Ambleminae is a subfamily of freshwater mussel in the family Unionidae. They are found throughout much of eastern North America south to Central America, although fossils are also known from Siberia. Some species have also been introduced to East Asia. They are the most speciose radiation of the Unionidae, with more than 300 species.

Fossils of this group date back to the Late Cretaceous.

Systematics

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

  • Tribe Amblemini Rafinesque, 1820 Genus Amblema Rafinesque, 1820 Genus Plectomerus Conrad, 1853 Genus Reginaia D. C. Campbell & Lydeard, 2012
  • Tribe Lampsilini Ihering, 1901 Genus Actinonaias Crosse & P. Fischer, 1894 Genus Arotonaias E. von Martens, 1900 Genus Atlanticoncha C. H. Smith, J. M. Pfeiffer & N. A. Johnson, 2020 Genus Cambarunio Watters, 2018 Genus Cyprogenia Agassiz, 1852 Genus Cyrtonaias Crosse & P. Fischer, 1894 Genus Delphinonaias Crosse & P. Fischer, 1894 Genus Disconaias Crosse & P. Fischer, 1894 Genus Dromus C. T. Simpson, 1900 Genus Ellipsaria Rafinesque, 1820 Genus Epioblasma Rafinesque, 1831 Genus Friersonia Ortmann, 1912 Genus Glebula Conrad, 1853 Genus Hamiota Roe & Hartfield, 2005 Genus Lampsilis Rafinesque, 1820 Genus Leaunio Watters, 2018 Genus Lemiox Rafinesque, 1831 Genus †Lenelliptio C. M. Kolesnikov, 1980 (Late Cretaceous of Siberia) Genus Ligumia Swainson, 1840 Genus Medionidus C. T. Simpson, 1900 Genus Obliquaria Rafinesque, 1820 Genus Obovaria Rafinesque, 1819 Genus Ortmanniana Frierson, 1927 Genus Pachynaias Crosse & P. Fischer, 1894 Genus Paetulunio Watters, 2018 Genus Potamilus Rafinesque, 1818 Genus Ptychobranchus C. T. Simpson, 1900 Genus Sagittunio Watters, 2018 Genus Toxolasma Rafinesque, 1831 Genus Truncilla Rafinesque, 1819 Genus Venustaconcha Frierson, 1927 Genus Villosa Frierson, 1927
  • Tribe Pleurobemini Hannibal, 1912 Genus Elliptio Rafinesque, 1819 Genus Elliptoideus Frierson, 1927 Genus Eurynia Rafinesque, 1819 Genus Fusconaia C. T. Simpson, 1900 Genus Hemistena Rafinesque, 1820 Genus Parvaspina Perkins, N. A. Johnson & Gangloff, 2017 Genus Plethobasus C. T. Simpson, 1900 Genus Pleurobema Rafinesque, 1819 Genus Pleuronaia Frierson, 1927
  • Tribe Popenaiadini Heard & Guckert, 1970 Genus Barynaias Crosse & P. Fischer, 1894 Genus Martensnaias Frierson, 1927 Genus Micronaias C. T. Simpson, 1900 Genus Nephritica Frierson, 1927 Genus Nephronaias Crosse & P. Fischer, 1894 Genus Popenaias Frierson, 1927 Genus Psoronaias Crosse & P. Fischer, 1894 Genus Psorula F. Haas, 1930 Genus Reticulatus Frierson, 1927 Genus Sphenonaias Crosse & P. Fischer, 1894
  • Tribe Quadrulini Ihering, 1901 Genus Cyclonaias Pilsbry, 1922 Genus †Eonaias W. B. Marshall, 1929 (Pliocene of Texas) Genus Megalonaias Utterback, 1915 Genus †Proparreysia Pilsbry, 1921 (Late Cretaceous of Colorado) Genus †Protamblema Modell, 1957 (Late Cretaceous of Wyoming) Genus Quadrula Rafinesque, 1820 Genus Theliderma Swainson, 1840 Genus Tritogonia Agassiz, 1852 Genus Uniomerus Conrad, 1853