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nominal species Unio pseudocrassus Haas, 1909

Unio pseudocrassus Haas, 1909 = Unio nanus

Haas, 1909. Beitr. Kenntn. Mittleleurop. Najadeen, Beilage zu... 41: 29.

Taxonomic Opinions

+ Unio nanus Lamarck, 1819 — Lopes-Lima et al., 2024: suppl. append. 2, p. 20.

+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1969: 51.

+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940: 131.

= Unio batavus pseudocrassus Haas — Kobelt & Haas, 1910: 40, pl. 469, fig. 2526.