MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Mon 2 March 2026
Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Elliptio
species Elliptio nigella (Lea, 1852): synonymy
Synonymy
Unio nigellus Lea, 1852
Lea, 1852. Proc. Amer. Phil. Soc. 5: 251. [nomen nudum]
Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 283 [39], pl. 24, fig. 42.
Type(s): LECTOTYPE USNM_85567, Chattahoochee, Columbus [Columbia], Ga.
Unio (sec. Elliptio) nigellus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) nigellus — Frierson (1927), Haas (1969)
Elliptio strigosus — Clench & Turner (1956)
Elliptio (s.s.) nigella — Burch (1975)
Elliptio nigella — Turgeon et al. (1988), Williams et al. (1993), Turgeon et al. (1998), Lydeard et al. (1999), Brim Box & Williams (2000), ... FMCS (2021), Hopper et al. (2023), MolluscaBase (2024), FMCS (2025), Campbell & Lydeard (2026)
Unio denigratus Lea, 1857
Lea, 1857. Proc. Acad. Nat. Sci. 9: 171.
Lea, 1859. Jour. Acad. Nat. Sci. 4 [O. 7]: 200 [18], pl. 23, fig. 83.
Type(s): HOLOTYPE USNM_85568, near Columbus, Ga.
Unio (sec. Elliptio) nigellus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) nigellus — Frierson (1927), Haas (1969)
Elliptio (s.s.) nigella — Burch (1975)
Elliptio nigella — Williams et al. (2008), Williams et al. (2011)
Taxonomic History (since 1900)
Unio (sec. Elliptio) nigellus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) nigellus — Frierson (1927), Haas (1969)
Elliptio strigosus — Clench & Turner (1956)
Elliptio (s.s.) nigella — Burch (1975)
Elliptio nigella — Turgeon et al. (1988), Williams et al. (1993), Turgeon et al. (1998), Lydeard et al. (1999), Brim Box & Williams (2000), ... FMCS (2021), Hopper et al. (2023), MolluscaBase (2024), FMCS (2025), Campbell & Lydeard (2026)
