Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Venustaconcha

Conrad, 1834. New Fresh-Water Shells: 27, pl. 3, fig. 5.
Conrad, 1840. Monogr. Fam. Unionidae 2(12): 110, pl. 60, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 259.
Type(s): HOLOTYPE ANSP_56481, Flint River, Ala.
Lampsilis (sec. Eurynia) trabalis — Simpson (1900)
Eurynia (Micromya) trabalis — Ortmann (1912), Ortmann (1918)
Lampsilis (Eurynia) (Group of L. trabalis) trabalis — Simpson (1914)
Micromya trabalis — Ortmann (1924), Ortmann (1925)
Lampsilis (Venusta) trabalis — Frierson (1927)
Lampsilis (Venustaconcha) trabalis — Haas (1969)
Villosa trabalis — Stansbery (1970), Burch (1975), R.I. Johnson (1980), Turgeon et al. (1988), Williams et al. (1993), ... ITIS (2012), Haag (2012), Jones (2015), Lane et al. (2016), Klymus et al. (2020)
Venustaconcha trabalis — Williams et al. (2017), Watters (2018), Lane et al. (2019), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025), Campbell & Lydeard (2026)

Lea, 1861. Proc. Acad. Nat. Sci. 13: 41.
Lea, 1866. Jour. Acad. Nat. Sci. 6 [O. 11]: 46 [50], pl. 16, fig. 44.
Type(s): HOLOTYPE USNM_85246, Tenn.
Lampsilis (sec. Eurynia) perpurpureus — Simpson (1900)
Lampsilis (Eurynia) (Group of L. trabalis) perpurpurea — Simpson (1914)
Eurynia (Micromya) perpurpurea — Ortmann (1915), Ortmann (1918)
Micromya perpurpurea — Ortmann (1924), Ortmann (1925)
Lampsilis (Venusta) trabalis — Frierson (1927)
Lampsilis (Venustaconcha) trabalis — Haas (1969)
Villosa trabalis — Stansbery (1970), Burch (1975), R.I. Johnson (1980)
Villosa perpurpurea — Turgeon et al. (1988), Williams et al. (1993), Parmalee & Bogan (1998), Turgeon et al. (1998), IUCN (2000), Graf & Cummings (2007), Bogan (2010), Cummings & Graf (2010), ITIS (2012), Haag (2012), Lane et al. (2016), Klymus et al. (2020)
Venustaconcha trabalis — Williams et al. (2017), Watters (2018), Graf & Cummings (2021)
(misidentified reference to Unio glans Lea, 1831)
‘Lea’ Conrad, 1836. Monogr. Fam. Unionidae 1(2): 21, pl. 9, fig. 2.
Lampsilis (Carunculina) glans — Simpson (1900), Simpson (1914)
Lampsilis (Venusta) trabalis — Frierson (1927)
(misidentified reference to Unio moestus Lea, 1841; error for Unio moestus Lea, 1841)
‘Lea’ Küster, 1861. Conchyl. Cab. 9(2): 226, pl. 76, fig. 5.
Lampsilis (Carunculina) mœstus — Simpson (1900)
Lampsilis (Venusta) trabalis — Frierson (1927)
(misidentified reference to Unio vanuxemensis Lea, 1838)
‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 39, sp. 216.
Lampsilis (sec. Eurynia) trabalis — Simpson (1900)
Lampsilis (Eurynia) (Group of L. trabalis) trabalis — Simpson (1914)
Lampsilis (Venusta) trabalis — Frierson (1927)
Villosa trabalis — Parmalee & Bogan (1998)
(misidentified reference to Unio troostensis Lea, 1834)
‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 79, sp. 415.
Lampsilis (sec. Eurynia) perpurpureus — Simpson (1900)
Lampsilis (Eurynia) (Group of L. trabalis) perpurpurea — Simpson (1914)
Villosa perpurpurea — Parmalee & Bogan (1998)
Lampsilis (sec. Eurynia) trabalis — Simpson (1900)
Lampsilis (Carunculina) glans — Simpson (1900), Simpson (1914)
Lampsilis (Carunculina) mœstus — Simpson (1900)
Lampsilis (sec. Eurynia) perpurpureus — Simpson (1900)
Eurynia (Micromya) trabalis — Ortmann (1912), Ortmann (1918)
Lampsilis (Eurynia) (Group of L. trabalis) trabalis — Simpson (1914)
Lampsilis (Eurynia) (Group of L. trabalis) perpurpurea — Simpson (1914)
Eurynia (Micromya) perpurpurea — Ortmann (1915), Ortmann (1918)
Micromya trabalis — Ortmann (1924), Ortmann (1925)
Micromya perpurpurea — Ortmann (1924), Ortmann (1925)
Lampsilis (Venusta) trabalis — Frierson (1927)
Lampsilis (Venustaconcha) trabalis — Haas (1969)
Villosa trabalis — Stansbery (1970), Burch (1975), R.I. Johnson (1980), Turgeon et al. (1988), Williams et al. (1993), ... ITIS (2012), Haag (2012), Jones (2015), Lane et al. (2016), Klymus et al. (2020)
Villosa perpurpurea — Turgeon et al. (1988), Williams et al. (1993), Parmalee & Bogan (1998), Turgeon et al. (1998), IUCN (2000), Graf & Cummings (2007), Bogan (2010), Cummings & Graf (2010), ITIS (2012), Haag (2012), Lane et al. (2016), Klymus et al. (2020)
Venustaconcha trabalis — Williams et al. (2017), Watters (2018), Lane et al. (2019), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025), Campbell & Lydeard (2026)