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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 | ... | Unionidae | Ambleminae | Popenaiadini | Psoronaias

species Psoronaias usumasintae (Crosse & Fischer, 1892): synonymy
     5 specimens

Unio usumasintae Crosse & Fischer, 1893
Crosse & Fischer, 1893. J. de Conch. 40: 294 [as ‘usumasintæ’].
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 574, pl. 63, fig. 4; pl. 67, fig. 5 [as ‘usumasintæ’].
(renamed Unio usumacintae Martens, 1900)

Quadrula (Rotundaria) usumasintæSimpson (1900), Simpson (1914)
Unio (Pleurobema) usumacintæMartens (1900)
Amblema (Psorula) usumasintaeHaas (1930)
Psorula usumasintaeGraf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Inoue et al. (2020), Freeman et al. (2025)
Psoronaias usumasintaeGraf & Cummings (2021), Czaja et al. (2023)

Unio usumacintae Martens, 1900
Crosse & Fischer, 1893. J. de Conch. 40: 294 [as ‘usumasintæ’].
Martens, 1900. Biol. Centr.-Amer., Moll.: 500 [as ‘usumacintæ’].
(new name for Unio usumasintae Crosse & Fischer, 1893)

Unio (Pleurobema) usumacintæMartens (1900)
Psoronaias usumacintaeFrierson (1927)
Rotundaria usumacintaeHaas (1929)
Psorula usumacintaeHaas (1969)

Taxonomic History (since 1900)

Quadrula (Rotundaria) usumasintæSimpson (1900), Simpson (1914)
Unio (Pleurobema) usumacintæMartens (1900)
Psoronaias usumacintaeFrierson (1927)
Rotundaria usumacintaeHaas (1929)
Amblema (Psorula) usumasintaeHaas (1930)
Psorula usumacintaeHaas (1969)
Psorula usumasintaeGraf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Inoue et al. (2020), Freeman et al. (2025)
Psoronaias usumasintaeGraf & Cummings (2021), Czaja et al. (2023)

 
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