MUSSELpdb

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Taxonomy

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Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae

Species & Genus Richness by
Taxonomy

Geography

Summary

North America

Central America

South America

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Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Quadrulini | Quadrulina | Quadrula

species Quadrula couchiana (Lea, 1860): specimens

1 available nominal species synonym (2 total synonyms)

Recent Taxonomic Opinions

Amphinaias couchiana — Graf & Cummings (2007), Cummings & Graf (2010)
Quadrula couchiana — Bogan (2010), ITIS (2012), Haag (2012), Williams et al. (2017), Lopes-Lima et al. (2019), ... Czaja et al. (2023), Neemuchwala et al. (2023), Hopper et al. (2023), FMCS (2025), Cummings et al. (2025)

Range

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

Map of Georeferenced Specimens

MUSSELp Specimen Records

Mexico

USA

USNM_709226. United States, New Mexico, Eddy County, Pecos River, below McMillan Reservoir Dam

Genbank Vouchers

There are no georeferenced Genbank vouchers for this species in the MUSSELpdb.