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Page last updated
Thu 17 July 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!


Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini

genus Epioblasma Rafinesque, 1831: synonymy
     28 Recent valid species (29 total species)

Epioblasma Rafinesque, 1831
Rafinesque, 1831. Continuation: 2.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 72.
Type species: Epioblasma biloba Rafinesque, 1831 = Epioblasma rangiana

Dysnomia Agassiz, 1852
Agassiz, 1852. Arch. Naturg. 18(1): 43.
Type species: Unio foliatus Hildreth, 1828 (sub. desig. by Simpson, 1900: 521) = Epioblasma flexuosa

Disnomia Bielz, 1869
Bielz, 1869. Verz. Moll. Samml. : 43.
(error for Dysnomia Agassiz, 1852)

Epiloblasma Meek, 1876
‘Rafinesque’ of Authors.
Meek, 1876. Rept. U.S. Geol. Surv. Terr. (Hayden) 9: 511.
Modell, 1964. Arch. Moll. 93: 96.
(error for Epioblasma Rafinesque, 1831)

Dysnomya Meek, 1876
Meek, 1876. Rept. U.S. Geol. Surv. Terr. (Hayden) 9: 512.
(error for Dysnomia Agassiz, 1852)

Pilea Simpson, 1900
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 522.
Simpson, 1914. Descr. Cat. Naiades: 22.
(intro'd as sub-gen. of Truncilla Rafinesque, 1819)
Type species: Unio personatus Say, 1829 (original designation) = Epioblasma personata

Truncillopsis Ortmann & Walker, 1922
Ortmann & Walker, 1922. Occ. Pap. Mus. Zool. Univ. Mich. (112): 65.
(intro'd as sub-gen. of Dysnomia Agassiz, 1852)
Type species: Truncilla triqueter Rafinesque, 1820 (orig. desig.) = Epioblasma triquetra

Scalenilla Ortmann & Walker, 1922
Ortmann & Walker, 1922. Occ. Pap. Mus. Zool. Univ. Mich. (112): 68.
Ortmann, 1924. Amer. Midl. Nat. 9(1): 43.
(intro'd as sub-gen. of Dysnomia Agassiz, 1852)
Type species: Unio sulcatus Lea, 1829 (orig. desig.) = Epioblasma obliquata

Obliquata Frierson, 1927
Frierson, 1927. Check List N. Amer. Naiades: 52.
(intro'd as sub-gen. of Quadrula Rafinesque, 1820)
Type species: Obliquaria (Scalenaria) obliquata Rafinesque, 1820 (orig. desig.) = Epioblasma obliquata

Penita Frierson, 1927
Frierson, 1927. Check List N. Amer. Naiades: 93.
(intro'd as sub-gen. of Dysnomia Agassiz, 1852)
Type species: Unio penitus Conrad, 1834 (orig. desig.) = Epioblasma penita

Torulosa Frierson, 1927
Frierson, 1927. Check List N. Amer. Naiades: 94.
(intro'd as sub-gen. of Dysnomia Agassiz, 1852)
Type species: Amblema torulosa Rafinesque, 1820 (orig. desig.) = Epioblasma torulosa

Capsaeformis Frierson, 1927
Frierson, 1927. Check List N. Amer. Naiades: 95.
(intro'd as sub-gen. of Dysnomia Agassiz, 1852)
Type species: Unio capsaeformis Lea, 1834 (orig. desig.) = Epioblasma capsaeformis

Dysonomia Paetel, 1890
‘Agassiz’
Paetel, 1890. Cat. Conch.-Samml. 3: 143.
(error for Dysnomia Agassiz, 1852)

Epilobasma Simpson, 1900
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 744.
(error for Epioblasma Rafinesque, 1831)

Pilaea Starobogatov, 1970
‘Lea’
Starobogatov, 1970. Fauna Moll. Continent.: 70.
(error for Pilea Simpson, 1900)

Taxonomic History (since 1900)

Truncilla (s.s.)Simpson (1900), Wright & Walker (1902), Simpson (1914)
Unio (s.s.)Call (1900)
Truncilla (Dysnomia)Simpson (1900), Simpson (1914)
Truncilla (Pilea)Simpson (1900), Ortmann (1909), Simpson (1914)
Truncilla (Scalenaria)Simpson (1900), Simpson (1914)
TruncillaOrtmann (1909), Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912), Vanatta (1915), Utterback (1916), Ortmann (1918)
Uniode Gregorio (1914), Henderson (1935)
EpioblasmaSimpson (1914), Turgeon et al. (1988), Cummings & Mayer (1992), Williams et al. (1993), Bogan (1993), ... Gasparini et al. (2020), Graf & Cummings (2021), FMCS (2021), Bieler (2021), Hopper et al. (2023)
Dysnomia (Pilea)Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Frierson (1927), Haas (1930), Haas (1969), Haas (1969)
Dysnomia (s.s.)Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Frierson (1927), Haas (1930), Haas (1969), Haas (1969)
Dysnomia (Scalenilla)Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Haas (1969)
Dysnomia (Truncillopsis)Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Frierson (1927), F.C. Baker (1928), Haas (1969), Haas (1969)
Dysnomia (Torulosa)Frierson (1927), Haas (1930), Haas (1969), Haas (1969)
Quadrula (Obliquata)Frierson (1927), Haas (1930), Haas (1969), Haas (1969)
Dysnomia (Penita)Frierson (1927), Modell (1957), Haas (1969), Haas (1969)
Dysnomia (Capsaeformis)Frierson (1927), Haas (1969), Haas (1969)
DysnomiaF.C. Baker (1928), Russell (1934), Murray & Leonard (1962), Stansbery (1970), Burch (1975), Gordon et al. (1979), Mackie et al. (1980), ITIS (2012)
Epioblasma (sec. Torulosa)Thiele (1934)
Epioblasma (sec. Truncillopsis)Thiele (1934)
Epioblasma (s.s.)Thiele (1934)
Epioblasma (sec. Pilea)Thiele (1934)
Epioblasma (sec. Scalenilla)Thiele (1934)
Epioblasma (sec. Capsaeformis)Thiele (1934)
Epioblasma (sec. Penita)Thiele (1934)
Plagiola (Epioblasma)Morrison (1969), R.I. Johnson (1978)
PleurobemaMorrison (1969), Vidrine (1993)
PlagiolaMorrison (1969), R.I. Johnson (1980), Oesch (1984)
ObliquariaBurch (1975)
Plagiola (Torulosa)R.I. Johnson (1978)
Plagiola (Pilea)R.I. Johnson (1978)
Plagiola (Truncillopsis)R.I. Johnson (1978)
Plagiola (s.s.)R.I. Johnson (1978)
Pleurobema (Sintoxia)Campbell & Lydeard (2012)

 
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