Unioninae

Unioninae is a subfamily of freshwater mussels in the family Unionidae. This superfamily has a wide distribution, being found throughout Eurasia, North America (including Central America) and Africa.

Systematics
The following classification is based on MolluscaBase and the MUSSEL Project database:

The MUSSEL Project database and ITIS instead only divide the subfamily into five tribes, with Anodontini having three subtribes.
 * Tribe Anodontini Rafinesque, 1820
 * Genus Alasmidonta Say, 1818
 * Genus Anodonta Lamarck, 1799
 * Genus Anodontoides C. T. Simpson, 1898
 * Genus Arcidens C. T. Simpson, 1900
 * Genus †Cyclanodonta Starobogatov, 1970
 * Genus Lasmigona Rafinesque, 1831
 * Genus †Modelliella Starobogatov, 1970
 * Genus Pegias C. T. Simpson, 1900
 * Genus Pseudanodonta Bourguignat, 1877
 * Genus Pseudodontoideus Frierson, 1927
 * Genus Pyganodon Crosse & P. Fischer, 1894
 * Genus †Sichuanoconcha X.-Z. Liu, 1984
 * Genus Simpsonaias Frierson, 1914
 * Genus Simpsonella Cockerell, 1903
 * Genus Strophitus Rafinesque, 1820
 * Genus Utterbackia F. C. Baker, 1927
 * Genus Utterbackiana Frierson, 1927
 * Tribe Cristariini Lopes-Lima, Bogan & Froufe, 2017
 * Genus Amuranodonta Moskvicheva, 1973
 * Genus Anemina F. Haas, 1969
 * Genus Beringiana Starobogatov in Zatravkin, 1983
 * Genus Buldowskia Moskvicheva, 1973
 * Genus Cristaria Schumacher, 1817
 * Genus Pletholophus C. T. Simpson, 1900
 * Genus Sinanodonta Modell, 1945
 * Tribe Lanceolariini Froufe, Lopes-Lima & Bogan, 2017
 * Genus Lanceolaria Conrad, 1853
 * Tribe Lepidodesmini Huang & Wu in Huang et al. 2019
 * Genus Lepidodesma C. T. Simpson, 1896
 * Tribe Middendorffinaiini Lopes-Lima, Bolotov & Bogan, 2020
 * Genus Middendorffinaia Moskvicheva & Starobogatov, 1973
 * Tribe Nodulariini Starobogatov & Zatravkin, 1987
 * Genus Cuneopsis C. T. Simpson, 1900
 * Genus Inversiunio Habe, 1991
 * Genus Nodularia Conrad, 1853
 * Genus Pseudocuneopsis X. Huang, Y. Dai, Z. Chen & X. Wu, 2022
 * Genus Schistodesmus C. T. Simpson, 1900
 * Genus Tchangsinaia Starobogatov, 1970
 * Tribe Unionini Rafinesque, 1820
 * Genus Aculamprotula X.-P. Wu, Y.-L. Liang, H.-Z. Wang & S. Ouyang, 1999
 * Genus Acuticosta C. T. Simpson, 1900
 * Genus †Betekeia Starobogatov, 1970
 * Genus Diaurora Cockerell, 1903
 * Genus †Heterunio Lindholm, 1932
 * Genus †Modellinaia Starobogatov, 1970
 * Genus †Palindonaia Modell, 1950
 * Genus †Pristinunio Starobogatov, 1970
 * Genus Protunio P. Haas, 1913
 * Genus Pseudobaphia C. T. Simpson, 1900
 * Genus Rhombuniopsis F. Haas, 1920
 * Genus †Rumanunio Starobogatov, 1970
 * Genus †Sculptunio Lindholm, 1932
 * Genus †Sibirunio Starobogatov, 1970
 * Genus †Tuberunio Lindholm, 1932
 * Genus Unio Philipsson, 1788