Page last updated
Thu 3 September 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 | ... | Unionoidea | Unionidae | Unioninae | Anodontini | Alasmidontina | Arcidens

species Arcidens confragosus (Say, 1829): specimens
     2 available nominal species synonyms

Recent Taxonomic Opinions

Arcidens (s.s.) confragosus — Graf & Cummings (2007)
Arcidens confragosus — Tiemann et al. (2007), Williams et al. (2008), Watters et al. (2009), Bogan (2010), Cummings & Graf (2010), ... Graf & Cummings (2021), FMCS (2021), Whelan et al. (2023), Hopper et al. (2023), Perkins et al. (2025)
Arcidens confragosa — Inoue et al. (2014), FMCS (2025)
A. confragosus — Marshall et al. (2018)

Range

Widespread in Interior Basin and from Texas to Alabama in rivers draining to the Gulf of Mexico, USA.

Map of Georeferenced Specimens

USA

Georeferenced Genbank Vouchers

USA

JBFMC_12092_1. (16S: PQ238842, go to Genbank) USA: Louisiana, Bayou Pierre.

JBFMC_9543_1. (16S: PQ238840, COI: OK562095, go to Genbank) USA: Texas, Neches River.

JBFMC_9543_2. (16S: PQ238841, go to Genbank) ditto.