Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Uniomerus
11 available nominal species synonyms (20 total synonyms)
Uniomerus tetralasmus — Graf & Cummings (2007), Tiemann et al. (2007), Williams et al. (2008), Watters et al. (2009), Bogan (2010), ... Dai et al. (2025), Chen et al. (2025), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Uniomerus declivis — Watters et al. (2009)
U. tetralasmus — Marshall et al. (2018)
Widespread in eastern North America, from Lake Erie south to the Gulf of Mexico and west to Colorado. (North America: NA2 NA4)


USNM_85354
New Orleans, La
topotype
Unio camptodon Say, 1832

USNM_85365
Jackson, Miss.
type
Unio jamesianus Lea, 1857

MCZ_169447
Chihuahua, 60 mi from Camp Ringgold, Mexico
lectotype
Unio manubius Gould, 1855

ANSP_42847
Jackson, Miss.
holotype
Unio porrectus Conrad, 1854

ANSP_42852
small creek in Greene Co., Ala.
type
Unio rivularis Conrad, 1853

USNM_85356
Scioto R., Ohio
paratype
Unio sayii Ward in Tappan, 1839

ANSP_41406
Canadian Fork, Arkansas River
holotype
Unio subcroceus Conrad, 1854

USNM_85604
Alexandria, La
type
Unio symmetricus Lea, 1845

USNM_85709
Chihuahua, 60 mi from Camp Ringgold, Mexico
paralectotype
Unio manubius Gould, 1855
UF_438436 (UtetBaP011). (COI: MH633653, ITS1, 5.8S: MH362659, ND1: MH633605, go to GenBank) USA, Mississippi, Hinds County, Tallahalla Creek at MP 29.69, about 8.6 km S of Raymond (32.18353, -90.40645).
UF_438303 (UtetCol005). (COI: MH633631, ITS1, 5.8S: MH362487, ND1: MH633583, go to GenBank) USA, Texas, Travis County, Unnamed tributary of Hams Branch at Cameron Road, trib of Wilbarger Creek (30.3652663, -97.619918).
JBFMC_8586_3. (16S: PQ238822, go to GenBank) USA: Texas, Red River.