species Toxolasma parvum (Barnes, 1823): synonymy

Unio parvus Barnes, 1823

Barnes, 1823. Amer. J. Sci. 6 (1-2): 274 [‘174’], pl. 13, fig. 18.
Type(s): TYPE LOST XXX_UNKNOWN, Fox River, Wisconsin.

Lampsilis (Carunculina) parvus — Simpson (1900)
Unio (s.s.) parvus — Call (1900)
Lampsilis parva — Ortmann (1909)
Lampsilis (Carunculina) parva — Ortmann (1909), Simpson (1914)
Carunculina parva — Ortmann (1910), Utterback (1916), Ortmann (1925), Frierson (1927), F.C. Baker (1928), ... Gordon et al. (1979), Mathiak (1979), R.I. Johnson (1980), Mackie et al. (1980), Davis & Fuller (1981)
Eurynia (Carunculina) parvus — Ortmann (1912)
Carunculina parvus — Ortmann (1915)
Carunculina parva parva — Haas (1969)
Toxolasma parvus — Oesch (1984), Turgeon et al. (1988), Cummings & Mayer (1992), Williams et al. (1993), Vidrine (1993), ... Marshall et al. (2018), Cha et al. (2018), Chen et al. (2020), Gasparini et al. (2020), Stewart et al. (2021)
Toxolasma parvum — Hoeh et al. (1995), Strayer & Jirka (1997), Lee (2006), Williams et al. (2008), Watters et al. (2009), ... Dai et al. (2025), Chen et al. (2025), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Toxolasma parva — Haag (2012)

Unio pertennis de Gregorio, 1914

de Gregorio, 1914. Il Nat. Siciliano 2: 61, pl. 6, figs. 4a-d.

Unio pertennis — de Gregorio (1914)
Toxolasma parvum — Watters et al. (2009), MolluscaBase (2024), Cummings et al. (2025)

Carunculina parva cahni F.C. Baker, 1927

(intro'd as intra-sp. of Unio parvus Barnes, 1823)
F.C. Baker, 1927. Amer. Midl. Nat. 10(7): 222.
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 253, pl. 105, figs. 14-18.
Type(s): HOLOTYPE (ORIG. DESIG.) INHS_82281, Neosha Mill Pond, Dodge Co., Wisconsin.

Carunculina parvus cahni — F.C. Baker (1927)
Carunculina parva cahni — F.C. Baker (1928)
Carunculina parva parva — Haas (1969)
Carunculina parva — R.I. Johnson (1972), Burch (1975), R.I. Johnson (1980)
Toxolasma parvus — Parmalee & Bogan (1998)
Toxolasma parvum — Williams et al. (2008), Watters et al. (2009), MolluscaBase (2024), Cummings et al. (2025)

Toxolasma parvum Garner et al., 2004

(reference to Unio parvus Barnes, 1823)
‘Barnes’ Garner et al., 2004. Alabama Wildlife: ??. [in part]

Toxolasma sp. — Williams et al. (2008)

Unio pertenuis Watters et al., 2009

(error for Unio pertennis de Gregorio, 1914)
‘de Gregorio’ Watters et al., 2009. Freshw. Mussels OH: 302.