Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio caffer nominal species Unio gratiosus Küster, 1861
‘Parreiss in sched.’ Küster, 1861, Conchyl. Cab. 9(2): 239, pl. 80, fig. 3.
(homonym of Unio gratiosus Philippi, 1843)
= Unio caffer Taxonomic Opinions
+ Unio diminutus Lea, 1859 — Pilsbry & Bequaert, 1927
+ Unio diminutus Lea, 1859 — Jickeli, 1874
= Unio gratiosus Parreiss — Küster, 1861
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