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

nominal species Unio atrocostatus Reeve, 1864

Unio atrocostatus Reeve, 1864 = Megalonaias nervosa

specimen image from publication‘Lea’ Reeve, 1864. Conch. Icon. 16: pl. 4, sp. 13; errata [changed to ‘U. heros, Say’].
(error for Unio heros Say, 1829; misidentified reference to Unio atrocostatus Lea, 1845)

Taxonomic Opinions

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

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

+ Megalonaias gigantea gigantea (Barnes, 1823) — Haas, 1969: 285.

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

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

+ Quadrula (sec. Crenodonta) heros (Say, 1829) — Simpson, 1900: 771.

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