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Taxonomy

Margaritiferidae

Species & Genus Richness by
Taxonomy

Geography

Central America

Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | Unionoida | Hyrioidea | Hyriidae | Hyriinae | Rhipidodontini

genus Diplodon Spix in Wagner, 1827: synonymy

43 Recent freshwater species (43 total species)

Synonymy

Diplodon Wagner, 1827

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

Iridea Swainson, 1840

Swainson, 1840. Treat. Malacol.: 283-285, 379.
Type species: Unio granosa Bruguière, 1792 (monotypy) = Diplodon granosus

Rhipidodonta Mörch, 1853

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

Cyclomya Simpson, 1900

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

Bulloideus Simpson, 1900

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

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 hylaeus

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

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

Diptodon Lea, 1836

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

Ecuadoria Modell, 1942

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

Iridella Haas, 1969

‘Swainson’ Haas, 1969. Treatise on Invert. Paleo: N460.
(error for Iridea Swainson, 1840)
Type species: Unio granosa Bruguière, 1792 = Diplodon granosus

Rhipidiodonta Rumi et al., 2008

Rumi et al., 2008. Rev. Biol. Trop. 56(1): 84.
(error for Rhipidodonta Mörch, 1853)
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)
Diplodon — Simpson (1900), Bartsch (1906), Ihering (1910), F. Baker (1913), Simpson (1914), ... Bieler (2021), Wu et al. (2021), Breure et al. (2022), Bolotov et al. (2022), Torres et al. (2024)
Nodularia (s.s.) — Simpson (1900), Simpson (1914), Preston (1915)
Unio (Sphenonaias) — Martens (1900)
Unio — Corsi (1900)
Anodonta — Corsi (1900)
Anodontites (s.s.) — Simpson (1914)
Diplodon (Cyclomya) — Ortmann (1921), Haas (1930), Haas (1931), Pilsbry (1933)
Oxynaia — Haas (1924)
Lampsilis (Cyrtonaias) — Frierson (1927)
Hyridella — Haas (1930)
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)
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)
Diplodon (Rhipidiodonta) [sic] — Rumi et al. (2008)

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