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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!

Search the database pages:

Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Popenaias

species Popenaias berezai Inoue, Cummings, Tiemann, Miller, Johnson, Smith & Randklev, 2020: synonymy
     116 specimens + 88 Genbank vouchers

Unio popeii Fischer & Crosse, 1894
of Authors.
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(16): 605 [as ‘Unio (Graphonaias) popei’].
Martens, 1900. Biol. Centr.-Amer., Moll.: 504 [as ‘Unio (Nephronaias) popei’].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 738 [as ‘Unio (sec. Elliptio)’]. [in part]
Pilsbry, 1910. Proc. Acad. Nat. Sci. 61: 535. [in part]
Ortmann, 1912. Ann. Carnegie Mus. 8: 271 [as ‘Elliptio’].
Simpson, 1914. Descr. Cat. Naiades: 700 [as ‘Unio (sec. Elliptio)’]. [in part]
Frierson, 1927. Check List N. Amer. Naiades: 38 [as ‘Elliptio (Popenaias)’]. [in part]
Haas, 1929. Senckenbergiana 11: 330 [as ‘Elliptio (Popenaias)’]. [in part]
Haas, 1969. Das Tierreich 88: 201 [as ‘Nephronaias (Popenaias)’]. [in part]
Graf & Cummings, 2007. J. Moll. Studies 73: 308 [as ‘Popenaias’]. [in part]
Pfeiffer et al., 2019. Zool. Scripta 48: 504 [as ‘Popenaias’]. [in part]
(misidentified reference to Unio popeii Lea, 1857)

Popenaias berezaiInoue et al. (2020), Cummings et al. (2025)

Popenaias berezai Inoue et al., 2020
Inoue et al., 2020. Zootaxa 4816(4): 464, figs. 5-7, 8A, 9A.
Type(s): HOLOTYPE (ORIG. DESIG.) CNMO_8037, Rio Valles (= Rio Micos), Estacion Micos, San Luis Potosi, Mexico. 22.11417, -99.16166.

Popenaias berezaiInoue et al. (2020), Czaja et al. (2023), Cummings et al. (2025), Campbell & Lydeard (2026), Martínez et al. (2026)

Taxonomic History (since 1900)

Popenaias berezaiInoue et al. (2020), Czaja et al. (2023), Cummings et al. (2025), Campbell & Lydeard (2026), Martínez et al. (2026)

 
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