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 | 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: [web].
= Pisidium equilaterale Prime, 1852 — IUCN, 2011: [web].
= Pisidium equilaterale Prime, 1852 — Bogan, 2010: [web].
= Pisidium (Cyclocalyx) equilaterale Prime, 1851 — Mackie, 2007: 301, 86, figs. 8.95-8.99.
= Pisidium equilaterale Prime, 1852 — Turgeon et al., 1998: 47.
= Pisidium equilaterale Prime — Mackie et al., 1980: 7.
= Pisidium (Cyclocalyx) equilaterale Prime, 1852 — Burch, 1975: 7.
= Pisidium (Cyclocalyx) equilaterale Prime, 1852 — Clarke, 1973: 177, pl. 18, fig. 1.
= Pisidium aequilaterale [sic] Prime, 1851 — Herrington, 1962: 31, pl. 5, fig. 1; pl. 7, fig. 13.
= Pisidium æquilaterale [sic] Prime — Prime, 1895: 50.
= Pisidium æquilaterale Prime — Prime, 1870: 165.
= Pisidium æquilaterale [sic] Prime — Prime, 1865: 63, figs. 65-66.
= Pisidium equilaterale Nobis — Prime, 1852: 366, pl. 12, figs. 23-25.
