Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Psoronaias crocodilorum

nominal species Unio usumasintae Crosse & Fischer, 1893

Unio usumasintae Crosse & Fischer, 1893 = Psoronaias crocodilorum

Crosse & Fischer, 1893. J. de Conch. 40: 294 [as ‘usumasintæ’].
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 574, pl. 63, fig. 4; pl. 67, fig. 5 [as ‘usumasintæ’].
(renamed Unio usumacintae Martens, 1900)
Type(s): TYPE LOST XXX_UNKNOWN, in flumine Usumasinta, Provinciæ Peten dictæ, Guatemalæ.

Taxonomic Opinions

= Psoronaias usumasintae (Crosse & Fischer, 1892) — Campbell & Lydeard, 2026: 289.

= Psorula usumasintae (Crosse & Fischer, 1893) — Freeman et al., 2025: 246, Table 1.

+ Psoronaias crocodilorum (Morelet, 1849) — Cummings et al., 2025: 316.

= Psoronaias usumasintae (Crosse & Fischer, 1892) — Czaja et al., 2023: 88.

= Psoronaias usumasintae (Crosse & Fischer, 1892) — Graf & Cummings, 2021: 20.

= Psorula usumasintae — Inoue et al., 2020: 460.

= Psorula usumasintae (Crosse & Fischer, 1892) — Pfeiffer et al., 2019: 108.

= Psorula usumasintae Crosse & Fischer, 1892 — Bogan, 2010: [web].

= Psorula usumasintae (Crosse & Fischer, 1892) — Graf & Cummings, 2007: 309.

= Amblema (Psorula) usumasintae Cr. & F. — Haas, 1930: 319.

= Quadrula (Rotundaria) usumasintæ (Crosse & Fischer, 1892) — Simpson, 1914: 908.

= Quadrula (Rotundaria) usumasintæ (Crosse & Fischer, 1892) — Simpson, 1900: 796.

+ Unio (Pleurobema) usumacintæ Crosse & Fischer, 1892 — Martens, 1900: 500.

= Unio (Psoronaias) usumasintæ Crosse & Fischer, 1892 — Fischer & Crosse, 1894: 574, pl. 63, fig. 4; pl. 67, fig. 5.