Unio cumberlandicus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 27 [as ‘cumberlandianus’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 25, pl. 7, fig. 19.
(renamed Margaron (Unio) cumberlandianus Lea, 1852)
Type(s): HOLOTYPE USNM_85254, Tenn.

Lampsilis (sec. Eurynia) nebulosus — Simpson (1900)
Lampsilis (Eurynia) nebulosa — Simpson (1914)
Eurynia nebulosus — Ortmann (1918)
Lampsilis (Ligumia) nebulosa — Frierson (1927)
Ligumia nebulosa — Haas (1969)
Villosa iris — Parmalee & Bogan (1998)
Cambarunio simus — Watters (2018)

Unio notatus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 28, pl. 8, fig. 22.
Type(s): HOLOTYPE (MONOTYPY) USNM_85075, Cumberland R., Tenn.

Lampsilis (sec. Eurynia) nebulosus — Simpson (1900)
Lampsilis (Eurynia) nebulosa — Simpson (1914)
Eurynia nebulosus — Ortmann (1918)
Micromya nebulosa — Ortmann (1924)
Lampsilis (Ligumia) nebulosa — Frierson (1927)
Ligumia nebulosa — Haas (1969)
Villosa nebulosa — Burch (1975)
Villosa iris — Parmalee & Bogan (1998), Williams et al. (2008)
Cambarunio simus — Watters (2018)

Unio simus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 29. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 26, pl. 8, fig. 20.
Type(s): HOLOTYPE USNM_85342, Cumberland R., Tenn.

Lampsilis (sec. Eurynia) simus — Simpson (1900)
Lampsilis (Eurynia) sima — Simpson (1914)
Eurynia nebulosus — Ortmann (1918)
Micromya nebulosa — Ortmann (1924)
Lampsilis (Ligumia) nebulosa — Frierson (1927)
Ligumia nebulosa — Haas (1969)
Villosa nebulosa — Burch (1975)
Villosa iris — Parmalee & Bogan (1998), Williams et al. (2008)
Villosa sima — Williams et al. (2017)
Cambarunio simus — Watters (2018), Burlakova et al. (2019), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023)

Margaron (Unio) cumberlandianus Lea, 1852
Lea, 1836. Synopsis Fam. Naiades: 27 [as ‘Margarita (Unio) cumberlandianus’]. [nomen nudum]
Lea, 1838. Synopsis Fam. Naiades: 20 [as ‘Margarita (Unio) cumberlandianus’]. [nomen nudum]
Lea, 1852. Synopsis Fam. Naiades: 30.
(new name for Unio cumberlandicus Lea, 1838)

Lampsilis (sec. Eurynia) nebulosus — Simpson (1900)
Lampsilis (Eurynia) nebulosa — Simpson (1914)
Eurynia nebulosus — Ortmann (1918)
Micromya nebulosa — Ortmann (1924)
Lampsilis (Ligumia) nebulosa — Frierson (1927)
Ligumia nebulosa — Haas (1969)
Villosa nebulosa — Burch (1975)
Villosa iris — Parmalee & Bogan (1998), Williams et al. (2008)

Villosa iris Campbell et al., 2005
‘Lea’ of Authors.
Campbell et al., 2005. Invert. Biol. 124(2): 155. [in part]
Zanatta & Murphy, 2006. MPE 41(1): 198. [in part]
(misidentified reference to Unio iris Lea, 1829)

Cambarunio simus — Burlakova et al. (2019)

Unio notatus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
(reference to Unio notatus Lea, 1838)

Lampsilis (sec. Eurynia) simus — Simpson (1900)
Lampsilis (Eurynia) sima — Simpson (1914)

Unio proximus Küster, 1861
‘Lea’ Küster, 1861. Conchyl. Cab. 9(2): 248, pl. 83, fig. 4.
(misidentified reference to Unio proximus Lea, 1852)

Lampsilis (sec. Eurynia) simus — Simpson (1900)
Lampsilis (Eurynia) sima — Simpson (1914)
Lampsilis (Ligumia) nebulosa — Frierson (1927)
Villosa iris — Parmalee & Bogan (1998)

Unio spatulatus Sowerby, 1868
‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 65, sp. 328.
(misidentified reference to Unio spatulatus Lea, 1845)

Lampsilis (sec. Eurynia) simus — Simpson (1900)
Lampsilis (Eurynia) sima — Simpson (1914)
Villosa iris — Parmalee & Bogan (1998)