species Elliptoideus sloatianus (Lea, 1840): synonymy

Unio atromarginatus Lea, 1840

Lea, 1840. Proc. Amer. Phil. Soc. 1: 288 [as ‘atro-marginatus’].
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 207 [45], pl. 13, fig. 21 [as ‘atro-marginatus’].

Unio (sec. Elliptio) sloatianus — Simpson (1900), Simpson (1914)
Elliptio (Elliptoideus) sloatianus — Frierson (1927), Haas (1969)
Elliptio sloatianus — Clench & Turner (1956)
Elliptoideus sloatianus — Burch (1975), Brim Box & Williams (2000), Williams et al. (2008), Williams et al. (2011), Williams et al. (2014)
Plectomerus dombeyana — Oesch (1984)
Plectomerus dombeyanus — Howells et al. (1996)

Unio sloatianus Lea, 1840

Lea, 1840. Proc. Amer. Phil. Soc. 1: 287.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 217 [55], pl. 16, fig. 33.
Type(s): LECTOTYPE AMNH_56104, Chattahoochee River, Georgia.

Unio (sec. Elliptio) sloatianus — Simpson (1900), Simpson (1914)
Elliptio (Elliptoideus) sloatianus — Frierson (1927), Haas (1969)
Elliptio sloatianus — Thiele (1934), Clench & Turner (1956)
Nephronaias (Elliptoideus) sloatiana — Haas (1969)
Elliptoideus sloatianus — Burch (1975), Davis (1984), Turgeon et al. (1988), Williams et al. (1993), Lydeard et al. (1996), ... Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025), Campbell & Lydeard (2026)
Plectomerus dombeyana — Oesch (1984)
Plectomerus dombeyanus — Howells et al. (1996)

Unio aratus Conrad, 1849

(homonym of Unio aratus Lea, 1843)
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 302.
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 154.

Unio (sec. Elliptio) sloatianus — Simpson (1900), Simpson (1914)
Elliptio (Elliptoideus) sloatianus — Frierson (1927), Haas (1969)
Elliptio sloatianus — Clench & Turner (1956)
Elliptoideus sloatianus — Burch (1975), Brim Box & Williams (2000), Williams et al. (2008), Williams et al. (2014)

Unio plectophorus Conrad, 1849

(correct name for Unio plectrophorus Conrad, 1849)
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 154 [as ‘plectrophorus’].
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 277, pl. 38, fig. 7.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 261 [as ‘Plectomerus plectophorus’].

Unio (sec. Elliptio) sloatianus — Simpson (1900), Simpson (1914)
Elliptio (Elliptoideus) sloatianus — Frierson (1927), Haas (1969)
Elliptio sloatianus — Clench & Turner (1956)
Elliptoideus sloatianus — Burch (1975), Brim Box & Williams (2000), Williams et al. (2008), Williams et al. (2011), Williams et al. (2014)

Unio plectrophorus Conrad, 1849

(incorrect original spelling of Unio plectophorus Conrad, 1849)
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 154.

Elliptio sloatianus — Clench & Turner (1956)
Elliptoideus sloatianus — Williams et al. (2008)

Margaron (Unio) plectoforus Lea, 1852

(error for Unio plectophorus Conrad, 1849; reference to Unio plectiforus Lea, 1852)
Lea, 1852. Synopsis Fam. Naiades: corrigenda et addenda.
Lea, 1870. Synopsis Fam. Naiades: 31.

Elliptio (Elliptoideus) sloatianus — Frierson (1927)

Unio plectiforus Lea, 1852

(error for Unio plectophorus Conrad, 1849)
‘Conrad’ Lea, 1852. Synopsis Fam. Naiades: 21.

Unio aloatinus Haas, 1969

(error for Unio sloatianus Lea, 1840)
‘Lea’ Haas, 1969. Das Tierreich 88: 213.