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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 | ... | Unionidae | Ambleminae | Lampsilini | Truncilla

species Truncilla cognata (Lea, 1860): synonymy
     11 specimens + 23 Genbank vouchers

Unio cognatus Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 306.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 8]: 368 [50], pl. 65, fig. 193.
Type(s): HOLOTYPE USNM_85004, Rio Salado, N. Leon, Mexico.

Plagiola (Amygdalonaias) cognataSimpson (1900), Simpson (1914)
Unio (Lampsilis) cognatusMartens (1900)
Truncilla cognataFrierson (1927), Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Howells et al. (1996), ... Graf & Cummings (2021), FMCS (2021), Czaja et al. (2023), Hopper et al. (2023), Saxon et al. (2023)
Truncilla donaciformisR.I. Johnson (1999)
Truncilla cognatusHaag (2012)

Unio donaciformis Sowerby, 1866
‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 39, sp. 214.
(misidentified reference to Unio donaciformis Lea, 1828)

Plagiola (Amygdalonaias) cognataSimpson (1900)

Taxonomic History (since 1900)

Plagiola (Amygdalonaias) cognataSimpson (1900), Simpson (1914)
Unio (Lampsilis) cognatusMartens (1900)
Truncilla cognataFrierson (1927), Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Howells et al. (1996), ... Graf & Cummings (2021), FMCS (2021), Czaja et al. (2023), Hopper et al. (2023), Saxon et al. (2023)
Truncilla donaciformisR.I. Johnson (1999)
Truncilla cognatusHaag (2012)

 
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