Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Quadrulini | Megalonaias nickliniana

nominal species Unio digitatus Morelet, 1851

Unio digitatus Morelet, 1851 = Megalonaias nickliniana

Morelet, 1851. Test. Nov. 2: 24.
Type(s): LECTOTYPE [AS HOLOTYPE] BMNH_93-2-4-2035 (by R.I. Johnson, 1971: 82), flumen Usumacinta, Peten, Guatemala.

= Megalonaias nickliniana

Taxonomic Opinions

+ Megalonaias nickliniana (Lea, 1834) — Cummings et al., 2025

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

= Megalonaias digitata Morelet, 1851 — Contreras-Arquieta, 2000

= Megalonaias nickliniana digitata (Morelet, 1851) — Haas, 1969

= Amblema digitata (Morelet, 1849) — Goodrich & van der Schalie, 1937

= Crenodonta digitata (Morelet) — Haas, 1929

= Amblema (Megalonaias) nickliniana-digitata (Morelet, 1851) — Frierson, 1927

= Quadrula (sec. Crenodonta) digitata (Morelet, 1851) — Simpson, 1914

= Quadrula (sec. Crenodonta) digitata (Morelet, 1851) — Simpson, 1900

= Unio (Crenodonta) digitatus Morelet, 1851 — Martens, 1900

= Unio (Plectomerus) digitatus Morelet, 1851 — Fischer & Crosse, 1894

= Unio digitatus More. — B.H. Wright, 1888

+ — Lea, 1870

+ — Lea, 1852