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Page last updated
Thu 3 September 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!

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Bivalvia | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Sphaerium

species Sphaerium occidentale (Lewis, 1856): synonymy
     0 specimens + 3 Genbank vouchers

Cyclas ovalis Prime, 1853
Prime, 1853. Proc. Boston Soc. Nat. Hist. 4: 276.
(homonym of Cyclas ovalis Férussac, 1807; renamed Cyclas occidentale Lewis, 1856)

Sphaerium occidentaleHerrington (1962)
Sphaerium (Herringtonium) occidentaleClarke (1973), Burch (1975)

Cyclas occidentale Lewis, 1856
‘Prime’ Lewis, 1856. Proc. Boston Soc. Nat. Hist. 6(1): 2.
Prime, 1865. Smithsonian Misc. Coll. (145): 41, fig. 34.
‘Prime’ Lewis, 1872. Proc. Acad. Nat. Sci. 24: 109.
(new name for Cyclas ovalis Prime, 1853)

Sphaerium occidentaleHerrington (1962), Mackie et al. (1980), Turgeon et al. (1998), Lee & Ó Foighil (2002), Mackie (2007), ... ITIS (2012), Clewing et al. (2013), Bespalaya et al. (2017), Saito et al. (2022), Bespalaya et al. (2022)
Sphaerium (Herringtonium) occidentaleClarke (1973), Burch (1975), Cooley & Ó Foighil (2000), Korniushin & Glaubrecht (2002), Lee & Ó Foighil (2003), Fuentealba-Jara et al. (2017), Bespalaya et al. (2023)

Sphaerium occidentale var. amphibium Sterki, 1907
Sterki, 1907. Proc. Ohio St. Acad. Sci. 4(8): ??. [nomen nudum]
(intro'd as intra-sp. of Cyclas occidentale Lewis, 1856)

Sphaerium (Herringtonium) occidentaleBurch (1975)

Taxonomic History (since 1900)

Sphaerium occidentaleHerrington (1962), Mackie et al. (1980), Turgeon et al. (1998), Lee & Ó Foighil (2002), Mackie (2007), ... ITIS (2012), Clewing et al. (2013), Bespalaya et al. (2017), Saito et al. (2022), Bespalaya et al. (2022)
Sphaerium (Herringtonium) occidentaleClarke (1973), Burch (1975), Cooley & Ó Foighil (2000), Korniushin & Glaubrecht (2002), Lee & Ó Foighil (2003), Fuentealba-Jara et al. (2017), Bespalaya et al. (2023)

 
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