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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): specimens
     2 available nominal species synonyms

Recent Taxonomic Opinions

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)

Range

Guatemala to southern Mexico.

Map of Georeferenced Specimens

species map


Guatemala

specimen
UF_507909

Rio De La Pasion, 5.5 miles east of Sayaxche, El Peten Department, Guatemala 16.536339, -90.103900

specimen
SMF_15030

Rio de la Pasion, Guatemala (Paso Real)

specimen
SMF_15028

Rio Usumacinta, Guatemala

specimen
SMF_15029

Rio Usumacinta, Guatemala


Mexico

specimen
UF_270396

Tabasco, Mexico