MUSSELpdb

Taxonomy

all genera

Summary

Species & Genus Richness of
freshwater mussels
by Taxonomy

Species & Genus Richness of
freshwater bivalves
by Family

Geography

Species Richness & Endemism of
freshwater mussels
by Geography

Data last updated
Fri 13 February 2026

nominal species Unio penitus Conrad, 1834

Unio penitus Conrad, 1834 = Epioblasma penita

Conrad, 1834. New Fresh-Water Shells: 33, pl. 5, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
Type(s): HOLOTYPE ANSP_59860, Alabama.

Taxonomic Opinions

= Epioblasma penita (Conrad, 1834) — FMCS, 2025: [3].

= Epioblasma penita (Conrad, 1834) — Hopper et al., 2023.

= Epioblasma penit a [sic] (Conrad, 1834) — Graf & Cummings, 2021: 17.

= Epioblasma penita (Conrad, 1834) — FMCS, 2021: [3].

= Epioblasma penita (Conrad, 1834) — Williams et al., 2017: 38.

= Epioblasma penita (Conrad, 1834) — ITIS, 2012: [web].

= Epioblasma penita — Haag, 2012: 72.

= Epioblasma penita Conrad, 1834 — Bogan, 2010: [13].

= Epioblasma penita — Cummings & Graf, 2010: 377.

= Epioblasma penita (Conrad, 1834) — Williams et al., 2008: 263.

= Epioblasma penita (Conrad, 1834) — Graf & Cummings, 2007: 306.

= Epioblasma penita (Conrad) — Jones et al., 2005: 89, Appendix 1.

= Epioblasma penita (Conrad, 1834) — IUCN, 2000: [web].

= Epioblasma penita (Conrad) — Lydeard et al., 1999: 127.

= Epioblasma penita (Conrad, 1834) — Turgeon et al., 1998: 34.

= Epioblasma penita (Conrad) — Williams et al., 1993: 11.

= Epioblasma penita (Conrad, 1834) — Turgeon et al., 1988: 30.

= Plagiola (s.s.) penita (Conrad, 1834) — R.I. Johnson, 1978: 254, pl. 10, figs. 8-15.

= Dysnomia penita (Conrad, 1834) — Burch, 1975: 18.

= Dysnomia (Penita) penita (Conrad, 1834) — Haas, 1969: 481.

= Dysnomia (Penita) penita (Conrad, 1834) — Haas, 1969: N453, fig. D46:7.

= Epioblasma (sec. Penita) penitum (Conrad) — Thiele, 1934: 837, [1274].

= Dysnomia (Penita) penita (Conrad, 1834) — Frierson, 1927: 93, sp. 428.

= Truncilla (s.s.) penita (Conrad, 1834) — Simpson, 1914: 8.

= Truncilla penita (Conrad, 1834) — Ortmann, 1912: 357.

= Truncilla (s.s.) penita Conrad — Simpson, 1900: 518.

= Unio penitus Con. — B.H. Wright, 1888: [4].

= Margaron (Unio) penitus (Con.) — Lea, 1870: 36.

= Unio penitus Conrad, 1834 — Reeve, 1864: pl. 14, sp. 55.

= Unio (Lampsilis) penitus Conr. — Adams & Adams, 1857: 495.

= Unio penitus Con. — Conrad, 1853: 254.

= Margaron (Unio) penitus (Con.) — Lea, 1852: 24.

= Unio penitus Conr. — Hanley, 1843: 183.

= Margarita (Unio) penitus Con. — Lea, 1838: 16.

= Margarita (Unio) penitus (Conrad, 1834) — Lea, 1836: 19.