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nominal species Unio roseni Kobelt, 1912

Unio roseni Kobelt, 1912 = Unio crassus

Kobelt, 1912. Icon. Land- und Süssw.-Moll. 18: 27, pl. 492, fig. 2627.
LECTOTYPE SMF 10976 (by Zilch, 1967: 67), near former Kuriazh monastery, W Kjharvin, Ukraine.

Taxonomic Opinions

+ Unio crassus Philipsson, 1788 — Nagel, 2025: 142, fig. 119.

lectotype SMF 10976/1v (by Zilch, 1967: 67) — Ukraine, “Aufenthalt in der Nähe des Klosters Kuresck bei Charkow im Gebiet des Donetz” [near former Kuriazh monastery, 49°59’N 036°06’E] (coll. O. Boettger (54) ex O. von Rosen 1892)

paralectotype SMF 10977/1v (coll. W. Kobelt)

paralectotypes SMF 345483/2v (ex SMF 10977)

+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024: suppl. append. 2, p. 10.

+ Unio crassus gontieri Bourguignat — Haas, 1969: 53.

+ Unio crassus gontieri Bourguignat, 1856 — Haas, 1940: 132.

= Unio (s.s.) crassus var. roseni Kobelt, 1912 — Zhadin, 1938: 91, sp. 3h.