Page last updated
Thu 05 May 2022

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!

This page reports the specimens in the MUSSELpdb and provides a map if geocodes are known. The taxonomic history reports the record of different names and combinations that have been applied to this species (and its synonyms) since 2007.

Search the database pages:

Unionoida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Quadrula

species Quadrula couchiana (Lea, 1860): specimens
     2 nominal species as synonyms

Taxonomic History (since 2007)

Amphinaias couchianaGraf & Cummings (2007), Cummings & Graf (2010)
Quadrula couchianaBogan (2010), Haag (2012), ITIS (2012), Williams et al. (2017), Lopes-Lima et al. (2019), Tiemann et al. (2020), Graf & Cummings (2021), FMCS (2021)

Range: Rio Grande, western Gulf Coastal Plain, south into northern Mexico.

Map of Georeferenced Specimens
species map



Rio Salado, Mexico


Salinas River, Mexico


Mexico: Coahuila. Rio Salado de Nadadores, 0.5 mi S Progresso on road to HW 57 [distance from HW 57 is 14.6 mi]

UTEP_4856 Rio Salado, 8 miles (directly) SE of Anahuac, where roadfrom Anahuac-La Gloria Road to Ejido Nuevo Anaahuac crosses road

UTEP_4841 Rio Salado, ca. 0.5 miles E of Presa (= Dam) Don Martin at vado (ford) to small village on south bank

UTEP_4848 Salado River, 18.3 miles NW (by road) NW of junction of Anahuac Road with Mexico Highway 85 at La Gloria (= 14 miles SE of village of Analhuac), S side of road



Texas, USA



UTEP_5899 Gravels of Pierce crossing of Pecos River, W of river and SE of road

UTEP_3590 N and S of Malaga Bend Road, on W side of Pecos River bridge at Pierce Crossing

UTEP_6968 Pecos River at Harroun Crossing; 1.75 miles NE of Malaga

UTEP_3621 Pecos River below McMillan Dam

UTEP_8489 Pecos River below McMillan Dam

UTEP_4869 Rio Grande, immediately west of campground below Falcon Dam

UTEP_7416 gravel quarry along W side, Pecos R., at Pierce Rossing

Page updated: 08:20:49 Thu 05 May 2022

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