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
Thu 22 January 2026
Bivalvia | Sphaeriida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Euglesa equilateralis
nominal species Pisidium equilaterale Prime, 1852
Pisidium equilaterale Prime, 1852 = Euglesa equilateralis
Prime, 1852. Boston J. Nat. Hist. 6(3): 366, pl. 12, figs. 23-25.
Prime, 1865. Smithsonian Misc. Coll. (145): 63, figs. 65-66 [as ‘æquilaterale’].
Taxonomic Opinions
= Pisidium equilaterale Prime, 1852 — ITIS, 2012
= Pisidium equilaterale Prime, 1852 — IUCN, 2011
= Pisidium equilaterale Prime, 1852 — Bogan, 2010
= Pisidium (Cyclocalyx) equilaterale Prime, 1851 — Mackie, 2007
= Pisidium equilaterale Prime, 1852 — Turgeon et al., 1998
= Pisidium equilaterale Prime — Mackie et al., 1980
= Pisidium (Cyclocalyx) equilaterale Prime, 1852 — Burch, 1975
= Pisidium (Cyclocalyx) equilaterale Prime, 1852 — Clarke, 1973
= Pisidium aequilaterale [sic] Prime, 1851 — Herrington, 1962
= Pisidium æquilaterale [sic] Prime — Prime, 1895
= Pisidium æquilaterale Prime — Prime, 1870
= Pisidium æquilaterale [sic] Prime — Prime, 1865
= Pisidium equilaterale Nobis — Prime, 1852
