| Page last updatedWed 1 October 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 | Unionoida | Unionoidea | Unionidae | Ambleminae | Popenaiadini genus Nephronaias Crosse & Fischer, 1894: species3 available nominal genus synonyms (6 total synonyms) | cladomics
 |  Nephronaias aeruginosa (Morelet, 1849) syonymy (1 available, 1 total) | specimens (13)
 Range: Chiapas, Mexico. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias aztecorum (Philippi, 1847) syonymy (6 available, 10 total) | specimens (75)
 Range: Vera Cruz, Mexico. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias calamitarum (Morelet, 1849) syonymy (5 available, 12 total) | specimens (45)
 Range: Southern Mexico to Guatemala. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias caldwellii (Lea, 1858) syonymy (2 available, 2 total) | specimens (33)
 Range: Widely distributed in Pacific drainages from Mexico, Guatemala, and Nicaragua to Panama. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias chapalanus (Martens, 1900) syonymy (2 available, 2 total) | specimens (5)
 Range: Lago de Chapala and the Río Armeria, Mexico. (Central America)
 |  |  Nephronaias copanensis (Martens, 1900) syonymy (1 available, 1 total) | specimens (8)
 Range: Honduras. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias dysonii (Lea, 1859) syonymy (2 available, 2 total) | specimens (80)
 Range: Widespread from northern Belize, south to Guatemala and Honduras. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias flucki Bartsch, 1906 syonymy (1 available, 1 total) | specimens (15)
 Range: Nicaragua. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias goascoranensis (Lea, 1858) syonymy (5 available, 8 total) | specimens (76)
 Range: Guatemala to Nicaragua. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias hjalmarsoni (Dunker, 1858) syonymy (1 available, 2 total) | specimens (9)
 Range: Caribbean drainages in Honduras. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias macnielii (Lea, 1869) syonymy (1 available, 2 total) | specimens (30)
 Range: Nicaragua and Costa Rica.. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias ortmanni (Frierson, 1913) syonymy (1 available, 1 total) | specimens (27)
 Range: Río Motagua, Guatemala. (Central America)
 |  |  Nephronaias ravistella (Morelet, 1849) syonymy (4 available, 5 total) | specimens (67)
 Range: Mostly Guatemala and Honduras. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias rowellii (Lea, 1859) syonymy (1 available, 1 total) | specimens (6)
 Range: Endemic to the Chagres Basin, Panama. (Central America)
 |  |  Nephronaias sallei (Crosse & Fischer, 1894) syonymy (1 available, 1 total) | specimens (14)
 Range: Río Usumacinta basin, Mexico and Guatemala. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias scamnata (Morelet, 1849) syonymy (3 available, 5 total) | specimens (117)
 Range: Cuba. (Central America)
 IUCN Red List: Data Deficient
 other links:  MolluscaBase
 |  |  Nephronaias tehuantepecensis (Crosse & Fischer, 1894) syonymy (1 available, 1 total) | specimens (2)
 Range: Pacific southern Mexico. (Central America)
 other links:  MolluscaBase
 |  |  Nephronaias tempisquensis Pilsbry, 1920 syonymy (1 available, 1 total) | specimens (9 + 2 Genbank vouchers)
 Range: Costa Rica. (Central America)
 Genbank sequences: 16S, 28S, COI, COII
 other links:  MolluscaBase
 |  |  Nephronaias yzabalensis (Crosse & Fischer, 1893) syonymy (1 available, 1 total) | specimens (14)
 Range: Guatemala. (Central America)
 other links:  MolluscaBase
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