Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Nephronaias
9 specimens + 2 GenBank vouchers

Pilsbry, 1920. Proc. Acad. Nat. Sci. 72: 9, fig. 6.
Type(s): LECTOTYPE [AS HOLOTYPE] ANSP_105225 (by R.I. Johnson, 1980: 278), Rio Tempisque, Filadelphia, Costa Rica.
Nephronaias tempisquensis — Pilsbry (1920), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Freeman et al. (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Nephronaias (s.s.) tempisquensis — Haas (1969)
Nephronaias tempisquensis — Pilsbry (1920), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Freeman et al. (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Nephronaias (s.s.) tempisquensis — Haas (1969)