Anodonta exotica Lamarck, 1819
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 87, sp. 12.
Type(s): POSSIBLE SYNTYPE MNHN_MPL_0007, de Amérique de Sud acheté de la vente de M. Faujas St. Frond [South America purchased from Mr. Faujas St. Frond] “Paratype” according to Johnson (1952).

Glabaris (s.s.) trapesialis var. exoticus — Simpson (1900)
Anodonta exotica — Corsi (1900)
Anodontites (s.s.) trapesialis var. exoticus — Simpson (1914)
Anodontites (s.s.) exoticus exoticus — Haas (1931), Haas (1969)
Anodontites exotica — Pilsbry (1933)
Glabaris trapesialis — Modell (1942)
Anodontites (s.s.) trapesialis trapesialis — Figueiras (1965)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta sinuosa Lamarck, 1819
Bruguière, 1797. Encycl. Méth. 2: pl. 203 [204], fig. 2a-b [as Anodontites sp.].
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 87, sp. 14.
Type(s): POSSIBLE SYNTYPE MNHN_MPL_0009, [unknown].

Glabaris (s.s.) sinuosus — Simpson (1900)
Anodontites (s.s.) sinuosa — Simpson (1914)
Anodontites sinuosus — Marshall (1915)
Anodontites (s.s.) exoticus exoticus — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta trapesialis Lamarck, 1819
Schröter, 1779. Gesch. Flußconch.: pl. 3, fig. 1.
Martini & Chemnitz, 1785. Conchyl. Cab. 8: 185, pl. 86, fig. 762.
Bruguière, 1797. Encycl. Méth. 2: pl. 205, fig. 1a-b [as Anodontites sp.].
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 87, sp. 11.
Type(s): SYNTYPES MHNG_MOLL_50581, Unknown.

Glabaris (s.s.) trapesialis — Simpson (1900)
Glabaris trapezialis [sic] — Ihering (1910)
Anodontites (s.s.) trapesialis — Simpson (1914), Rumi et al. (2008), Pereira et al. (2014), Torres et al. (2018)
Anodontites trapezialis [sic] — Marshall (1915), H.B. Baker (1930)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Figueiras (1965), Haas (1969)
Glabaris trapesialis — Modell (1942)
Anodontites (Pachyanodon) trapezialis trapezialis [sic] — Morretes (1949)
Anodontites trapesialis — Lucena (1951), Simone (1994), Graf (2000), Martinez et al. (2004), Simone (2006), ... Czaja et al. (2023), Wu et al. (2023), Wu et al. (2024), Torres et al. (2024), Dai et al. (2025)
Anodontites trapesialis trapesialis — Mansur & Valer (1992), Ramírez et al. (2003)

Anodonta trapezialis Blainville, 1825
‘Lamarck’ of Authors.
Blainville, 1825. Manuel Malacol. et Conch.: 538.
Bory de St. Vincent, 1827. Encycl. Méth. 2: 147.
Menke, 1828. Syn. Method. Moll.: 63.
Menke, 1830. Syn. Method. Moll.: 106.
Lea, 1834. Trans. Amer. Phil. Soc. 5 [O. 1]: 93.
d’Orbigny, 1835. Mag. Zool. 5(61-62): 43.
Lea, 1836. Synopsis Fam. Naiades: 53.
Lea, 1838. Synopsis Fam. Naiades: 31.
Swainson, 1840. Treat. Malacol.: 287.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 220.
d’Orbigny, 1846. Voyage dans l’Amérique Méridionale 5: 596.
Lea, 1852. Synopsis Fam. Naiades: 52.
Hupé, 1857. [in] Castelnau, Anim. Nouv. Rares d’Amer. Sud: 85.
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 504.
Lea, 1870. Synopsis Fam. Naiades: 82.
Ihering, 1893. Arch. Naturg. 59(1): 135.
Corsi, 1900. Anais Mus. Nac. Montevideo 2: 456.
Marshall, 1915. Proc. U.S. Nat. Mus. 49(2122): 529.
Haas, 1929. Senckenbergiana 11: 340.
H.B. Baker, 1930. Occ. Pap. Mus. Zool. Univ. Mich. (210): 70.
Morretes, 1949. Arqu. Mus. Paranaense 7: 27.
(error for Anodonta trapesialis Lamarck, 1819)

Glabaris (s.s.) trapesialis — Simpson (1900)
Anodontites (s.s.) trapesialis — Simpson (1914)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon anserinus Wagner, 1827
Spix in Wagner, 1827. Test. Fluv. Brasil.: 29, pl. 21, figs. 1-2.

Glabaris (s.s.) trapesialis var. anserinus — Simpson (1900)
Anodonta exotica — Corsi (1900)
Anodontites trapezialis [sic] var. anserinus — F. Baker (1913)
Anodontites (s.s.) trapesialis var. anserinus — Simpson (1914)
Anodontites (s.s.) trapesialis anserina — Ortmann (1921)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Anodontites (Pachyanodon) trapezialis [sic] anserina — Morretes (1949)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon giganteus Wagner, 1827
Bruguière, 1797. Encycl. Méth. 2: pl. 205, fig. 1a-b [as Anodontites sp.].
Spix in Wagner, 1827. Test. Fluv. Brasil.: 27, pl. 19, figs. 1-2.
Type(s): PARATYPE SMF_3815, Rio Solimoes, b. Ega, Brasilien.

Glabaris (s.s.) trapesialis — Simpson (1900)
Anodonta exotica — Corsi (1900)
Anodontites (s.s.) trapesialis — Simpson (1914)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Anodontites trapesialis trapesialis — Mansur & Valer (1992), Ramírez et al. (2003)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon radiatus Wagner, 1827
Spix in Wagner, 1827. Test. Fluv. Brasil.: 31, pl. 23, fig. 1.
Type(s): SYNTYPE SMF_3840, Staat Minas Gereas, Brasilien.

Glabaris (s.s.) radiatus — Simpson (1900)
Anodonta exotica — Corsi (1900)
Anodontites (s.s.) radiatus — Simpson (1914)
Anodontites (s.s.) exoticus exoticus — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta glauca Valenciennes, 1827
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 87. [nomen nudum]
Valenciennes, 1827. Receuil Observ. Zool. 2(11-12): 236, pl. 50, fig. 2.
Type(s): SYNTYPE MNHN-IM-2000-1706A, Acapulco.

Glabaris (s.s.) glaucus — Simpson (1900)
Anodonta (Patularia) glauca — Martens (1900)
Anodontites (s.s.) glauca — Simpson (1914)
Leila (Pseudoleila) trapezialis [sic]-glauca — Frierson (1927)
Anodontites trapezialis [sic] glaucus — Haas (1929)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)
Anodontoides glauca — Contreras-Arquieta (2000)

Anodon susannae Griffith & Pidgeon, 1833
Gray in Griffith & Pidgeon, 1833. [in] Cuvier, Animal Kingdom 12(38): pl. 24, fig. 1 [as ‘susannæ’].
Gray in Griffith & Pidgeon, 1834. [in] Cuvier, Animal Kingdom 12(39-40): 595 [as ‘susannæ].

Glabaris (s.s.) trapesialis — Simpson (1900)
Anodontites (s.s.) trapesialis — Simpson (1914)
Anodontites (s.s.) exoticus susannae — Haas (1931), Haas (1969)
Anodontites (s.s.) trapesialis susannae — Bonetto & Mansur (1970), Rumi et al. (2008)
Anodontites trapesialis — Simone (1994), Simone (2006)
Anodontites trapesialis trapesialis — Ramírez et al. (2003)
— Petit & Coan (2008)

Anodon penicillatus Gray, 1834
Gray, 1834. Proc. Zool. Soc. London 1834: 57.

Glabaris (s.s.) trapesialis — Simpson (1900)
Anodontites (s.s.) trapesialis — Simpson (1914)
Anodontites (s.s.) exoticus susannae — Haas (1931), Haas (1969)
Anodontites (s.s.) trapesialis susannae — Bonetto & Mansur (1970)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon sinuosis Swainson, 1841
‘Lamarck’ Swainson, 1841. Ex. Conch.: 29, pl. 16.
(error for Anodonta sinuosa Lamarck, 1819)

Glabaris (s.s.) sinuosus — Simpson (1900)
Anodonta (Pseudoleila) ciconia — Martens (1900)
Anodontites (s.s.) sinuosa — Simpson (1914)

Anodonta nicaraguae Philippi, 1849
Philippi, 1849. Z. Malak. 5(9): 130.
Type(s): LECTOTYPE MCZ_184530, Lake Nicaragua.

Glabaris nicaragua — Simpson (1900)
Anodonta (Glabaris) nicaragua — Martens (1900)
Anodontites nicaragua — Simpson (1914)
Leila (Pseudoleila) nicaragua [sic] — Frierson (1927)
Anodontites trapezialis [sic] bridgesii — Haas (1929)
Anodontites (s.s.) trapesialis nicaraguae — Haas (1930)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)

Anodon ciconia Gould, 1851
Gould, 1851. Proc. Boston Soc. Nat. Hist. 4: 92.
Type(s): HOLOTYPE MCZ_169084, Mexico ?

Glabaris (s.s.) trapesialis — Simpson (1900)
Glabaris (s.s.) glaucus — Simpson (1900)
Anodonta (Pseudoleila) ciconia — Martens (1900)
Anodontites (s.s.) trapesialis — Simpson (1914)
Leila (Pseudoleila) ciconia — Frierson (1927)
Anodontites (s.s.) trapesialis nicaraguae — Haas (1930)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)

Anodonta ciconia Carpenter, 1857
‘Gould’ of Authors.
Carpenter, 1857. Maz. Shells: 117.
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 534, pl. 68, 78, figs. 2-2a.
Martens, 1900. Biol. Centr.-Amer., Moll.: 536, pl. 41, fig. 4.
(reference to Anodon ciconia Gould, 1851)

Glabaris (s.s.) glaucus — Simpson (1900)
Anodontites (s.s.) glauca var. sinaloensis — Simpson (1914)

Anodonta burroughiana Chenu, 1858
Chenu, 1858. Illustr. Conchyl.: pl. 3.
(misidentified reference to Anodonta burroughiana Lea, 1834)

Glabaris (s.s.) glaucus — Simpson (1900)
Anodontites (s.s.) glauca — Simpson (1914)

Anodonta forbesiana Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 92.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 393, pl. 47, fig. 301.
Type(s): HOLOTYPE USNM_86694, Uruguay River.

Glabaris (s.s.) forbesianus — Simpson (1900)
Anodonta forbesiana — Corsi (1900)
Anodontites (s.s.) forbesiana — Simpson (1914), Ortmann (1921)
Anodontites (s.s.) trapesialis forbesianus — Haas (1931), Figueiras (1965), Haas (1969), Mansur (1970), Quintana (1982)
Anodontites (Pachyanodon) forbesiana — Morretes (1949)
Anodontites trapesialis forbesianus — Schade (1965), Mansur et al. (1988), Ramírez et al. (2003)
Anodontites (s.s.) trapesialis susannae — Bonetto & Mansur (1970)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon gigantea H. Adams, 1866
‘Lea’ of Authors.
H. Adams, 1866. Proc. Zool. Soc. London 1866: 444 [as ‘Leila gigantea’].
‘Lea’ Sowerby, 1867. Conch. Icon. 17: pl. 8, sp. 19, fig. 18.
Sowerby, 1870. Conch. Icon. 17: pl. 36, sp. 152 [as ‘A. trapezialis Lamarck’].
(misidentified reference to Anodonta gigantea Lea, 1838)

Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon areolatus Sowerby, 1867
Sowerby, 1867. Conch. Icon. 17: pl. 10, sp. 28.
(homonym of Anodon areolatus Swainson, 1829)

Glabaris (s.s.) trapesialis var. scriptus — Simpson (1900)
Anodontites (s.s.) trapesialis var. scriptus — Simpson (1914)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon exoticus Sowerby, 1867
‘Gray’ Sowerby, 1867. Conch. Icon. 17: pl. 16, sp. 57.
(homonym of Anodonta exotica Lamarck, 1819; renamed Leila grayana Frierson, 1922)
Type(s): HOLOTYPE BMNH_1965207, Rio de la Plata.

Glabaris (s.s.) moricandii — Simpson (1900)
Anodontites (s.s.) moricandii — Simpson (1914)
Leila grayana — Frierson (1922)
Anodontites trapesialis — Simone (1994)

Anodon scriptus Sowerby, 1867
‘Férussac’ Sowerby, 1867. Conch. Icon. 17: pl. 4, sp. 9.
Type(s): HOLOTYPE BMNH_1964370, Hab._?

Glabaris (s.s.) trapesialis var. scriptus — Simpson (1900)
Anodontites (s.s.) trapesialis var. scriptus — Simpson (1914)
Anodontites (s.s.) trapesialis scripta — Ortmann (1921)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Anodontites (Pachyanodon) trapezialis [sic] scripta — Morretes (1949)
Leila blainvilliana — Veitenheimer (1973), Ramírez et al. (2003)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon subsinuatus Sowerby, 1867
Sowerby, 1867. Conch. Icon. 17: pl. 7, sp. 14.

Glabaris (s.s.) trapesialis var. scriptus — Simpson (1900)
Anodontites (s.s.) trapesialis var. scriptus — Simpson (1914)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Leila blainvilliana — Veitenheimer (1973)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta bridgesii Lea, 1868
Lea, 1868. Proc. Acad. Nat. Sci. 20: 95.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 291 [51], pl. 42, fig. 104.
Type(s): TYPES USNM_86691, Lake Nicaragua.

Glabaris (s.s.) bridgesii — Simpson (1900)
Anodonta (Glabaris) nicaragua — Martens (1900)
Anodontites (s.s.) bridgesii — Simpson (1914)
Leila (Pseudoleila) nicaragua [sic] — Frierson (1927)
Anodontites trapezialis [sic] bridgesii — Haas (1929)
Anodontites (s.s.) trapesialis nicaraguae — Haas (1930)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)

Anodonta exotica Martens, 1868
‘Lamarck’ of Authors.
Martens, 1868. Malak. Blatt. 15: 197.
Pilsbry & Rush, 1896. Nautilus 10: 81.
(reference to Anodonta exotica Lamarck, 1819)

Anodontites (s.s.) trapesialis forbesianus — Mansur (1970)

Anodonta gigantea Martens, 1868
‘Spix’ of Authors.
Martens, 1868. Malak. Blatt. 15: 196.
Clessin, 1888. Malak. Blatt. 10: 171.
(reference to Anodon giganteus Wagner, 1827)

Anodontites (s.s.) trapesialis forbesianus — Mansur (1970)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)
Anodontites trapesialis — Mansur & Pereira (2006)

Anodonta jewettiana Lea, 1868
Lea, 1868. Proc. Acad. Nat. Sci. 20: 95.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 289, pl. 41, fig. 101 [as ‘jewettii’].
Type(s): HOLOTYPE USNM_86681, Lake Nicaragua.

Glabaris (s.s.) jewittianus [sic] — Simpson (1900)
Anodonta (Glabaris) jewettii — Martens (1900)
Anodontites (s.s.) jewettianus — Simpson (1914)
Leila (Pseudoleila) nicaragua [sic] — Frierson (1927)
Anodontites (s.s.) trapesialis glaucus — Haas (1969)
Anodontites trapesialis — Bieler (2021)

Anodonta jewettii Lea, 1868
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 289, pl. 41, fig. 101.
(error for Anodonta jewettiana Lea, 1868)

Glabaris (s.s.) jewittianus [sic] — Simpson (1900)
Anodonta (Glabaris) jewettii — Martens (1900)
Anodontites (s.s.) jewettianus — Simpson (1914)
Leila (Pseudoleila) nicaragua [sic] — Frierson (1927)
Anodontites (s.s.) trapesialis nicaraguae — Haas (1930)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)
Anodontites trapesialis — Bieler (2021)

Anodonta wallisi Mousson, 1869
Mousson, 1869. Malak. Blatt. 16: 188.

Glabaris wallisi — Simpson (1900)
Anodontites wallisi — Simpson (1914)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)

Anodon glaucus Sowerby, 1870
‘Valenciennes’ of Authors.
Sowerby, 1870. Conch. Icon. 17: pl. 27, sp. 105.
Clessin, 1876. Conchyl. Cab.: 222, pl. 73, fig. 4.
(reference to Anodonta glauca Valenciennes, 1827)

Glabaris (s.s.) glaucus — Simpson (1900)
Anodonta (Pseudoleila) ciconia — Martens (1900)
Anodontites (s.s.) glauca var. sinaloensis — Simpson (1914)
Leila (Pseudoleila) ciconia — Frierson (1927)

Anodon rioplatensis Sowerby, 1870
Sowerby, 1870. Conch. Icon. 17: pl. 26, sp. 101 [as ‘Rio-Platensis’].

Glabaris (s.s.) trapesialis var. rioplatensis — Simpson (1900)
Anodontites (s.s.) trapesialis var. rioplatensis — Simpson (1914)
Anodontites (s.s.) rioplatensis — Ortmann (1921)
Anodontites (s.s.) trapesialis forbesianus — Haas (1931), Figueiras (1965), Haas (1969), Mansur (1970), Quintana (1982)
Anodontites trapesialis — Simone (1994), Simone (2006)
Anodontites trapesialis trapesialis — Ramírez et al. (2003)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)

Anodonta nicaragua Tate, 1870
Philippi of Authors.
Tate, 1870. Amer. J. Conch. 5: 161.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [7].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 932.
Haas, 1930. Senckenbergiana 12(6): 324.
(error for Anodonta nicaraguae Philippi, 1849)

Anodonta bahiensis Clessin, 1873
‘Küster’ Clessin, 1873. Conchyl. Cab. 9(1): 94, pl. 20, fig. 2.

Glabaris (s.s.) trapesialis var. scriptus — Simpson (1900)
Anodontites (s.s.) trapesialis var. scriptus — Simpson (1914)
Anodontites (s.s.) trapesialis scripta — Ortmann (1921)
Anodontites (s.s.) exoticus exoticus — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta angustata Clessin, 1876
Clessin, 1876. Conchyl. Cab.: 226, pl. 74, figs. 6-7.

Glabaris (s.s.) moricandii — Simpson (1900)
Anodontites (s.s.) moricandii — Simpson (1914)
Anodontites (s.s.) exoticus exoticus — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta glauca var. sinaloensis Crosse & Fischer, 1884
Crosse & Fischer, 1884. J. de Conch. 31: 219.
(intro'd as intra-sp. of Anodonta glauca Valenciennes, 1827)
Type(s): SYNTYPE MNHN-IM-2000-1707, Rio Presidio, pres Mazatlan, etat de Sinaloa, Mexique.

Glabaris (s.s.) glaucus var. sinaloensis — Simpson (1900)
Anodonta (Pseudoleila) ciconia — Martens (1900)
Anodontites (s.s.) glauca var. sinaloensis — Simpson (1914)
Leila (Pseudoleila) ciconia — Frierson (1927)
Anodontites trapezialis [sic] sinaloensis — Haas (1929)
Anodontites (s.s.) trapesialis nicaraguae — Haas (1930)
Anodontites (s.s.) trapesialis glaucus — Haas (1931), Haas (1969)
Anodontites sinaloensis — Contreras-Arquieta (2000)

Anodonta riograndensis Ihering, 1890
Ihering, 1890. Arch. Naturg. 56(1): 158.
Type(s): TYPE SMF_3838, Rio Guahyba, Staat Rio Grande do Sul, Brasilien.

— Simpson (1914)
Anodontites (s.s.) riograndensis — Ortmann (1921)
Anodontites (s.s.) exoticus susannae — Haas (1931), Haas (1969)
Anodontites (Pachyanodon) riograndensis — Morretes (1949)
Anodontites (s.s.) trapesialis forbesianus — Figueiras (1965), Mansur (1970)
Anodontites (s.s.) trapesialis susannae — Bonetto & Mansur (1970)
Anodontites trapesialis — Simone (1994), Simone (2006), Mansur & Pereira (2006)
Anodontites trapesialis trapesialis — Ramírez et al. (2003)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)

Glabaris simpsonianus Pilsbry, 1896
Pilsbry, 1896. Proc. Acad. Nat. Sci. 48: 564, pl. 27, fig. 13.
Type(s): FIGURED SYNTYPE ANSP_41845, Rio de la Plata.

Glabaris (s.s.) simpsonianus — Simpson (1900)
Anodontites (s.s.) simpsonianus — Simpson (1914)
Anodontites (s.s.) exoticus susannae — Haas (1931), Haas (1969)
Anodontites (s.s.) trapesialis forbesianus — Mansur (1970)
Anodontites (s.s.) trapesialis susannae — Bonetto & Mansur (1970)
Anodontites trapesialis — Simone (1994), Simone (2006)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)

Glabaris trapesialis var. cygneiformis Pilsbry, 1896
Pilsbry, 1896. Proc. Acad. Nat. Sci. 48: 563, pl. 26, figs. 5-6.
(intro'd as intra-sp. of Anodonta trapesialis Lamarck, 1819)
Type(s): SYNTYPES ANSP_69741, pond, near Maldonado, Uruguay.

Glabaris (s.s.) trapesialis var. cygnæformis [sic] — Simpson (1900)
Anodonta trapezialis v. cigneiformis [sic] — Corsi (1900)
Anodontites (s.s.) trapesialis var. cygnæformis [sic] — Simpson (1914)
Anodontites (s.s.) exoticus susannae — Haas (1931), Haas (1969)
Anodontites (s.s.) trapesialis forbesianus — Figueiras (1965), Mansur (1970), Quintana (1982)
Anodontites (s.s.) trapesialis susannae — Bonetto & Mansur (1970)
Anodontites trapesialis — Simone (1994), Simone (2006)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)

Anodonta jewittiana Simpson, 1900
‘Lea’ of Authors.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 927.
Frierson, 1927. Check List N. Amer. Naiades: 97.
(error for Anodonta jewettiana Lea, 1868)

Anodontites (s.s.) jewettianus — Simpson (1914)

Anodonta jewittii Simpson, 1900
‘Lea’ of Authors.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 927.
Frierson, 1927. Check List N. Amer. Naiades: 97.
‘Lea’ Haas, 1931. Senckenbergiana 13: 99.
(error for Anodonta jewettii Lea, 1868)

Glabaris (s.s.) umbonatus Simpson, 1900
‘Gould’ Sowerby, 1870. Conch. Icon. 17: pl. 29, sp. 115, fig. 115b [as ‘Anodon ciconia’]. [in part]
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 926, footnote.
Simpson, 1914. Descr. Cat. Naiades: 1436.

Glabaris (s.s.) umbonatus — Simpson (1900)
Anodontites (s.s.) umbonatus — Simpson (1914)
Anodontites (s.s.) trapesialis forbesianus — Haas (1969)

Glabaris dulcis Ihering, 1910
Ihering, 1910. Abh. Senckenb. Naturf. Ges. 32: 132, pl. 12, figs. 5a-b.
Type(s): TYPE SMF_3841, Fazenda do Sacramento, Mun. de Sao Domingo do Prata, Minas Gereas, Geb. des Rio Doce.

Glabaris dulcis — Ihering (1910)
Anodontites (s.s.) dulcis — Simpson (1914)
Anodontites (s.s.) exoticus exoticus — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodontites aurora Marshall, 1915
Marshall, 1915. Proc. U.S. Nat. Mus. 49(2122): 529, pl. 69.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_273689, Ceara, Brazil.

Anodontites aurora — Marshall (1915)
Anodontites (Styganodon) aurora — Morretes (1949)
Anodontites (s.s.) exoticus exoticus — Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodontites darochai Marshall, 1915
Marshall, 1915. Proc. U.S. Nat. Mus. 49(2122): 528, pl. 68.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_273687, Ceara, Brazil.

Anodontites darochai — Marshall (1915)
Anodontites (Pachyanodon) trapezialis [sic] darochai — Morretes (1949)
Anodontites (s.s.) exoticus exoticus — Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodontites salmonea Marshall, 1915
Marshall, 1915. Proc. U.S. Nat. Mus. 49(2122): 528, pl. 67.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_273688, Ceara, Brazil.

Anodontites salmonea — Marshall (1915)
Anodontites (Styganodon) crispata salmonea — Morretes (1949)
Anodontites (s.s.) patagonicus patagonicus — Haas (1969)
Anodontites trapesialis — Simone (2006)

Anodontites jaliscoensis Pilsbry, 1920
Pilsbry, 1920. Proc. Acad. Nat. Sci. 72: 193, fig. 3.
Type(s): HOLOTYPE ANSP_46197, Toliman, Jalisco.

Anodontites jaliscoensis — Frierson (1927)
Anodontites (s.s.) trapesialis glaucus — Haas (1969)
Anodontoides jaliscoensis — Contreras-Arquieta (2000)

Leila grayana Frierson, 1922
‘Gray’ Sowerby, 1867. Conch. Icon. 17: pl. 16, sp. 57.
Frierson, 1922. Nautilus 36: 9.
(new name for Anodon exoticus Sowerby, 1867)

Leila grayana — Frierson (1922)
Anodontites trapesialis — Simone (2006)

Anodontites flucki Walker, 1924
Walker, 1924. Nautilus 38(2): 53, pl. 1, figs. 3-4.
Type(s): HOLOTYPE UMMZ_112641, Wanks River (Rio Coco), near Sang Sangta, Nicaragua.

Anodontites (s.s.) trapesialis glaucus — Haas (1969)

Anodontites marcusi Mendes, 1939
Mendes, 1939. Bol. Biol. São Paulo 4: 481, 5 Abb.

Anodontites (s.s.) exoticus susannae — Haas (1969)
Anodontites trapesialis — Simone (1994), Simone (2006)

Anodonta trapezia of Authors, unknown year
‘Küster’ of Authors.
(error for Anodonta trapezialis Blainville, 1825)

Anodonta exotica Cuvier, 1817
‘Lamarck’ Cuvier, 1817. Règne Animal 2: pl. 90, figs. 1-1a.
(reference to Anodonta exotica Lamarck, 1819)

Unio (Anodontes) exotica var. A elongata d’Orbigny, 1835
d’Orbigny, 1835. Mag. Zool. 5(61-62): 39 [as ‘Var. A’].
(intro'd as intra-sp. of Anodonta exotica Lamarck, 1819; homonym of Anodon elongatus Swainson, 1823)

Anodontites trapesialis — Simone (1994), Simone (2006)

Unio (Anodontes) exotica var. B oblonga d’Orbigny, 1835
d’Orbigny, 1835. Mag. Zool. 5(61-62): 39 [as ‘Var. B’].
(intro'd as intra-sp. of Anodonta exotica Lamarck, 1819)

Anodontites trapesialis — Simone (1994), Simone (2006)

Unio (Anodontes) exotica var. C larga d’Orbigny, 1835
d’Orbigny, 1835. Mag. Zool. 5(61-62): 39 [as ‘Var. C’].
(intro'd as intra-sp. of Anodonta exotica Lamarck, 1819)

Anodontites trapesialis — Simone (1994), Simone (2006)

Iridina trapezialis d’Orbigny, 1846
d’Orbigny, 1846. Voyage dans l’Amérique Méridionale 5: 596.
(reference to Anodonta trapesialis Lamarck, 1819)

Anodonta esula Gray, 1847
‘Orb.’ Gray, 1847. Proc. Zool. Soc. London 15: 197.
(misidentified reference to Iridina esula d’Orbigny, 1835)

Anodontites trapesialis — Simone (1994), Simone (2006)

Anodon pencillatus Lea, 1852
‘Gray’ Lea, 1852. Synopsis Fam. Naiades: 52.
‘Gray’ Lea, 1870. Synopsis Fam. Naiades: 83.
(error for Anodon penicillatus Gray, 1834)

Anodon blainvilleana Sowerby, 1867
‘Lea’ Sowerby, 1867. Conch. Icon. 17: pl. 6, sp. 12.
(error for Anodonta blainvilliana Lea, 1834; misidentified reference to Anodonta blainvilliana Lea, 1834)

Glabaris (s.s.) trapesialis — Simpson (1900)
Anodontites (s.s.) trapesialis — Simpson (1914)
Anodontites (s.s.) trapesialis trapesialis — Haas (1931), Haas (1969)
Anodontites trapesialis — Simone (2006)

Anodon moretonianus Sowerby, 1867
‘Lea’ Sowerby, 1867. Conch. Icon. 17: pl. 9, sp. 21, fig. 20.
(error for Anodonta mortoniana Lea, 1834; misidentified reference to Anodonta mortoniana Lea, 1834)

Glabaris (s.s.) trapesialis var. moretonianus — Simpson (1900)
Anodontites (s.s.) trapesialis var. moretonianus — Simpson (1914)
Anodontites (s.s.) trigona — Ortmann (1921)
— Haas (1969)
Anodontites trapesialis — Simone (1994)

Anodon ciconia Sowerby, 1870
‘Gould’ Sowerby, 1870. Conch. Icon. 17: pl. 29, sp. 115, fig. 115a. [in part]
(reference to Anodon ciconia Gould, 1851)

Glabaris (s.s.) trapesialis var. rioplatensis — Simpson (1900)
Anodonta (Pseudoleila) ciconia — Martens (1900)
Anodontites (s.s.) trapesialis var. rioplatensis — Simpson (1914)
Leila (Pseudoleila) ciconia — Frierson (1927)

Anodon ciconia Sowerby, 1870
‘Gould’ Sowerby, 1870. Conch. Icon. 17: pl. 29, sp. 115, fig. 115b. [in part]
(reference to Anodon ciconia Gould, 1851)

Glabaris (s.s.) umbonatus — Simpson (1900)
Anodontites (s.s.) umbonatus — Simpson (1914)

Anodonta anserina Clessin, 1873
‘Spix’ Clessin, 1873. Conchyl. Cab. 9(1): 80, pl. 20, fig. 1.
(reference to Anodon anserinus Wagner, 1827)

Anodonta trapezialis Doering, 1875
‘Lamarck’ Doering, 1875. Periód. Zool. 2: 46.
Ihering, 1890. Arch. Naturg. 56(1): 147, 157.
(error for Anodonta trapesialis Lamarck, 1819; reference to Anodonta trapesialis Lamarck, 1819)

Anodontites (s.s.) trapesialis forbesianus — Mansur (1970)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)

Glabaris susannae Ihering, 1893
‘Gray’ Ihering, 1893. Arch. Naturg. 59(1): 118.
(reference to Anodon susannae Griffith & Pidgeon, 1833)

Anodontites (s.s.) trapesialis forbesianus — Mansur (1970)
Anodontites trapesialis forbesianus — Ramírez et al. (2003)

Anodon auserinus Corsi, 1900
‘Spix’ Corsi, 1900. Anais Mus. Nac. Montevideo 2: 456.
(error for Anodon anserinus Wagner, 1827)

Anodonta troperziali Corsi, 1900
‘Lamarck’ Corsi, 1900. Anais Mus. Nac. Montevideo 2: 456.
(error for Anodonta trapesialis Lamarck, 1819)

Anodonta trapezialis v. cigneiformis Corsi, 1900
‘Pilsbry’ Corsi, 1900. Anais Mus. Nac. Montevideo 2: 455.
(error for Glabaris trapesialis var. cygneiformis Pilsbry, 1896)

Anodonta troperziali, var. exotica Corsi, 1900
‘Lamarck’ Corsi, 1900. Anais Mus. Nac. Montevideo 2: 456, fig. 37.
(reference to Anodonta exotica Lamarck, 1819)

Anodontites (s.s.) riograndensis — Ortmann (1921)
Anodontites (s.s.) trapesialis forbesianus — Mansur (1970)

Glabaris trapesialis var. cygnaeformis Simpson, 1900
‘Pilsbry’ Simpson, 1900. Proc. U.S. Nat. Mus. 22: 925.
‘Pilsbry’ Simpson, 1914. Descr. Cat. Naiades: 1432.
(error for Glabaris trapesialis var. cygneiformis Pilsbry, 1896)

Anodontites trapesialis — Simone (1994)

Glabaris trapesialis var. cygneyformis Ramírez et al., 2003
‘Pilsbry’ Ramírez et al., 2003. Rev. Biol. Trop. 51: 273.
(error for Glabaris trapesialis var. cygneiformis Pilsbry, 1896)

Anodontites susanae Simone, 2006
‘Gray’ Simone, 2006. Land. Freshw. Moll. Brazil.: 282.
(error for Anodon susannae Griffith & Pidgeon, 1833)