MUSSELpdb | nomainal sp. Unio oesiacus Locard, 1889

	Home \| About \| Database \| Mussel of the Month \| Publications & Presentations


MUSSELpdb
	Introduction Browse d'basing


Taxonomy
	all genera Unionidae Margaritiferidae Hyriidae Etheriidae Mycetopodidae Iridinidae Species & Genus Richness by Taxonomy


Geography
	Summary North America Central America South America Afrotropics North Eurasia East Asia Australasia Species Richness & Endemism by Geography

Page last updated
Thu 17 July 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 | ... | Unioninae | Unionini | Unio mancus

nominal species Unio oesiacus Locard, 1889

Locard, 1889. Contr. Faune Malacol. Franc. 13: 164 [58], 241 [135] [as ‘œsiacus’].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 198 [as ‘œsiacus’].
Type(s): LECTOTYPE MNHN_22425 (by Graf, 2011: 494), L’Oise, à Pontoise.

= Unio mancus

Taxonomic Opinions

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

+ Unio mancus requienii Michaud, 1831 — Prie, 2012

+ Unio pictorum pictorum (Linnaeus, 1758) — Haas, 1969

+ Unio pictorum pictorum (Linnaeus, 1758) — Haas, 1940

+ Unio requieni Michaud — Germain, 1931

= Unio (Groupe de l’U. gestroianus) œsiacus Locard — Locard, 1893

= Unio oesiacus Locard, 1889 — Westerlund, 1890

= Unio (Desfontainiana) œsiacus Locard, Nov. sp. — Locard, 1889

"Making the world a better place, one mollusk at a time."
	The MUSSEL Project — Home Page http://www.mussel-project.net/. Site developed and maintained by Dan Graf & Kevin Cummings. Funded by The National Science Foundation.