. 6]: 295 [15], pl. 25, fig. 9.
Type(s): LECTOTYPE USNM_84712, Siam.

Unio tumidulus — Lea (1856), Martens (1860), Sowerby (1868), Morelet (1875), Fischer (1891)
Unio rusticus — Sowerby (1868)
Margaron (Unio) tumidulus — Lea (1870)
Nodularia (s.s.) tumidula — Simpson (1900), Simpson (1914)
Ensidens (s.s.) tumidulus — Haas (1913)
Ensidens (s.s.) ingallsianus — Haas (1969)
Ensidens ingallsianus — F.R. Woodward (1969)
Uniandra contradens tumidula — Brandt (1974)
Contradens contradens — Do et al. (2018), Jeratthitikul et al. (2019), Ng et al. (2020)
Lens contradens — Pfeiffer et al. (2021)

Unio asperulus Lea, 1866
Lea, 1866, Proc. Acad. Nat. Sci. 18: 133.
Lea, 1868, Jour. Acad. Nat. Sci. 6 [O. 12]: 280, pl. 38, fig. 94.
Type(s): HOLOTYPE USNM_84078, Siam.

Unio asperulus — Lea (1866), Fischer (1891)
Margaron (Unio) asperulus — Lea (1870)
Nodularia (s.s.) asperula — Simpson (1900), Simpson (1914)
Ensidens (sec. Uniandra) asperulus — Haas (1913)
Ensidens (Uniandra) asperulus — Prashad (1932), Haas (1952), Haas (1969)
Uniandra contradens tumidula — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio dautzenbergi Morlet, 1889
Morlet, 1889, J. de Conch. 37: 163, 190, pl. 8, fig. 5.

Unio dautzenbergi — Morlet (1889), Fischer (1891)
Nodularia (s.s.) dautzenbergi — Simpson (1900), Simpson (1914)
Unio (Nodularia) dautzenbergi — Dautzenberg & Fischer (1905)
Contradens dautzenbergi — Haas (1914), Haas (1969)
Uniandra contradens rustica — Brandt (1974)
Contradens contradens — Do et al. (2018), Ng et al. (2020)
Lens contradens — Pfeiffer et al. (2021)

Unio hageni Strubell, 1897
Strubell, 1897, Nachr. Bl. Dtsch. Malak. Ges. 29: 10.
Type(s): TYPE SMF_3603, S. Sumatra.

Unio hageni — Strubell (1897)
Contradens hageni — Haas (1913), Ortmann (1917), Haas (1969)
Nodularia (s.s.) dimota — Simpson (1914)
Uniandra contradens dimotus — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio verbecki Martens, 1897
‘Bött.’ Martens, 1897, Zool. Erg. Nied. Ost. Ind. 4: 89, pl. 5, figs. 1-2, 4-5.

Unio verbecki — Martens (1897)
Nodularia (s.s.) verbecki — Simpson (1900), Simpson (1914)
Contradens verbeeki — Haas (1914), Haas (1969)
Contradens verbecki — Ortmann (1917)
Contradens (Sprickia) verbeeki — Modell (1942), Haas (1969)
Uniandra contradens dimotus — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio pajakomboensis Bullen, 1906
Bullen, 1906, Proc. Malac. Soc. London 7: 15, pl. 2, figs. 9-11.
Type(s): HOLOTYPE BMNH_1906-1-16-52, Pajakombo, Sumatra.

Unio pajakomboensis — Bullen (1906), Simpson (1914)
Schizocleithrum pajacomboënse — Haas (1914)
Contradens hageni — Haas (1969)
Uniandra contradens dimotus — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio javanus Lea, 1840
Lea, 1840, Proc. Amer. Phil. Soc. 1: 285.
Lea, 1842, Trans. Amer. Phil. Soc. 8 [O. 3]: 220, pl. 18, fig. 37.
Type(s): HOLOTYPE USNM_85187, Java.

Unio javanus — Lea (1840), Küster (1856), Küster (1861), Sowerby (1868)
Margaron (Unio) javanus — Lea (1852)
Unio (Hyridella) javanus — Adams & Adams (1857)
Margaron (Unio) contradens — Lea (1870)
Nodularia (s.s.) contradens — Simpson (1900), Simpson (1914)
Contradens contradens — Haas (1913), van Benthem Jutting (1953), Haas (1969)
Uniandra contradens contradens — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio exilis Dunker, 1846
Dunker, 1846, Z. Malak. 3: 109.
Mousson, 1849, Land-Süßw.-Moll. Java: 92, pl. 16, fig. 3.

Unio exilis — Dunker (1846), Mousson (1849)
Margaron (Unio) exilis — Lea (1852)
Unio (Hyridella) exilis — Adams & Adams (1857)
Margaron (Unio) contradens — Lea (1870)
Nodularia (s.s.) contradens — Simpson (1900), Simpson (1914)
Contradens contradens — Haas (1913), van Benthem Jutting (1953), Haas (1969)
Uniandra contradens contradens — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio mutatus Mousson, 1849
Mousson, 1849, Land-Süßw.-Moll. Java: 92, pl. 16, figs. 1-2.

Unio mutatus — Mousson (1849)
Margaron (Unio) mutatus — Lea (1852)
Unio (Hyridella) mutatus — Adams & Adams (1857)
Unio javanus — Sowerby (1868)
Margaron (Unio) contradens — Lea (1870)
Nodularia (s.s.) contradens — Simpson (1900), Simpson (1914)
Contradens contradens — Haas (1913), van Benthem Jutting (1953), Haas (1969)
Uniandra contradens contradens — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio mutatus form curvatus Mousson, 1849
Mousson, 1849, Land-Süßw.-Moll. Java: 92 pl. 16, fig. 2. [infra-subsp.]
(homonym of Unio bonelli var. curvata Rossmässler, 1842; intro'd as intra-sp. of Unio mutatus Mousson, 1849)

Unio mutatus form curvatus — Mousson (1849)
Unio mutatus — Mousson (1849)
Contradens contradens — van Benthem Jutting (1953)

Unio mutatus form inflatus Mousson, 1849
Mousson, 1849, Land-Süßw.-Moll. Java: 92. [infra-subsp.]
(homonym of Unio inflatus Studer, 1820; intro'd as intra-sp. of Unio mutatus Mousson, 1849)

Unio mutatus form inflatus — Mousson (1849)
Unio mutatus — Mousson (1849)
Contradens contradens — van Benthem Jutting (1953)

Unio mutatus form obscurus Mousson, 1849
Mousson, 1849, Land-Süßw.-Moll. Java: 92, pl. 16, fig. 1. [infra-subsp.]
(homonym of Unio obscurus Lea, 1838; intro'd as intra-sp. of Unio mutatus Mousson, 1849)

Unio mutatus form obscurus — Mousson (1849)
Unio mutatus — Mousson (1849)
Contradens contradens — van Benthem Jutting (1953)

Unio sumatrensis Lea, 1859
Lea, 1859, Proc. Acad. Nat. Sci. 11: 153.
Lea, 1860, Jour. Acad. Nat. Sci. 4 [O. 7]: 239 [57], pl. 34, fig. 118.
(homonym of Unio sumatrensis Dunker, 1852; renamed Margaron (Unio) dimotus Lea, 1870)
Type(s): HOLOTYPE USNM_84059, Sumatra.

Unio sumatrensis — Lea (1859), Reeve (1865), Crosse & Fischer (1876), Bullen (1906)
Margaron (Unio) dimotus — Lea (1870)
Nodularia (s.s.) dimota — Simpson (1900), Simpson (1914)
Contradens dimotus dimotus — Haas (1913)
Contradens ascia — Haas (1969)
Uniandra contradens dimotus — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)
Contradens contradens — Bieler (2021)

Unio mederianus Küster, 1861
‘Mousson’ Küster, 1861, Conchyl. Cab. 9(2): 242, pl. 80, fig. 7.

Unio mederianus — Küster (1861)
Nodularia (s.s.) contradens — Simpson (1900), Simpson (1914)
Contradens contradens — Haas (1913), van Benthem Jutting (1953), Haas (1969)
Uniandra contradens contradens — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio paivanus Morelet, 1865
Morelet, 1865, J. de Conch. 13: 227.
Type(s): HOLOTYPE BMNH_93-2-4-1738, Siam.

Unio paivanus — Morelet (1865)
Unio rusticus — Morelet (1875), Morlet (1889), Fischer (1891)
Nodularia (s.s.) rustica — Simpson (1900)
Contradens rusticus — Haas (1914), Haas (1969)
Nodularia (s.s.) rusticus — Simpson (1914)
Uniandra contradens rustica — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Unio sumatrensis Reeve, 1865
‘Lea’ Reeve, 1865, Conch. Icon. 16: pl. 28, sp. 142.
(reference to Unio sumatrensis Lea, 1859)

Unio sumatrensis — Reeve (1865), Crosse & Fischer (1876), Fischer (1891)
Trapezoideus peninsularis — Simpson (1900), Simpson (1914)

Unio paivaeanus Morelet, 1875
Morelet, 1875, Séries Conch. 4: 353 [as ‘paivæanus’].
Morlet, 1889, J. de Conch. 37: 164 [as ‘paivæanus’].
(error for Unio paivanus Morelet, 1865)

Unio paivaeanus — Morelet (1875)

Unio semidecoratus Morlet, 1889
Morlet, 1889, J. de Conch. 37: 164, 192, pl. 8, fig. 4.

Unio semidecoratus — Morlet (1889), Fischer (1891)
Nodularia (s.s.) semidecorata — Simpson (1900)
Ensidens (sec. Uniandra) inaequalis — Haas (1913)
Nodularia (s.s.) inaequalis — Simpson (1914)
Ensidens (Uniandra) inaequalis — Haas (1969)
Uniandra contradens tumidula — Brandt (1974)
Contradens contradens — Do et al. (2018)
Lens contradens — Pfeiffer et al. (2021)

Unio cambodgensis Fischer, 1891
‘Lea’ Fischer, 1891, Bull. Soc. Hist. Nat. Autun 4: 224.
(error for Unio cambodiensis Lea, 1856)

Unio cambodgensis — Fischer (1891)

Microcondylaea bicristata Strubell, 1897
Strubell, 1897, Nachr. Bl. Dtsch. Malak. Ges. 29: 9.

Microcondylaea bicristata — Strubell (1897)
Contradens hageni — Haas (1913)
Pseudodon (sec. Bineurus) bicristatus — Simpson (1914)
Pseudodon (Bineurus) bicristatus — Haas (1920)
Pseudodon (Bineurus) hageni — Haas (1969)
Uniandra contradens dimotus — Brandt (1974)

Unio hagnei Simpson, 1900
‘Strubell’ Simpson, 1900, Proc. U.S. Nat. Mus. 22: 862.
(error for Unio hageni Strubell, 1897)

Unio hagnei — Simpson (1900)

Unio laticeps Martens, 1900
Martens, 1900, Nachr. Bl. Dtsch. Malak. Ges. 32: 15.
Type(s): TYPES ZMB_51796, Aus dem Danau Baru, Indragiri, O. Sumatra.

Unio laticeps — Martens (1900)
Contradens semmelincki laticeps — Haas (1914)
Nodularia (s.s.) laticeps — Simpson (1914)
Contradens semmelincki — Haas (1969)
Lens contradens — Pfeiffer et al. (2021)

Schizocleithrum pajacomboense Haas, 1914
Haas, 1914, Conch. Cab. 9 (pt. 2, h. 49): 203 [as ‘pajacomboënse’].
(error for Unio pajakomboensis Bullen, 1906)

Schizocleithrum pajacomboense — Haas (1914)

Unio verbeeki Haas, 1914
‘von Martens’ of Authors.
‘(Boettger) v. Martens’ Haas, 1914, Conch. Cab. 9 (pt. 2, h. 49): 198.
Modell, 1942, Arch. Moll. 74(5/6): 189.
‘Martens’ Haas, 1969, Das Tierreich 88: 101.
‘Martens’ Haas, 1969, Treatise on Invert. Paleo: N420.
‘(Martens)’ Brandt, 1974, Arch. Moll. 105: 289.
Millard, 2001, Class. Moll. (3): 1064.
(error for Unio verbecki Martens, 1897)

Unio verbeeki — Haas (1914)
Lens contradens — Pfeiffer et al. (2021)

Trapezoideus pulcher Haas, 1952
‘Taaparone-Canefri’ [sic] Haas, 1952, Bull. Nat. Hist. Siam Soc. 15(1): 23.
(misidentified reference to Unio pulcher Tapparone Canefri, 1889)
Type(s): SPECIMENS FMNH_33020, Klong Klung River, Kam Peng Pet Prov., NW Siam.

Trapezoideus pulcher — Haas (1952)
Trapezoideus exolescens exolescens — Brandt (1974)
Trapezoideus exolescens — He & Zhuang (2013)

Unio thaiensis Habe, 1964
Habe, 1964, Nature & Life in Southeast Asia 3: 62, pl. ?, figs. 3-4.

Unio thaiensis — Habe (1964)
Uniandra contradens rustica — Brandt (1974)
Lens contradens — Pfeiffer et al. (2021)

Uniandra contradens rusticoides Brandt, 1974
Brandt, 1974, Arch. Moll. 105: 290, pl. 24, fig. 50.
(intro'd as intra-sp. of Unio contradens Lea, 1838)
Type(s): HOLOTYPE SMF_220845, Thailand: Klong Min near Chandi; Chawang Distr.; Prov. Nakon Sritammarat.

Uniandra contradens rusticoides — Brandt (1974)
Contradens contradens — Jeratthitikul et al. (2019)
Lens contradens — Pfeiffer et al. (2021)

Trapezoideus peninsularius Graf & Cummings, 2007
‘Simpson’ of Authors.
Graf & Cummings, 2007, J. Moll. Studies 73: 312.
Bogan, 2010, FADA: [web].
(error for Trapezoideus peninsularis Simpson, 1900)

Trapezoideus peninsularius — Graf & Cummings (2007)
Lens contradens — Pfeiffer et al. (2021)

Contortus contortus Araujo et al., 2017
Araujo et al., 2017, Zool. J. Linn. Soc. 179(2): 280.
(error for Unio contradens Lea, 1838)

Contortus contortus — Araujo et al. (2017)
Lens contradens — Pfeiffer et al. (2021)

Taxonomic History (since 1900)

Nodularia (s.s.) contradens — Simpson (1900), Simpson (1914)
Physunio (s.s.) cambodiensis — Simpson (1900), Simpson (1914), Haas (1919), Haas (1969)
Nodularia (s.s.) rustica — Simpson (1900)
Nodularia (s.s.) tumidula — Simpson (1900), Simpson (1914)
Nodularia (s.s.) dimota — Simpson (1900), Simpson (1914)
Trapezoideus peninsularis — Simpson (1900), Simpson (1914), Zieritz et al. (2018)
Nodularia (s.s.) asperula — Simpson (1900), Simpson (1914)
Nodularia (s.s.) dautzenbergi — Simpson (1900), Simpson (1914)
Nodularia (s.s.) semidecorata — Simpson (1900)
Nodularia (s.s.) verbecki — Simpson (1900), Simpson (1914)
Unio hagnei — Simpson (1900)
Unio laticeps — Martens (1900)
Unio (Nodularia) dautzenbergi — Dautzenberg & Fischer (1905)
Unio sumatrensis — Bullen (1906)
Unio pajakomboensis — Bullen (1906), Simpson (1914)
Unio ascia — Preston (1912)
Contradens contradens — Haas (1913), Thiele (1934), van Benthem Jutting (1953), Haas (1969), ..., Lopes-Lima et al. (2020), Graf & Cummings (2021), Smith (2021), Bieler (2021)
Ensidens (s.s.) tumidulus — Haas (1913)
Contradens dimotus dimotus — Haas (1913)
Ensidens (sec. Uniandra) asperulus — Haas (1913)
Ensidens (sec. Uniandra) inaequalis — Haas (1913)
Contradens hageni — Haas (1913), Ortmann (1917), Haas (1969)
Contradens rusticus — Haas (1914), Ortmann (1917), Haas (1952), Haas (1969)
Nodularia (s.s.) rusticus — Simpson (1914)
Contradens dautzenbergi — Haas (1914), Haas (1969)
Nodularia (s.s.) inaequalis — Simpson (1914)
Pseudodon (sec. Bineurus) bicristatus — Simpson (1914)
Contradens verbeeki — Haas (1914), Haas (1969)
Contradens semmelincki laticeps — Haas (1914)
Nodularia (s.s.) laticeps — Simpson (1914)
Schizocleithrum pajacomboënse — Haas (1914)
Schizocleithrum pajacomboense — Haas (1914)
Unio verbeeki — Haas (1914)
Contradens verbecki — Ortmann (1917)
Pseudodon (Bineurus) bicristatus — Haas (1920)
Contradens ascia ascia — Haas (1924)
Contradens ascia dimotus — Haas (1924), van Benthem Jutting (1953), Marwoto (1987)
Ensidens (Uniandra) ascia — Prashad (1932)
Ensidens (Uniandra) asperulus — Prashad (1932), Haas (1952), Haas (1969)
Contradens (s.s.) contradens — Modell (1942), Haas (1969)
Contradens (Sprickia) rusticus — Modell (1942)
Contradens (Sprickia) verbeeki — Modell (1942), Haas (1969)
Contradens ascia — Haas (1952), Haas (1969)
Trapezoideus pulcher — Haas (1952)
Unio thaiensis — Habe (1964)
Ensidens (s.s.) ingallsianus — Haas (1969)
Ensidens ingallsianus — F.R. Woodward (1969)
Ensidens (Uniandra) inaequalis — Haas (1969)
Pseudodon (Bineurus) hageni — Haas (1969)
Contradens semmelincki — Haas (1969)
Uniandra contradens contradens — Brandt (1974)
Uniandra contradens ascia — Brandt (1974)
Physunio cambodiensis — Brandt (1974), Graf & Cummings (2007), Sri-aroon et al. (2007), Bogan (2010), IUCN (2011), Do et al. (2018), Zieritz et al. (2018), Konopleva et al. (2019), Graf & Cummings (2021)
Uniandra contradens rustica — Brandt (1974)
Uniandra contradens tumidula — Brandt (1974)
Uniandra contradens dimotus — Brandt (1974)
Trapezoideus exolescens exolescens — Brandt (1974)
Uniandra contradens rusticoides — Brandt (1974)
Uniandra contradens — Graf (2002), Hoeh et al. (2009), Bogan (2010), IUCN (2012), Bogan & Do (2014), Zieritz et al. (2015)
Uniandra sp. — Sri-aroon et al. (2007)
Trapezoideus peninsularius — Graf & Cummings (2007), Bogan (2010)
Trapezoideus exolescens — He & Zhuang (2013)
Contortus contortus — Araujo et al. (2017)
Contradens aff. contradens sp. 1 — Bolotov et al. (2017), Bolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020)
Contradens peninsularis — Konopleva et al. (2019), Konopleva et al. (2019), Graf & Cummings (2021)
Lens contradens — Zieritz et al. (2021), Jeratthitkul et al. (2021), Zieritz et al. (2021), Jeratthitikul et al. (2021), ..., Konopleva et al. (2023), Wu et al. (2023), Dai et al. (2023), Wu et al. (2024)
Lens aff. contradens — Konopleva et al. (2023)