Unioninae is a

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

of freshwater mussels in the family

Unionidae The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. The range of distribution for this family is world-wide. It is at its most diverse ...

. This superfamily has a wide distribution, being found throughout

Eurasia Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelago a ...

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

(including

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

) and

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

Systematics

The following classification is based on MolluscaBase and the MUSSEL Project database: * Tribe Anodontini Rafinesque, 1820 ** Genus ''

Alasmidonta ''Alasmidonta'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. Species within the genus ''Alasmodonta'' * Altamaha arcmussel, '' Alasmidonta arcula'' (I. Lea, 1838) * Cumberland elktoe, ...

'' Say, 1818 ** Genus ''

Anodonta ''Anodonta'' is a genus of freshwater mussels in the family Unionidae, the river mussels. Species Species in this genus include: * ''Anodonta anatina'' Linné, 1758 – duck mussel * '' Anodonta beringiana'' Middendorff, 1851 – Yukon f ...

'' Lamarck, 1799 ** Genus '' Anodontoides'' C. T. Simpson, 1898 ** Genus ''

Arcidens ''Arcidens'' is a genus of freshwater mussels, aquatic bivalve molluscs in the family Unionidae The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or sim ...

'' C. T. Simpson, 1900 ** Genus †'' Cyclanodonta'' Starobogatov, 1970 ** Genus ''

Lasmigona ''Lasmigona'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or s ...

'' Rafinesque, 1831 ** Genus '' Lepidodesma'' C. T. Simpson, 1896 ** Genus †'' Modelliella'' Starobogatov, 1970 ** Genus ''

Pegias ''Pegias'' is a monotypic genusUSFWS''Pegias fabula'' Recovery Plan.September 1989. of freshwater mussels in the family Unionidae. This genus contains the single species ''Pegias fabula'', known commonly as the littlewing pearlymussel. Distribut ...

'' C. T. Simpson, 1900 ** Genus ''

Pseudanodonta ''Pseudanodonta'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. MolluscaBase eds. (2021). MolluscaBase. Pseudanodonta Bourguignat, 1877. Accessed through: World Register of Marine Speci ...

'' Bourguignat, 1877 ** Genus '' Pseudodontoideus'' Frierson, 1927 ** Genus ''

Pyganodon ''Pyganodon'' is a genus of freshwater mussels, aquatic bivalve mollusks in the subfamily Unioninae of the family Unionidae, the river mussels.MolluscaBase eds. (2022). MolluscaBase. Pyganodon Crosse & P. Fischer, 1894. Accessed through: World ...

'' Crosse & P. Fischer, 1894 ** Genus †'' Sichuanoconcha'' X.-Z. Liu, 1984 ** Genus ''

Simpsonaias ''Simpsonaias ambigua'', the salamander mussel or mudpuppy mussel, is a species of bivalve in the family Unionidae. It is unique among freshwater mussels in using mudpuppies as its glochidial host. It is the only freshwater mussel known to have a ...

'' Frierson, 1914 ** Genus '' Simpsonella'' Cockerell, 1903 ** Genus '' Strophitus'' Rafinesque, 1820 ** Genus ''

Utterbackia ''Utterbackia'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or ...

'' 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 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 The MUSSEL Project database and ITIS instead only divide the subfamily into three tribes.

References

{{Taxonbar, from=Q33139707 Unionidae Protostome subfamilies Taxa named by Constantine Samuel Rafinesque