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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 donaciformis (Lea, 1828): synonymy
     2 specimens + 34 Genbank vouchers

Unio donaciformis Lea, 1828
Lea, 1828. Trans. Amer. Phil. Soc. 3 [O. 1]: 267 [9], pl. 4, fig. 3.
Type(s): HOLOTYPE USNM_84457, Cincinnati, Ohio.

Plagiola (Amygdalonaias) donaciformisSimpson (1900), Simpson (1914)
Unio (s.s.) donaciformisCall (1900)
Plagiola (Amygdalonajas) [sic] donaciformisOrtmann (1909)
Amygdalonajas [sic] donaciformisOrtmann (1914)
de Gregorio (1914)
Amygdalonaias donaciformisUtterback (1916)
Truncilla donaciformisOrtmann & Walker (1922), Ortmann (1924), Ortmann (1925), Frierson (1927), F.C. Baker (1928), ... Gasparini et al. (2020), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), Saxon et al. (2023)
Truncilla dociformes [sic]Hauck et al. (2023)

Unio zigzag Lea, 1829
Lea, 1829. Trans. Amer. Phil. Soc. 3 [O. 1]: 440, pl. 12, fig. 19 [as ‘zig-zag’].
Type(s): FIGURED SYNTYPE USNM_84459, Cincinnati, Ohio.

Plagiola (Amygdalonaias) donaciformisSimpson (1900), Simpson (1914)
Unio (s.s.) donaciformisCall (1900)
Unio zig-zagde Gregorio (1914)
Amygdalonaias donaciformisUtterback (1916)
Truncilla donaciformisOrtmann & Walker (1922), Frierson (1927), F.C. Baker (1928), Murray & Leonard (1962), Haas (1969), ... Parmalee & Bogan (1998), R.I. Johnson (1999), Williams et al. (2008), Watters et al. (2009), IUCN (2012)

Unio nervosa Conrad, 1834
‘Rafinesque’ of Authors.
Conrad, 1834. New Fresh-Water Shells: 70.
Say, 1834. Amer. Conch. 6: ??.
Lapham, 1852. Trans. WI Agri. Soc. 2: 369.
Agassiz, 1852. Arch. Naturg. 18(1): 48.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
(misidentified reference to Unio (Leptodea) nervosa Rafinesque, 1820)

Plagiola (Amygdalonaias) donaciformisSimpson (1900), Simpson (1914)
Truncilla donaciformisFrierson (1927), F.C. Baker (1928), Haas (1969), Parmalee & Bogan (1998), Watters et al. (2009)

Unio ziczac Hanley, 1843
‘Lea’ of Authors.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 183.
Sowerby, 1866. Conch. Icon. 16: pl. 34, sp. 213.
(error for Unio zigzag Lea, 1829)

Truncilla donaciformisFrierson (1927)

Unio zig-zag var. illius de Gregorio, 1914
de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 4, figs. 3a-c.
(intro'd as intra-sp. of Unio zigzag Lea, 1829)

Unio zig-zag var. illiusde Gregorio (1914)
Truncilla donaciformisWatters et al. (2009)

Truncilla dociformes Hauck et al., 2023
Hauck et al., 2023. PeerJ 11: fig. 7.
(error for Unio donaciformis Lea, 1828)

Taxonomic History (since 1900)

Plagiola (Amygdalonaias) donaciformisSimpson (1900), Simpson (1914)
Unio (s.s.) donaciformisCall (1900)
Plagiola (Amygdalonajas) [sic] donaciformisOrtmann (1909)
Amygdalonajas [sic] donaciformisOrtmann (1914)
de Gregorio (1914)
Unio zig-zagde Gregorio (1914)
Unio zig-zag var. illiusde Gregorio (1914)
Amygdalonaias donaciformisUtterback (1916)
Truncilla donaciformisOrtmann & Walker (1922), Ortmann (1924), Ortmann (1925), Frierson (1927), F.C. Baker (1928), ... Gasparini et al. (2020), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), Saxon et al. (2023)
Truncilla dociformes [sic]Hauck et al. (2023)

 
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