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Page last updated
Thu 3 September 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!

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Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Arotonaias

species Arotonaias encarpa (Lea, 1868): synonymy
     9 specimens

Unio (Plagiola?) imbricatus Mørch, 1861
Mørch, 1861. Malak. Blatt. 7: 205.
(homonym of Unio imbricatus Hislop, 1860)

Plagiola imbricatusSimpson (1900)
Unio (Arotonaias) imbricatusMartens (1900)
Plagiola (Arotonaias) imbricataSimpson (1914)
Arotonaias imbricataFrierson (1927), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021)
Pachynaias imbricataHaas (1929)
Haas (1969)
Arotonaias encarpaCummings et al. (2025)

Unio encarpus Lea, 1868
Lea, 1868. Proc. Acad. Nat. Sci. 20: 95.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 294 [54], pl. 42, fig. 105.
Type(s): LECTOTYPE USNM_84386 (by Johnson & Baker, 1973: 154), L. Nicaragua.

Plagiola (Ptychoderma) encarpusSimpson (1900)
Unio (Arotonaias) imbricatusMartens (1900)
Plagiola (Arotonaias) imbricataSimpson (1914)
Arotonaias imbricataFrierson (1927)
Haas (1969)
Arotonaias encarpaCummings et al. (2025)

Taxonomic History (since 1900)

Plagiola imbricatusSimpson (1900)
Unio (Arotonaias) imbricatusMartens (1900)
Plagiola (Ptychoderma) encarpusSimpson (1900)
Plagiola (Arotonaias) imbricataSimpson (1914)
Arotonaias imbricataFrierson (1927), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021)
Pachynaias imbricataHaas (1929)
Haas (1969)
Arotonaias encarpaCummings et al. (2025)

 
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