MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Wed 04 February 2026
Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio mancus
nominal species Unio triffoiricus var. mayennensis Germain, 1904
Unio triffoiricus var. mayennensis Germain, 1904 = Unio mancus
Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 279 [41], pl. 2, fig. 38.
(intro'd as intra-sp. of Unio triffoiricus Bourguignat in Locard, 1889)
Taxonomic Opinions
= Unio (Hispaniana) triffoiricus mayennensis — Germain, 1904
