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Unionidae

Margaritiferidae

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Data last updated
Mon 1 Dec 2025

Publication Clarke (1981): summary

publication summary

Full Citation

Clarke, A.H. 1981. The tribe Alasmidontini (Unionidae: Anodontinae), Part I. Pegias, Alasmidonta, and Arcidens. Smithsonian Contributions to Zoology (326). iii + 101 pp. Available electronically.

Attributed Nominal Genera

Attributed Nominal Species

Taxonomic Opinions

Alasmidonta (Alasmidens) mccordi Athearn, 1964 = Alasmidonta mccordi

Alasmidonta (Decurambis) atropurpurea (Rafinesque, 1831) = Alasmidonta atropurpurea

Alasmidonta (Decurambis) marginata Say, 1819 = Alasmidonta marginata
+ Unio rugulosus Wood, 1828
+ Decurambis scriptum Rafinesque, 1831
+ Margaritana marginata var. truncata B.H. Wright, 1898
+ Alasmidonta (Decurambis) marginata susquehannae Ortmann, 1919
+ Alasmidonta (Decurambis) marginata variabilis F.C. Baker, 1928

Alasmidonta (Decurambis) raveneliana (Lea, 1834) = Alasmidonta raveneliana
+ Unio swananoensis Hanley, 1843

Alasmidonta (Decurambis) robusta Clarke, 1981 = Alasmidonta robusta

Alasmidonta (Decurambis) varicosa (Lamarck, 1819) = Alasmidonta varicosa
+ Alasmodon corrugata De Kay, 1843

Alasmidonta (Pressodonta) heterodon (Lea, 1829) = Prolasmidonta heterodon

Alasmidonta (Pressodonta) viridis (Rafinesque, 1820) = Sulcularia viridis
+ Unio calceolus Lea, 1828
+ Alasmodonta truncata Conrad, 1834
+ Margaritana deltoidea Lea, 1838
+ Calceola angulata Swainson, 1840
+ Margaritana minor Lea, 1845
+ Alasmidonta (Pressodonta) calceolus danielsi F.C. Baker, 1928
+ Alasmidonta (Pressodonta) calceolus magnalacustris F.C. Baker, 1928

Alasmidonta (s.s.) arcula (Lea, 1838) = Alasmidonta arcula

Alasmidonta (s.s.) undulata (Say, 1817) = Alasmidonta undulata
+ Unio glabratus Sowerby & Sowerby, 1821
+ Unio hians Valenciennes, 1827
+ Alasmodonta sculptilis Say, 1829
+ Uniopsis radiata Swainson, 1840
+ Uniopsis mytiloides Swainson, 1840
+ Margaritana triangulata Lea, 1858
+ Unio swainsoni Sowerby, 1868

Alasmidonta (s.s.) undulata (Say, 1817) = Alasmidonta triangulata

Alasmidonta (s.s.) wrightiana (Walker, 1901) = Alasmidonta wrightiana

Arcidens (Arkansia) wheeleri (Ortmann & Walker, 1912) = Arcidens wheeleri

Arcidens (s.s.) confragosus (Say, 1829) = Arcidens confragosus
+ Arcidens confragosa jacintoensis Strecker, 1931

Pegias fabula (Lea, 1838)
+ Margaritana curreyiana Lea, 1840
+ Margaritana curreyana Lea, 1842