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Wed 1 October 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Unionini | Unio pictorum

nominal species Unio michaudiana Des Moulins, 1833

= Unio pictorum

Taxonomic Opinions

+ Unio pictorum (Linnaeus, 1758) — He & Zhuang, 2013

+ Unio pictorum platyrhynchoideus [sic] Dupuy, 1849 — Haas, 1940

+ Unio michaudi Des Moulins — Germain, 1931

+ Unio (sec. Lymnium) pictorum (Linnaeus, 1758) — Simpson, 1914

+ Unio (sec. Lymnium) pictorum (Linnaeus, 1758) — Simpson, 1900

= Unio (Groupe de l’U. tumens) michaudianus Des Moulins — Locard, 1893

= Unio michaudianus Des Moul. — Westerlund, 1890

= Unio (Hispaniana) michaudianus Des Moulins — Locard, 1889

+ Margaron (Unio) tumidus (Retz.) — Lea, 1870

= Unio (Lymnium) tumidus var. B michaudianus Des Moulins — Moquin-Tandon, 1855

+ Margaron (Unio) tumidus (Retz.) — Lea, 1852

= Unio michaudii [sic] Desm. — Zelebor, 1851

+ Unio tumidus Retz. — Rossmässler, 1844

+ Margarita (Unio) ovalis Flem. Sow. — Lea, 1838

+ Margarita (Unio) ovalis Flem. — Lea, 1836