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nominal species Unio batavus kobeltianus Haas, 1913

Unio batavus kobeltianus Haas, 1913 = Unio nanus

(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)
Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 105.
HOLOTYPE SMF 10998, Red Main, near Emtmannsberg, Germany.

Taxonomic Opinions

+ Unio nanus Lamarck, 1819 — Nagel, 2025: 122, fig. 77.

holotype SMF 10998/1 — Germany, “aus dem Roten Main bei Emtmannsberg” [49°53.5’N 11°38.5’E] (coll. F. Haas, leg. F. Haas & E. Schawrz 22.vii.1912)

paratypes SMF 11022/16

paratypes SMF 11023/12

paratypes SMF 11024/26

paratype SMF 11061/1 — “Banz”

paratypes SMF 11025/25

paratypes SMF 11026/19

paratype SMF 10997/1 — “Rauhe Ebrach”

paratypes SMF 11028/11, 2v

paratype SMF 10996/1 — “Ailsbach” (leg. E. Enslin)

paratype SMF 373172/1 (ex SMF 10996)

paratypes SMF 16109/21

paratypes SMF 11027/23, 1v — “Lichtenfels”

paratypes SMF 11031/5, 4v — “Hallstadt”

paratypes SMF 11029/8, 2v

paratypes SMF 1389/7, 2v — “Ailsbach” (ex NHG Nürnberg, leg. Jäckel)

paratypes SMF 11030/6 — “Bamberg”

+ Unio nanus Lamarck, 1819 — Lopes-Lima et al., 2024: suppl. append. 2, p. 22.

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

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

= Unio batavus kobeltianus n. subsp. — Haas, 1913: 105.