Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio rivalis Drouët, 1884
Drouët, 1884, Suppl. Unionidae de Serbie: 13.
= Unio crassus Taxonomic Opinions
+ Unio crassus cytherea Küster, 1833 — Haas, 1969
+ Unio crassus cytherea Küster, 1833 — Haas, 1940
= Unio rivalis Drouët — Westerlund, 1890
= Unio rivalis Drouët — Kobelt, 1886
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