Fusconaia subrotunda

Fusconaia subrotunda, the longsolid,^[2][3] long solid mussel or long solid naiad, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae.

Fusconaia subrotunda
Conservation status
Vulnerable  (IUCN 3.1)[1]
Threatened (ESA)[2][3]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Fusconaia
Species:	F. subrotunda
Binomial name
Fusconaia subrotunda (Lea, 1831)
Synonyms[4]
List Fusconaia subrotunda subsp. subrotunda (Lea, 1831) Fusconaia subrotunda subsp. pilaris (Lea, 1840) Fusconaia subrotunda subsp. kirtlandiana (Lea, 1834) Fusconaia subrotunda subsp. lesueuriana (Lea, 1840) Unio subrotundus Lea, 1831 Unio kirtlandianus Lea, 1834 Unio politus Conrad, 1837 Unio pilaris Lea, 1840 Unio lesueurianus Lea, 1840 Unio globatus Lea, 1871 Unio bursapastoris B.H. Wright, 1896 Quadrula flexuosa Simpson, 1900 Quadrula andrewsii Marsh, 1902 Quadrula beauchampii Marsh, 1902 Quadrula kirtlandiana subsp. minor Simpson, 1900 Fusconaja subrotunda subsp. leucogona Ortmann, 1913

This mussel, sometimes called a pigtoe, is found in river gravel. Young mussels are light brown, but darken to nearly black with age.

This species is found in Canada and the United States.

Subspecies

• Fusconaia subrotunda kirklandiana
• Fusconaia subrotunda lesueriana Lea
• Fusconaia subrotunda pilaris Lea
• Fusconaia subrotunda subrotunda