species Lampsilis abrupta (Say, 1831): synonymy

Toxolasma cyclips Rafinesque, 1831

Rafinesque, 1831. Continuation: 2.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 72.

Lampsilis (Ortmanniana) abruptus — Frierson (1927)
Lampsilis (Ortmanniana) abrupta — Haas (1969)
Lampsilis abrupta — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Toxolasma cyclips var. fuscata Rafinesque, 1831

Rafinesque, 1831. Continuation: 2.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 72.
(intro'd as intra-sp. of Toxolasma cyclips Rafinesque, 1831)

Lampsilis abrupta — Watters et al. (2009)

Toxolasma cyclips var. lutescens Rafinesque, 1831

Rafinesque, 1831. Continuation: 2.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 72.
(intro'd as intra-sp. of Toxolasma cyclips Rafinesque, 1831)

Lampsilis abrupta — Watters et al. (2009)

Unio abruptus Say, 1831

Say, 1831. Amer. Conch. 2: pl. 17.
Type(s): TYPE LOCALITY TYPE_LOCALITY_MP_013, Wabash River.

Lampsilis (sec. Eurynia) orbiculatus — Simpson (1900)
Lampsilis (Eurynia) orbiculata — Simpson (1914)
Lampsilis (Ortmanniana) abruptus — Frierson (1927)
Lampsilis (Ortmanniana) abrupta — Haas (1969)
Lampsilis abruptus — Morrison (1969)
Lampsilis abrupta — R.I. Johnson (1980), Turgeon et al. (1988), Cummings & Mayer (1992), Williams et al. (1993), Vidrine (1993), ... Graf & Cummings (2021), FMCS (2021), Stodola et al. (2021), Hopper et al. (2023), FMCS (2025)
Ortmanniana abrupta — Campbell & Lydeard (2026)

Unio crassus Conrad, 1836

‘Say’ Conrad, 1836. Monogr. Fam. Unionidae 1(4): 34, pl. 16.
(misidentified reference to Unio crassus Say, 1817)

Lampsilis (sec. Eurynia) orbiculatus — Simpson (1900)
Lampsilis (Eurynia) orbiculata — Simpson (1914)
Lampsilis abrupta — R.I. Johnson (1980), Watters et al. (2009)

Unio cyclops Conrad, 1836

‘Raf.’ Conrad, 1836. Monogr. Fam. Unionidae 1(4): 35.
(error for Toxolasma cyclips Rafinesque, 1831)

Unio cyclips Ferussac, 1835

‘Rafinesque’ Ferussac, 1835. Mag. Zool. 5(59-60): 28.
(reference to Toxolasma cyclips Rafinesque, 1831)

Lampsilis (sec. Eurynia) orbiculatus — Simpson (1900)
Lampsilis (Eurynia) orbiculata — Simpson (1914)
Lampsilis abrupta — Parmalee & Bogan (1998), Watters et al. (2009)