species Atlanticoncha ochracea (Say, 1817): synonymy

Mytilus fluviatilis Gmelin, 1791

(homonym of Mytulus polymorphus fluviatilis Pallas, 1771)
Lister, 1685. Conch.: pl. 157, fig. 12. [pre-linnaean]
Gmelin, 1791. Syst. Nat. 1(6): 3359, sp. 34.

Lampsilis ochracea — R.I. Johnson (1947), R.I. Johnson (1980)
Lampsilis (s.s.) ochracea — R.I. Johnson (1970)
Leptodea ochracea — IUCN (2012)

Unio ochraceus Say, 1817

Say, 1817. Nich. Encyc. 2: [12,] pl. 2, fig. 8.
Say, 1819. Nich. Encyc. 4: [18,] pl. 2, fig. 8.
Say, 1858. [in] Binney, Compl. Writings T. Say: 51.
NEOTYPE MCZ_178838 (by R.I. Johnson, 1947: 153), Schuylkill River, near Philadelphia, Pennsylvania.

Lampsilis (s.s.) ochraceus — Simpson (1900)
Lampsilis ochracea — Ortmann (1909), Ortmann (1909), R.I. Johnson (1947), Burch (1975), R.I. Johnson (1980), Kat (1983), Kat & Davis (1984), ITIS (2012)
Lampsilis (s.s.) ochracea — Simpson (1914), Frierson (1927), Haas (1969), R.I. Johnson (1970)
Unio ochraceus — de Gregorio (1914)
Leptodea ochracea — Turgeon et al. (1988), Williams et al. (1993), Strayer & Jirka (1997), Turgeon et al. (1998), Bogan (2002), ... Haag (2012), Jones (2015), Williams et al. (2017), Smith et al. (2019), Graf & Cummings (2021)
Ligumia ochracea — Smith (2000)
Atlanticoncha ochracea — Smith et al. (2020), FMCS (2021), Hopper et al. (2023), FMCS (2025), Campbell & Lydeard (2026)

Lampsilis rosea Rafinesque, 1820

Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 299, footnote.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 44.

Lampsilis (s.s.) ochracea — Frierson (1927), Haas (1969), R.I. Johnson (1970)
Lampsilis ochracea — R.I. Johnson (1947)
Leptodea ochracea — Strayer & Jirka (1997)

Unio rosaceus Conrad, 1849

(homonym of Unio rosaceus De Kay, 1843)
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 153.
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 301.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 275, pl. 37, fig. 5.
HOLOTYPE (MONOTYPY) MCZ_178779, Savannah River, Georgia.

Lampsilis (s.s.) ochraceus — Simpson (1900)
Lampsilis (s.s.) ochracea — Simpson (1914), R.I. Johnson (1970)
Lampsilis (s.s.) splendida — Frierson (1927)
Lampsilis ochracea — R.I. Johnson (1947)

Unio troostensis Sowerby, 1866

(homonym of Unio troostensis Lea, 1834)
‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 38, sp. 210.

Lampsilis (s.s.) ochraceus — Simpson (1900)
Lampsilis (s.s.) ochracea — Simpson (1914)
Nodularia aegyptiacus — Frierson (1927)

Unio radiatus Barnes, 1823

(misidentified reference to Mya radiata Gmelin, 1791)
Barnes, 1823. Amer. J. Sci. 6 (1-2): 265.

Lampsilis (s.s.) ochracea — Frierson (1927)

Mytilus fluviatilus Conrad, 1853

(error for Mytilus fluviatilis Gmelin, 1791)
‘Lister’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.

Unio affinis Sowerby, 1868

(misidentified reference to Unio affinis Lea, 1852)
‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 63, sp. 318.

Lampsilis (s.s.) ochraceus — Simpson (1900)
Lampsilis (s.s.) ochracea — Simpson (1914)
Lampsilis ochracea — R.I. Johnson (1947)