species Anodontites trapezea (Spix in Wagner, 1827): synonymy

Anodon trapezeus Spix in Wagner, 1827

(renamed Unio (Anodontes) spixii d’Orbigny, 1835)
Spix in Wagner, 1827. Test. Fluv. Brasil.: 28, pl. 20, fig. 1.
HOLOTYPE ZSM_MOLL_20041232, Rio Solimoes, Brazil.

Glabaris (s.s.) patagonicus — Simpson (1900)
Glabaris trapezea — Ihering (1910)
Anodontites (s.s.) patagonicus — Simpson (1914)
Anodontites (s.s.) trapezea — Ortmann (1921)
Anodontites (s.s.) trapezeus — Haas (1931), Haas (1949), Figueiras (1965), Haas (1969), Mansur (1970), Rumi et al. (2008), Pereira et al. (2014), Torres et al. (2018)
Anodontites (Styganodon) trapezeus — Morretes (1949)
Anodontites trapezia [sic] — Lucena (1951)
Anodontites trapezeus — Mansur et al. (1988), Ramírez et al. (2003), Simone (2006), Mansur & Pereira (2006), Graf & Cummings (2007), Lasso et al. (2009), Bogan (2010), Mansur et al. (2020)
Anodontites trapezea — Graf & Cummings (2021), Torres et al. (2024), Nagel (2025)

Anodon rotundus Spix in Wagner, 1827

(renamed Unio (Anodontes) spixii d’Orbigny, 1835)
Spix in Wagner, 1827. Test. Fluv. Brasil.: 28, pl. 20, figs. 2-4.
LECTOTYPE ZSM_MOL_20041233 (by Fechter, 1983: 233), Brasilien, Staat Sao Paulo.

Glabaris (s.s.) rotundus — Simpson (1900)
Anodontites (s.s.) rotundus — Simpson (1914)
Anodontites (s.s.) trapezea — Ortmann (1921)
Anodontites (s.s.) trapezeus — Haas (1931), Figueiras (1965), Haas (1969), Mansur (1970)
Anodontites trapezeus — Mansur et al. (1988), Ramírez et al. (2003), Simone (2006)
Anodontites trapezea — Nagel (2025)

Unio (Anodontes) spixii d’Orbigny, 1835

(new name for Anodon rotundus Spix in Wagner, 1827; new name for Anodon trapezeus Spix in Wagner, 1827)
d’Orbigny, 1835. Mag. Zool. 5(61-62): 39.

Anodontites (s.s.) spixii — Simpson (1914), Figueiras (1965)
Anodontites (s.s.) trapezeus — Haas (1931), Haas (1969), Mansur (1970)
Anodontites (s.s.) trapezeus spixii — Quintana (1982)
Anodontites trapezeus — Ramírez et al. (2003), Simone (2006)

Anodon trapezius ‘Spix & Wagner’ of Authors

(error for Anodon trapezeus Spix in Wagner, 1827)
‘Spix & Wagner’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 53.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 221.
Lucena, 1951. Pap. Avuls. Dept. Zool. 10(3): 98.

Anodonta cailliaudii Lea, 1860

Lea, 1860. Proc. Acad. Nat. Sci. 12: 308.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 395 [31], pl. 45, fig. 297.
HOLOTYPE USNM_86705, Brazil.

Glabaris (s.s.) rotundus — Simpson (1900)
Anodontites (s.s.) rotundus — Simpson (1914)
Anodontites (s.s.) trapezeus — Haas (1931), Haas (1969), Mansur (1970)
Anodontites (s.s.) spixii — Figueiras (1965)
Anodontites (s.s.) trapezeus spixii — Quintana (1982)
Anodontites trapezeus — Ramírez et al. (2003), Simone (2006)

Anodonta rubicunda Lea, 1860

Lea, 1860. Proc. Acad. Nat. Sci. 12: 92.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 392, pl. 46, fig. 299.
HOLOTYPE USNM_86401, Uruguay River.

Glabaris (s.s.) rubicundus — Simpson (1900)
Anodonta rubicunda — Corsi (1900)
Anodontites (s.s.) rubicundus — Simpson (1914)
Anodontites (s.s.) patagonica rubicunda — Ortmann (1921)
Anodontites (s.s.) trapezeus — Haas (1931), Haas (1969), Mansur (1970)
Anodontites (Pachyanodon) patagonica rubicunda — Morretes (1949)
Anodontites (s.s.) patagonicus — Figueiras (1965)
Anodontites (s.s.) patagonicus patagonicus — Bonetto & Mansur (1970)
Anodontites (s.s.) trapezeus spixii — Quintana (1982)
Anodontites trapezeus — Ramírez et al. (2003), Simone (2006)

Anodonta pazii Lea, 1866

Lea, 1866. Proc. Acad. Nat. Sci. 18: 35.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 274, pl. 36, fig. 87.
HOLOTYPE USNM_86703, So. Am.

Glabaris (s.s.) pazii — Simpson (1900)
Anodontites (s.s.) pazii — Simpson (1914)
Anodontites (s.s.) patagonica rubicunda — Ortmann (1921)
Anodontites (s.s.) trapezeus — Haas (1931), Haas (1969), Mansur (1970)
Anodontites (s.s.) spixii — Figueiras (1965)
Anodontites (s.s.) trapezeus spixii — Quintana (1982)
Anodontites trapezeus — Ramírez et al. (2003), Simone (2006)

Glabaris trapezea var. caipira Ihering, 1893

(intro'd as intra-sp. of Anodon trapezeus Spix in Wagner, 1827)
Ihering, 1893. Arch. Naturg. 59(1): 58.
HOLOTYPE SMF_3829, Rio Piracicaba, Staat Sao Paulo, Brasilien.

Anodontites (s.s.) trapezeus — Haas (1931), Haas (1969), Mansur (1970)
Anodontites (s.s.) trapezeus spixii — Quintana (1982)
Anodontites trapezeus — Ramírez et al. (2003), Simone (2006)
Anodontites trapezea — Nagel (2025)

Glabaris trapezea var. sowerbyana Ihering, 1893

(intro'd as intra-sp. of Anodon trapezeus Spix in Wagner, 1827)
Ihering, 1893. Arch. Naturg. 59(1): 58.
HOLOTYPE SMF_3830, Brasilien.

Anodontites (s.s.) trapezeus — Haas (1931), Haas (1969), Mansur (1970)
Anodontites (s.s.) trapezeus spixii — Quintana (1982)
Anodontites trapezeus — Ramírez et al. (2003), Simone (2006)
Anodontites trapezea — Nagel (2025)

Anodonta trapezium ‘Mori.’ of Authors

(error for Anodon trapezeus Spix in Wagner, 1827; reference to Anodon trapezeus Spix in Wagner, 1827)
‘Mori.’ of Authors.

Anodon caillaudii G.B. Sowerby II, 1867

(error for Anodonta cailliaudii Lea, 1860)
‘Lea’ G.B. Sowerby II, 1867. Conch. Icon. 17: pl. 12, sp. 38.

Glabaris (s.s.) rotundus — Simpson (1900)
Anodontites (s.s.) trapezeus — Mansur (1970)

Anodon parii Sowerby, 1870

(error for Anodonta pazii Lea, 1866)
‘Lea’ Sowerby, 1870. Conch. Icon. 17: index.

Anodonta cailludi Ramírez et al., 2003

(error for Anodonta cailliaudii Lea, 1860)
‘Lea’ Ramírez et al., 2003. Rev. Biol. Trop. 51: 273.

Anodontites sowerbiana Simone, 2006

(error for Glabaris trapezea var. sowerbyana Ihering, 1893)
‘Ihering’ Simone, 2006. Land. Freshw. Moll. Brazil.: 283.