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nominal species Unio littoralis var. minor Rossmässler, 1842

Unio littoralis var. minor Rossmässler, 1842 = Unio crassus

(intro'd as intra-sp. of Unio littoralis Cuvier, 1798; homonym of Unio margaritifer var. minor Rossmässler, 1835)
Rossmässler, 1842. Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, figs. 744. [in part]
SYNTYPE SMF 10949, Schulensee, near Kiel, Germany.

Taxonomic Opinions

+ Unio crassus Philipsson, 1788 — Nagel, 2025.

syntype SMF 10949/1 — Germany, “aus einem See be kiel” [Schulensee..., 54°17.3’N 010°05.5’E] (coll. E.A. Rossmässler [ex Tischbein 27.vi.1841? ex A. Müller?])

= Unio (Tumidusiana) tumidus var. minor Rossmaessler, 1835 — Stadnichenko, 1984: 89, fig. 29, 2.

+ Unio (sec. Lymnium) (Group U. littoralis) batavus (Maton and Rackett) — Simpson, 1914: 572.

+ Unio (sec. Lymnium) batavus Maton and Rackett — Simpson, 1900: 698.