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
Mon 2 March 2026

nominal species Unio multiplicatus Lea, 1831

Unio multiplicatus Lea, 1831 = Megalonaias nervosa

specimen image from publication Lea, 1831. Trans. Amer. Phil. Soc. 4 [O. 1]: 70, pl. 4, fig. 2.

Taxonomic Opinions

+ Megalonaias nervosa (Rafinesque, 1820) — Pfeiffer et al., 2018: 147.

+ Megalonaias nervosa (Rafinesque, 1820) — Watters et al., 2009: 191.

+ Megalonaias nervosa (Rafinesque, 1820) — Williams et al., 2008: 451.

+ Megalonaias nervosa (Rafinesque, 1820) — Brim Box & Williams, 2000: 62.

+ Megalonaias nervosa (Rafinesque, 1820) — Parmalee & Bogan, 1998: 159.

+ Megalonaias nervosa (Rafinesque, 1820) — Howells et al., 1996: 81.

+ Megalonaias nervosa (Rafinesque, 1820) — Oesch, 1984: 73.

+ Megalonaias gigantea (Barnes, 1823) — Burch, 1975: 167.

+ Megalonaias gigantea gigantea (Barnes, 1823) — Haas, 1969: 284.

+ Megalonaias gigantea (Barnes, 1823) — F.C. Baker, 1928: 69.

+ Amblema (Megalonaias) gigantea (Barnes, 1823) — Frierson, 1927: 62.

+ Megalonaias gigantea (Barnes, 1823) — Ortmann & Walker, 1922: 8.

+ Megalonaias heros (Say) — Utterback, 1915: 125.

+ Quadrula (sec. Crenodonta) heros (Say, 1829) — Simpson, 1914: 826.

+ — de Gregorio, 1914: 43.

+ Quadrula heros Say — Ortmann, 1909: 100.

+ Quadrula (sec. Crenodonta) heros (Say, 1829) — Simpson, 1900: 770.

= Unio (s.s.) multiplicatus Lea, 1831 — Call, 1900: 448, pl. 15.

= Unio multiplicatus Lea, 1830-31 — Call, 1895: 29.

= Unio multiplicatus Lea — Singley, 1893: 318.

= Unio multiplicatus Lea — B.H. Wright, 1888: [4].

= Margaron (Unio) multiplicatus (Lea) — Lea, 1870: 29.

+ Unio plicatus Say — Sowerby, 1866: pl. 54, sp. 280.

+ Unio heros Say, 1829 — Reeve, 1864: pl. 2, sp. 8.

= Unio (Dysnomia) multiplicatus Lea — Adams & Adams, 1857: 498.

+ Unio heros Say — Küster, 1855: 136.

= Margaron (Unio) multiplicatus (Lea) — Lea, 1852: 20.

+ Unio heros Say — Hanley, 1843: 175.

+ Unio heros Say, 1829 — Conrad, 1840: 108.

= Margarita (Unio) multiplicatus Lea — Lea, 1838: 14.

= Margarita (Unio) multiplicatus (Lea, 1831) — Lea, 1836: 12.

+ Unio heros Say — Ferussac, 1835: 27.

= Unio multiplicatus — Jay, 1835: 16.