''Sagittunio nasutus'', the eastern pondmussel, is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of freshwater mussel in the family Unionidae, the river mussels.MolluscaBase eds. (2021). MolluscaBase. Sagittunio nasutus (Say, 1817). Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=1056434 on 2021-05-08 This species is native to the eastern United States and

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...

, Canada. Only two populations are known from Canada. Like many Unionoid mussels, female eastern pondmussels display a lure to attract their fish hosts (see video, right).

References

* Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 1-20 pl. -4 page(s): npaginated pl. 4 fig. 1 * Watters, G.T. (2018). A preliminary review of the nominal genus Villosa of freshwater mussels (Bivalvia, Unionidae) in North America. Visaya. Suppl. 10: 3-139. nasutus Molluscs of the United States Molluscs of Canada Articles containing video clips Bivalves described in 1817 Taxobox binomials not recognized by IUCN Taxa named by Thomas Say {{Unionidae-stub