species Ortmanniana pectorosa (Conrad, 1834): synonymy

Bariosta vittatis Rafinesque, 1831

Rafinesque, 1831. Continuation: 2. [nomen dubium]
Rafinesque, 1864. [in] Binney & Tryon, reprint: 73.

Actinonaias pectorosa — Ortmann & Walker (1922)
Lampsilis (s.s.) pectorosa-biangularis — Frierson (1927)

Unio perdix Lea, 1834

Lea, 1834. Trans. Amer. Phil. Soc. 5 [O. 1]: 72 [184], pl. 11, fig. 31.
FIGURED SYNTYPE USNM_84857, Harpeth R., Tenn.

Lampsilis (sec. Eurynia) perdix — Simpson (1900)
Lampsilis pictus — Ihering (1901)
Nephronaias perdix — Ortmann (1912)
Lampsilis (Eurynia) (Group of L. ligamentina) perdix — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Ortmann (1924), Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008)
Lampsilis (s.s.) pectorosa — Frierson (1927)
Lampsilis (s.s.) pectorosa pectorosa — Haas (1969)

Unio pectorosus Conrad, 1834

Conrad, 1834. New Fresh-Water Shells: 37, pl. 6, fig. 1.
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 25, pl. 11, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.

Lampsilis (sec. Eurynia) perdix — Simpson (1900)
Lampsilis (Eurynia) (Group of L. ligamentina) perdix — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Burch (1975), R.I. Johnson (1980), ... Smith et al. (2019), Klymus et al. (2020), Bieler (2021), FMCS (2021), Hopper et al. (2023)
Lampsilis (s.s.) pectorosa — Frierson (1927)
Lampsilis (s.s.) pectorosa pectorosa — Haas (1969)
Ortmanniana pectorosa — Graf & Cummings (2021)
Lampsilis pectorosa — FMCS (2025), Campbell & Lydeard (2026)

Unio vittatus ‘Rafinesque’ of Authors

(error for Bariosta vittatis Rafinesque, 1831)
‘Rafinesque’ of Authors.
Ferussac, 1835. Mag. Zool. 5(59-60): 29.
Lea, 1852. Synopsis Fam. Naiades: 58.
Lea, 1870. Synopsis Fam. Naiades: 92.

Unio biangularis Lea, 1840

Lea, 1840. Proc. Amer. Phil. Soc. 1: 288.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 197, pl. 9, fig. 8 [as ‘biangulatus’].
LECTOTYPE USNM_86120 (by R.I. Johnson, 1974: 20), Caney Fork, Tennessee.

Lampsilis (s.s.) biangulatus — Simpson (1900)
Lampsilis (s.s.) biangularis — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008), Bieler (2021)
Lampsilis (s.s.) pectorosa-biangularis — Frierson (1927)
Lampsilis (s.s.) pectorosa biangularis — Haas (1969)

Unio biangulatus Lea, 1840

(error for Unio biangularis Lea, 1840)
Lea, 1840. Proc. Amer. Phil. Soc. 1: 288 [as ‘biangularis’].
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 197, pl. 9, fig. 8.

Lampsilis (s.s.) biangulatus — Simpson (1900)
Lampsilis (s.s.) biangularis — Simpson (1914)
Nephronaias pectorosa — Ortmann (1918)
Actinonaias pectorosa — Ortmann & Walker (1922), Parmalee & Bogan (1998), Williams et al. (2008), Bieler (2021)
Lampsilis (s.s.) pectorosa-biangularis — Frierson (1927)
Lampsilis (s.s.) pectorosa biangularis — Haas (1969)