Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Nephronaias dysonii

Frierson, 1927. Check List N. Amer. Naiades: 37, sp. 139.
Frierson, 1928. Nautilus 41(4): 139, pl. 2, fig. 2.
Type(s): LECTOTYPE [AS HOLOTYPE] UMMZ_108010, Rio Saja, 5 mi W Esmeralda, Guatemala.
+ Nephronaias dysonii (Lea, 1859) — Cummings et al., 2025: 253, pls. 48 middle left & right, 49.
= Nephronaias sajensis (Frierson, 1927) — Graf & Cummings, 2021: 20.
= Nephronaias sajensis Frierson, 1927 — Bogan, 2010: [23].
= Nephronaias sajensis (Frierson, 1927) — Graf & Cummings, 2007: 308.
= Nephronaias (s.s.) sajensis (Frierson, 1927) — Haas, 1969: 200.
= Elliptio (Nephronaias) sajensis (Frierson, 1927) — Frierson, 1927: 37, sp. 139.