species Potamilus leptodon (Rafinesque, 1820): synonymy

Unio (Leptodea) leptodon Rafinesque, 1820

Rafinesque, 1818. Amer. Mon. Mag. 3: 355 [as ‘Potamilus leptodon’]. [nomen nudum]
Rafinesque, 1819. Jour. Phys. Chim. Hist. Nat. 88: 426 [as ‘U. (Plagiola) leptodon’]. [nomen nudum]
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 295, pl. 80, figs. 5-7 [also as ‘Elliptio leptodon’].
Rafinesque, 1864. [in] Binney & Tryon, reprint: 22, 29, 40.
NEOTYPE ANSP_20214, Kentucky River.

Lampsilis (Proptera) leptodon — Simpson (1900)
Lampsilis (Proptera) (Group of L. leptodon) leptodon — Simpson (1914)
Lampsilis leptodon — Vanatta (1915)
Lasmonos leptodon — Utterback (1916)
Paraptera leptodon — Ortmann (1918)
Leptodea leptodon — Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), F.C. Baker (1928), Haas (1969), ... Chen et al. (2020), Teiga-Teixeira et al. (2020), Graf & Cummings (2021), Wu et al. (2021), Chen et al. (2025)
Lampsilis (Leptodea) leptodon — Frierson (1927)
Potamilus leptodon — Smith et al. (2020), Smith & Johnson (2020), Zieritz et al. (2021), FMCS (2021), Wu et al. (2022), ... Wu et al. (2024), Dai et al. (2024), Dai et al. (2025), FMCS (2025), Campbell & Lydeard (2026)

Unio (Leptodea) leptodon var. olivacea Rafinesque, 1820

(intro'd as intra-sp. of Unio (Leptodea) leptodon Rafinesque, 1820)
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 295.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 41.

Unio (Leptodea) leptodon var. semiradiata Rafinesque, 1820

(intro'd as intra-sp. of Unio (Leptodea) leptodon Rafinesque, 1820)
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 295 [as ‘semi-radiata’].
Rafinesque, 1864. [in] Binney & Tryon, reprint: 41.

Anodon purpurascens Swainson, 1823

Swainson, 1823. Zool. Illustr. 3(1): pl. 160 [260?].
Swainson, 1840. Treat. Malacol.: 287; 381 [as ‘Hemiodon purpurscens’].

Lampsilis (Proptera) leptodon — Simpson (1900)
Lampsilis (Proptera) (Group of L. leptodon) leptodon — Simpson (1914)
Leptodea leptodon — Ortmann & Walker (1922), Haas (1969), Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Lampsilis (Leptodea) leptodon — Frierson (1927)

Symphynota tenuissima Lea, 1829

Lea, 1829. Trans. Amer. Phil. Soc. 3 [O. 1]: 453, pl. 11, fig. 21.
PARATYPE USNM_86052, Cincinnati, Ohio.

Lampsilis (Proptera) leptodon — Simpson (1900)
Unio (s.s.) tenuissimus — Call (1900)
Lampsilis (Proptera) (Group of L. leptodon) leptodon — Simpson (1914)
Unio (Symphynota) tenuissima — de Gregorio (1914)
Lasmonos leptodon — Utterback (1916)
Leptodea leptodon — Ortmann & Walker (1922), Ortmann (1924), F.C. Baker (1928), Haas (1969), Burch (1975), Oesch (1984), Strayer & Jirka (1997), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Lampsilis (Leptodea) leptodon — Frierson (1927)

Unio velum Say, 1829

Say, 1829. New Harm. Dissem. 2(19): 293.
Say, 1858. [in] Binney, Compl. Writings T. Say: 132.

Lampsilis (Proptera) leptodon — Simpson (1900)
Lampsilis (Proptera) (Group of L. leptodon) leptodon — Simpson (1914)
Leptodea leptodon — Ortmann & Walker (1922), F.C. Baker (1928), Burch (1975), Oesch (1984), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Lampsilis (Leptodea) velum — Frierson (1927)
Leptodea velum — Haas (1969)

Lampsilis blatchleyi Daniels, 1902

Daniels, 1902. Nautilus 16(2): 13, pl. 2.
HOLOTYPE UMMZ_82960, Wabash River, Grand Chain, Posey Co., Indiana.

Lampsilis (Proptera) (Group of L. leptodon) blatchleyi — Simpson (1914)
Lampsilis (Leptodea) velum — Frierson (1927)
Leptodea velum — Haas (1969)
Leptodea leptodon — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Anodon purpurescens Ferussac, 1835

(error for Anodon purpurascens Swainson, 1823)
‘Swainson’ Ferussac, 1835. Mag. Zool. 5(59-60): 25.

Unio leptodon Conrad, 1836

(reference to Unio (Leptodea) leptodon Rafinesque, 1820)
‘Rafinesque’ Conrad, 1836. Monogr. Fam. Unionidae 1(7): 58, pl. 33.

Lampsilis (Proptera) leptodon — Simpson (1900)
Leptodea leptodon — Watters et al. (2009)

Unio planus Conrad, 1836

(misidentified reference to Unio planus Barnes, 1823)
Conrad, 1836. Monogr. Fam. Unionidae 1(7): 59.