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.

Taxonomic Opinions

+ Megalonaias nickliniana (Lea, 1834) — Cummings et al., 2025: 348, pl. 72 middle right.

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

= Megalonaias digitata Morelet, 1851 — Contreras-Arquieta, 2000: 44.

= Megalonaias nickliniana digitata (Morelet, 1851) — Haas, 1969: 286.

= Amblema digitata (Morelet, 1849) — Goodrich & van der Schalie, 1937: 45.

= Crenodonta digitata (Morelet) — Haas, 1929: 333.

= Amblema (Megalonaias) nickliniana-digitata (Morelet, 1851) — Frierson, 1927: 62, sp. 267a.

= Quadrula (sec. Crenodonta) digitata (Morelet, 1851) — Simpson, 1914: 822.

= Quadrula (sec. Crenodonta) digitata (Morelet, 1851) — Simpson, 1900: 770.

= Unio (Crenodonta) digitatus Morelet, 1851 — Martens, 1900: 492.

= Unio (Plectomerus) digitatus Morelet, 1851 — Fischer & Crosse, 1894: 563, pl. 60, fig. 1.

= Unio digitatus More. — B.H. Wright, 1888: [2].

+ — Lea, 1870: 63.

+ — Lea, 1852: 39.