species Alasmidonta undulata (Say, 1817): synonymy

Unio undulata Say, 1817

Say, 1817. Nich. Encyc. 2: [13,] pl. 3, fig. 3.
Say, 1819. Nich. Encyc. 4: [19,] pl. 3, fig. 3.
Say, 1858. [in] Binney, Compl. Writings T. Say: 53.

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), Frierson (1927), Haas (1969), Haas (1969), R.I. Johnson (1970), Burch (1975), Clarke (1981), Graf & Cummings (2007), Williams et al. (2014)
Alasmidonta undulata — Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912), Modell (1942), ... FMCS (2021), Whelan et al. (2023), Hopper et al. (2023), Perkins et al. (2025), FMCS (2025)
Alasmodonta undulata — Thiele (1934)

Unio glabratus G.B. Sowerby, 1821

‘Lamarck’ G.B. Sowerby, 1821. Genera of Shells 2: pl. 86, fig. 3.
(misidentified reference to Unio glabrata Lamarck, 1819)

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), R.I. Johnson (1970), Burch (1975), Clarke (1981)

Unio hians Valenciennes, 1827

Valenciennes, 1827. Receuil Observ. Zool. 2(11-12): 235, pl. 54, figs. 2a-b.

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), Frierson (1927), Haas (1969), R.I. Johnson (1970), Burch (1975), Clarke (1981)

Alasmodonta sculptilis Say, 1829

Say, 1829. New Harm. Dissem. 2(22): 339, sp. 1.
Say, 1858. [in] Binney, Compl. Writings T. Say: 137.

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), Frierson (1927), Haas (1969), R.I. Johnson (1970), Burch (1975), Clarke (1981)

Uniopsis mytiloides Swainson, 1840

‘Lea’ Swainson, 1840. Treat. Malacol.: 289 [as ‘Uniopsis radiata’].
Swainson, 1840. Treat. Malacol.: 382, fig. 62 [as ‘mytiloïdes’].
(renamed Unio swainsoni Sowerby, 1868)

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), Haas (1969), R.I. Johnson (1970), Burch (1975), Clarke (1981)
Alasmidonta (s.s.) undulata-mytiloides — Frierson (1927)

Unio swainsoni Sowerby, 1868

‘Hanley’ Sowerby, 1868. Conch. Icon. 16: pl. 76, sp. 396.
(new name for Uniopsis radiata Swainson, 1840; new name for Uniopsis mytiloides Swainson, 1840)
Type(s): HOLOTYPE BMNH_1900-3-19-21, Hab._?

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), Haas (1969), R.I. Johnson (1970), Burch (1975), Clarke (1981)
Alasmidonta (s.s.) undulata-mytiloides — Frierson (1927)

Alasmodon inflata Swainson, 1840

Swainson, 1840. Treat. Malacol.: 289, footnote.
(intro'd as syn of Uniopsis mytiloides Swainson, 1840)

Uniopsis radiata Swainson, 1840

‘Lea’ Swainson, 1840. Treat. Malacol.: 289, fig. 62.
(renamed Unio swainsoni Sowerby, 1868; misidentified reference to Alasmodonta radiata Conrad, 1834)

Alasmidonta (s.s.) undulata — Simpson (1900), Simpson (1914), Haas (1969), R.I. Johnson (1970), Burch (1975), Clarke (1981)
Alasmidonta (s.s.) undulata-mytiloides — Frierson (1927)