MUSSELpdb
Taxonomy
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
Mon 2 March 2026
Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Quadrulini | Uniomerus tetralasmus
nominal species Unio parallelus Conrad, 1841
Unio parallelus Conrad, 1841 = Uniomerus tetralasmus
Conrad, 1841. Proc. Acad. Nat. Sci. 1: 20 [as ‘paralellus’].
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 297 [as ‘parallelus’].
(renamed Unio porrectus Conrad, 1854; homonym of Unio parallelus Sowerby, 1840; correct name for Unio paralellus Conrad, 1841)
Taxonomic Opinions
+ Uniomerus tetralasmus (Say, 1831) — Watters et al., 2009: 317.
+ Uniomerus tetralasmus (Say, 1830) — Williams et al., 2008: 746.
+ Uniomerus tetralasmus (Say, 1830) — Parmalee & Bogan, 1998: 241.
+ Uniomerus tetralasmus (Say, 1830) — Burch, 1975: 169.
+ Uniomerus tetralasmus (Say, 1831) — R.I. Johnson, 1972: 221.
+ Uniomerus tetralasmus (Say, 1831) — R.I. Johnson, 1970: 339.
+ Uniomerus tetralasmus (Say, 1831) — Haas, 1969: 209.
+ Elliptio (Uniomerus) tetralasmus (Say, 1831) — Frierson, 1927: 34.
+ Unio (sec. Uniomerus) tetralasmus Say, 1831 — Simpson, 1914: 705.
+ Unio (sec. Uniomerus) tetralasmus Say, 1830 — Simpson, 1900: 740.
+ — Lea, 1870: 63.
+ — Lea, 1852: 40.
