Bivalvia | Unionida | Hyrioidea | Hyriidae | Hyriinae | Rhipidodontini

genus Diplodon Spix in Wagner, 1827: synonymy

42 Recent freshwater species (45 total species)

Synonymy

Diplodon Wagner, 1827

Spix in Wagner, 1827. Test. Fluv. Brasil.: pl. 26.
Type species: Diplodon ellipticum Spix in Wagner, 1827 (sub. desig. by of Authors, 0) = Diplodon ellipticus

Rhipidodonta Mørch, 1853

(intro'd as sub-gen. of Unio Retzius, 1788)
Mørch, 1853. Cat. Conch. Yoldi 2: 47.
Type species: Unio paranensis Lea, 1834 (monotypy) = Diplodon paranensis

Cyclomya Simpson, 1900

(intro'd as sub-gen. of Diplodon Wagner, 1827)
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 885.
Simpson, 1914. Descr. Cat. Naiades: 1278.
Type species: Unio funebralis Lea, 1860 (orig. desig.) = Diplodon funebralis

Bulloideus Simpson, 1900

(intro'd as sub-gen. of Diplodon Wagner, 1827)
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 887.
Simpson, 1914. Descr. Cat. Naiades: 1286.
Type species: Unio bulloides Lea, 1859 (original designation) = Diplodon variabilis

Prodiplodon Marshall, 1928

Marshall, 1928. Proc. U.S. Nat. Mus. 74(2762): 1.
Type species: Prodiplodon singewaldi Marshall, 1928 = Diplodon longula

Eodiplodon Marshall, 1928

Marshall, 1928. Proc. U.S. Nat. Mus. 74(2762): 4.
Type species: Eodiplodon gardnerae Marshall, 1928 = Diplodon longula

Ecuadorea Marshall & Bowles, 1932

Marshall & Bowles, 1932. Proc. U.S. Nat. Mus. 82(5): 5.
Type species: Ecuadorea bibliana Marshall & Bowles, 1932 (orig. desig.) = Diplodon biblianus

Castalioides Marshall, 1934

Marshall, 1934. J. Washington Acad. Sci. 24(2): 78.
Type species: Castalioides laddi Marshall, 1934 (orig. desig.) = Diplodon biblianus

Schleschiella Modell, 1950

Modell, 1950. Arch. Moll. 79(4/6): 140.
Type species: Unio burroughianus Lea, 1834 (orig. desig.) = Diplodon burroughianus

Australis Bonetto et al., 1986

(intro'd as sub-gen. of Diplodon Wagner, 1827)
Bonetto et al., 1986. Bol. Soc. Biol. Concepción, Chile 57: 60.
Type species: Unio solidulus Philippi, 1869 (orig. desig.) = Diplodon solidulus

Diptodon Lea, 1836

(error for Diplodon Wagner, 1827)
Lea, 1836. Synopsis Fam. Naiades: 11 [corrected in the errata].
Type species: Diplodon ellypticum Spix in Wagner, 1827 = Diplodon ellipticus

Ecuadoria Modell, 1942

(error for Ecuadorea Marshall & Bowles, 1932)
‘Marsh. & Bowles’ Modell, 1942. Arch. Moll. 74(5/6): 186.
Type species: Ecuadorea bibliana Marshall & Bowles, 1932 = Diplodon biblianus

Rhipidiodonta Rumi et al., 2008

(error for Rhipidodonta Mørch, 1853)
Rumi et al., 2008. Rev. Biol. Trop. 56(1): 84.
Type species: Unio paranensis Lea, 1834 = Diplodon paranensis

Taxonomic History (since 1900)

The Taxonomic History lists the ways authors have classified the species currently assigned to Diplodon, since 1900.

Diplodon (s.s.) — Simpson (1900), Simpson (1914), Ortmann (1921), Haas (1930), Haas (1931), ... Martinez et al. (2004), Mansur & Pereira (2006), Rumi et al. (2008), Pereira et al. (2014), Torres et al. (2018)
Glabaris (s.s.) — Simpson (1900)
Diplodon (Cyclomya s.s.) — Simpson (1900), Simpson (1914)
Diplodon (Cyclomya sec. Bulloideus) — Simpson (1900), Simpson (1914)
Nodularia (s.s.) — Simpson (1900), Preston (1915)
Unio (Sphenonaias) — Martens (1900)
Unio — Corsi (1900)
Anodonta — Corsi (1900)
Diplodon — Bartsch (1906), Ihering (1910), F. Baker (1913), Simpson (1914), Marshall (1917), ... Bolotov et al. (2022), Torres et al. (2024), Nagel (2025), Campbell & Lydeard (2026), Prié et al. (2026)
Anodontites (s.s.) — Simpson (1914)
Diplodon (s.s.) (Group of D. lacteolus) — Simpson (1914)
Nodularia (s.s.) (Group of N. douglasiæ) — Simpson (1914)
Diplodon (Cyclomya) — Ortmann (1921), Haas (1930), Haas (1931), Pilsbry (1933)
Oxynaia — Haas (1924), Haas (1930)
Lampsilis (Cyrtonaias) — Frierson (1927)
Diplodon (Bulloideus) — Haas (1931), Thiele (1934), Haas (1969), Haas (1969)
Ecuadorea — Marshall & Bowles (1932), Modell (1950)
Diplodon (Rhipidodonta) — Thiele (1934), Morretes (1949), Parodiz & Bonetto (1963), Bonetto (1964), Bonetto (1965), Figueiras (1965), Haas (1969), Haas (1969), Bonetto & Mansur (1970), Mansur & Pereira (2006), Pereira et al. (2014), Torres et al. (2018)
Castalioides — Marshall (1934), Haas (1969)
Schleschiella — Modell (1950)
Diplodon (Schleschiella) — Haas (1969), Haas (1969)
Lanceolaria — Haas (1969)
Diplodon (Australis) — Parada & Peredo (2002), Pereira et al. (2014), Mansur et al. (2020)
Rhipidodonta — Simone (2006), Graf & Cummings (2007), Bogan (2010), IUCN (2011), Miyahira et al. (2019), Mansur et al. (2020), Bieler (2021), Torres et al. (2024), Nagel (2025)
Diplodon (Rhipidiodonta) [sic] — Rumi et al. (2008)