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Unio (Eurynia) teres Rafinesque, 1820

Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 321 [also as ‘Elliptio teres’].
Rafinesque, 1864. [in] Binney & Tryon, reprint: 63.
Type(s): NEOTYPE INHS_89410 (by Keogh & Simons, 2019: 188), Wabash River, 3.4 km SSE of Calvin, IL.

Unio (s.s.) teres — Call (1900)
Lampsilis anodontoides — Utterback (1916), Ortmann & Walker (1922), Mathiak (1979)
Lampsilis teres — Ortmann (1918), Morrison (1969), Burch (1975), R.I. Johnson (1980), Davis & Fuller (1981), ... Czaja et al. (2023), Hopper et al. (2023), Hauck et al. (2023), FMCS (2025), Cummings et al. (2025)
Lampsilis (Ligumia) teres — Frierson (1927), Haas (1930)
Ligumia teres teres — Haas (1969)
Lampsilis (s.s.) teres — R.I. Johnson (1972)
Lampsilis teres teres — Oesch (1984)

Unio anodontoides Lea, 1831

Lea, 1831. Trans. Amer. Phil. Soc. 4 [O. 1]: 81 [91], pl. 8, fig. 11.
Type(s): TYPE LOST XXX_UNKNOWN, Mississippi river,... Alabama river, … Ohio river.

Lampsilis (sec. Eurynia) anodontoides — Simpson (1900)
Unio (s.s.) teres — Call (1900)
Lampsilis anodontoides — Ortmann (1912), Utterback (1916), Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), F.C. Baker (1928), Gordon et al. (1979), Mathiak (1979)
Lampsilis (Eurynia) anodontoides — Simpson (1914)
Unio anodontoides — de Gregorio (1914), Henderson (1935)
Lampsilis (Ligumia) teres — Frierson (1927)
Lampsilis anodontoides anodontoides — Murray & Leonard (1962)
Ligumia teres teres — Haas (1969)
Lampsilis (Simpsonunio) anodontoides — Starobogatov (1970)
Lampsilis (s.s.) teres — R.I. Johnson (1972)
Lampsilis teres — Burch (1975), R.I. Johnson (1980), Vidrine (1993), Howells et al. (1996), Strayer & Jirka (1997), ... Williams et al. (2008), Watters et al. (2009), IUCN (2012), Keogh & Simons (2019), Cummings et al. (2025)
Lampsilis teres anodontoides — Oesch (1984)

Unio teres ‘Rafinesque’ of Authors

‘Rafinesque’ of Authors.
Say, 1834. Amer. Conch. 6: ??.
Conrad, 1836. Monogr. Fam. Unionidae 1(6): 52, pl. 28.
(reference to Unio (Eurynia) teres Rafinesque, 1820)

Lampsilis (sec. Eurynia) anodontoides — Simpson (1900)
Lampsilis (Eurynia) anodontoides — Simpson (1914)
Lampsilis anodontoides — Utterback (1916), Ortmann & Walker (1922)

Unio anodontoides Reeve, 1865

‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 21, fig. 97.
(reference to Unio anodontoides Lea, 1831)

Lampsilis (sec. Eurynia) fallaciosus — Simpson (1900)
Lampsilis (Eurynia) fallaciosus — Simpson (1914)

Unio preanodontoides Whitfield, 1885

Whitfield, 1885. U.S. Geol. Surv. Mon. 9: 250, pl. 31, fig. 2.

Unio anodontoides — Henderson (1935)

Lampsilis anodontoides F.C. Baker, 1898

F.C. Baker, 1898. Bull. Chicago Acad. Sci. 3(1): pl. 10, fig. 3. [in part]
(reference to Unio anodontoides Lea, 1831)

Lampsilis (sec. Eurynia) fallaciosus — Simpson (1900)
Lampsilis (Eurynia) fallaciosus — Simpson (1914)

Lampsilis anodontoides F.C. Baker, 1898

F.C. Baker, 1898. Bull. Chicago Acad. Sci. 3(1): pl. 10, figs. 1-2. [in part]
(reference to Unio anodontoides Lea, 1831)

Lampsilis (sec. Eurynia) anodontoides — Simpson (1900)
Lampsilis (Eurynia) anodontoides — Simpson (1914)
Lampsilis teres — Watters et al. (2009)

Lampsilis fallaciosus Smith, 1899

Smith, 1899. Bull. U.S. Fish. Comm. 18: 291, pl. 78 (bottom).
‘Smith’ Simpson, 1900. Proc. Acad. Nat. Sci. 52: 74, pl. 2, fig. 5.
Type(s): HOLOTYPE USNM_30023A, Ohio R., Sedamsville, Ohio.

Lampsilis (sec. Eurynia) fallaciosus — Simpson (1900)
Lampsilis fallaciosus — Simpson (1900), Utterback (1916)
Lampsilis anodontoides — Ortmann (1912), Mathiak (1979)
Lampsilis (Eurynia) fallaciosus — Simpson (1914)
Lampsilis anodontoides fallaciosa — Ortmann (1925), Murray & Leonard (1962)
Lampsilis (Ligumia) teres-fallaciosa — Frierson (1927)
Lampsilis fallaciosa — F.C. Baker (1928)
Ligumia teres teres — Haas (1969)
Lampsilis teres — Morrison (1969), Burch (1975), R.I. Johnson (1980), Vidrine (1993), Howells et al. (1996), Parmalee & Bogan (1998), Brim Box & Williams (2000), Williams et al. (2008), Watters et al. (2009), IUCN (2012), Keogh & Simons (2019), Cummings et al. (2025)
Lampsilis (s.s.) teres — R.I. Johnson (1972)
Lampsilis teres teres — Oesch (1984)
Lampsilis teres fallaciosa — R.I. Johnson (1999)

Unio anadontoides Küster, 1853

‘Lea’ Küster, 1853. Conchyl. Cab. 9(2): 68.
(error for Unio anodontoides Lea, 1831)

Unio oriens Sowerby, 1868

‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 63, sp. 314.
(misidentified reference to Unio oriens Lea, 1831)

Lampsilis (sec. Eurynia) fallaciosus — Simpson (1900)
Lampsilis (Eurynia) fallaciosus — Simpson (1914)
Lampsilis teres — Parmalee & Bogan (1998), Watters et al. (2009)

Unio oblitus Haas, 1930

‘Say’ Haas, 1930. Senckenbergiana 12(6): 328. [MS]
(intro'd as syn of Unio (Eurynia) teres Rafinesque, 1820)

Lampsilis (Ligumia) teres — Haas (1930)