species Nephronaias copanensis (Martens, 1900): synonymy

Unio (Sphenonaias) tehuantepecensis var. copanensis Martens, 1900

Martens, 1900. Biol. Centr.-Amer., Moll.: 502, pl. 36, figs. 6-6a.
(intro'd as intra-sp. of Unio tehuantepecensis Crosse & Fischer, 1894)
Type(s): LECTOTYPE ZMB_220170 (by Cummings et al., 2025: 248), Copan, Honduras.

Unio (Sphenonaias) tehuantepecensis var. copanensis — Martens (1900)
Nephronaias copanensis — Simpson (1914), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Cummings et al. (2025)
Elliptio (Nephronaias) copanensis — Frierson (1927), Haas (1929)
Nephronaias (s.s.) copanensis — Haas (1969)