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Page last updated
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!

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Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Hamiota

species Hamiota perovalis (Conrad, 1834): synonymy
     3 specimens + 5 Genbank vouchers

Unio perovalis Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 43, pl. 2, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
Type(s): HOLOTYPE ANSP_56416, Alabama R.

Lampsilis (s.s.) perovalisSimpson (1900), Simpson (1914), Frierson (1927), Haas (1969)
Lampsilis perovalisTurgeon et al. (1988), Williams et al. (1993), IUCN (1996), Turgeon et al. (1998), Lydeard et al. (1999), Roe et al. (2002), Jones et al. (2005), Campbell et al. (2005), ITIS (2012)
Hamiota perovalisRoe & Hartfield (2005), Zanatta & Murphy (2006), Graf & Cummings (2007), Williams et al. (2008), Bogan (2010), ... Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), Hauck et al. (2023), FMCS (2025)

Unio placitus Lea, 1852
Lea, 1852. Proc. Amer. Phil. Soc. 5: 252. [nomen nudum]
Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 279 [35], pl. 23, fig. 38.
Type(s): HOLOTYPE USNM_85152, Alabama.

Lampsilis (sec. Eurynia) hydianusSimpson (1900)
Lampsilis (Eurynia) hydianaSimpson (1914)
Lampsilis (Ligumia) fasciata-hydianaFrierson (1927)
Ligumia siliquoidea stramineaHaas (1969)
Lampsilis hydianaR.I. Johnson (1980)
Hamiota perovalisWilliams et al. (2008)

Unio spillmanii Lea, 1861
Lea, 1861. Proc. Acad. Nat. Sci. 13: 39.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 98 [102], pl. 15, fig. 246.
Type(s): HOLOTYPE USNM_84925, Columbus, Mississippi.

Lampsilis (s.s.) clarkianusSimpson (1900)
Lampsilis (s.s.) clarkianaSimpson (1914)
Lampsilis (s.s.) spillmaniFrierson (1927)
Lampsilis (s.s.) spillmaniiHaas (1969)
Lampsilis altilisParmalee & Bogan (1998)
Hamiota perovalisRoe & Hartfield (2005), Williams et al. (2008)

Taxonomic History (since 1900)

Lampsilis (s.s.) perovalisSimpson (1900), Simpson (1914), Frierson (1927), Haas (1969)
Lampsilis (sec. Eurynia) hydianusSimpson (1900)
Lampsilis (s.s.) clarkianusSimpson (1900)
Lampsilis (Eurynia) hydianaSimpson (1914)
Lampsilis (s.s.) clarkianaSimpson (1914)
Lampsilis (Ligumia) fasciata-hydianaFrierson (1927)
Lampsilis (s.s.) spillmaniFrierson (1927)
Ligumia siliquoidea stramineaHaas (1969)
Lampsilis (s.s.) spillmaniiHaas (1969)
Lampsilis hydianaR.I. Johnson (1980)
Lampsilis perovalisTurgeon et al. (1988), Williams et al. (1993), IUCN (1996), Turgeon et al. (1998), Lydeard et al. (1999), Roe et al. (2002), Jones et al. (2005), Campbell et al. (2005), ITIS (2012)
Lampsilis altilisParmalee & Bogan (1998)
Hamiota perovalisRoe & Hartfield (2005), Zanatta & Murphy (2006), Graf & Cummings (2007), Williams et al. (2008), Bogan (2010), ... Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), Hauck et al. (2023), FMCS (2025)

 
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