Unio trabalis Conrad, 1834
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) 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)

Unio perpurpureus Lea, 1861
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) 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)

Unio glans Conrad, 1836
‘Lea’ Conrad, 1836. Monogr. Fam. Unionidae 1(2): 21, pl. 9, fig. 2.
(misidentified reference to Unio glans Lea, 1831)

Lampsilis (Carunculina) glans — Simpson (1900), Simpson (1914)
Lampsilis (Venusta) trabalis — Frierson (1927)

Unio maestus Küster, 1861
‘Lea’ Küster, 1861. Conchyl. Cab. 9(2): 226, pl. 76, fig. 5.
(misidentified reference to Unio moestus Lea, 1841; error for Unio moestus Lea, 1841)

Lampsilis (Carunculina) mœstus — Simpson (1900)
Lampsilis (Venusta) trabalis — Frierson (1927)

Unio vanuxemensis Sowerby, 1866
‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 39, sp. 216.
(misidentified reference to Unio vanuxemensis Lea, 1838)

Lampsilis (sec. Eurynia) trabalis — Simpson (1900)
Lampsilis (Eurynia) trabalis — Simpson (1914)
Lampsilis (Venusta) trabalis — Frierson (1927)
Villosa trabalis — Parmalee & Bogan (1998)

Unio troostensis Sowerby, 1868
‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 79, sp. 415.
(misidentified reference to Unio troostensis Lea, 1834)

Lampsilis (sec. Eurynia) perpurpureus — Simpson (1900)
Lampsilis (Eurynia) perpurpurea — Simpson (1914)
Villosa perpurpurea — Parmalee & Bogan (1998)