species Elliptio angustata (Lea, 1831): synonymy

Unio angustatus Lea, 1831

Lea, 1831. Trans. Amer. Phil. Soc. 4 [O. 1]: 114 [124], pl. 17, fig. 43.
Type(s): HOLOTYPE USNM_85896, Cooper R., S. Carolina.

Unio (sec. Elliptio) angustatus — Simpson (1900), Simpson (1914)
Unio angustatus — de Gregorio (1914)
Elliptio (s.s.) angustatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) lanceolata — R.I. Johnson (1970), Burch (1975)
Elliptio angustata — Turgeon et al. (1988), Williams et al. (1993), Turgeon et al. (1998), Bogan (2002), Graf & Cummings (2007), ... FMCS (2021), Hopper et al. (2023), MolluscaBase (2024), FMCS (2025), Campbell & Lydeard (2026)

Unio augustatus ‘Lea’ of Authors

‘Lea’ of Authors.
Ferussac, 1835. Mag. Zool. 5(59-60): 26.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [1].
(error for Unio angustatus Lea, 1831)

Unio subcylindraceus Lea, 1874

Lea, 1874. Proc. Acad. Nat. Sci. 25: 422.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 58 [62], pl. 20, fig. 57.
Type(s): FIGURED SYNTYPE USNM_85863, Rocky Creek, near Macon, Georgia.

Unio (sec. Elliptio) angustatus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) emmonsii — Frierson (1927), Haas (1969)
Elliptio (s.s.) lanceolata — R.I. Johnson (1970), Burch (1975)
Elliptio angustata — MolluscaBase (2024)