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Taxonomy

Species & Genus Richness by
Taxonomy

Geography

Species Richness & Endemism by
Geography

Data last updated
Thu 18 Dec 2025

nominal species Unio crocodilorum var. B semipustulata Fischer & Crosse, 1894

Unio crocodilorum var. B semipustulata Fischer & Crosse, 1894 = Psoronaias crocodilorum

Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(16): 578, pl. 60, fig. 4.
(intro'd as intra-sp. of Unio crocodilorum Morelet, 1849)
Type(s): HOLOTYPE BMNH_1893-2-4-2032, River Usumacinta, Guatemala.

= Psoronaias crocodilorum

Taxonomic Opinions

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

+ Psoronaias crocodilorum (Morelet, 1849) — Haas, 1969

+ Psoronaias crocodilarum [sic] (Morelet) — Haas, 1929

+ Psoronaias crocodilorum (Morelet, 1849) — Frierson, 1927

+ Unio (Psoronaias) crocodilorum Morelet, 1849 — Martens, 1900

= Unio (Psoronaias) crocodilorum var. B, semipustulata — Fischer & Crosse, 1894

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