Acanthametropus pecatonica

Acanthametropus pecatonica, the Pecatonica River mayfly, is a species of mayfly in the family Acanthametropodidae. It is endemic to the Pecatonica River of Wisconsin and Illinois, with populations observed in South Carolina and Georgia.^[2][3][4]

Acanthametropus pecatonica
Conservation status
Extinct  (IUCN 2.3)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Ephemeroptera
Family:	Acanthametropodidae
Genus:	Acanthametropus
Species:	†A. pecatonica
Binomial name
†Acanthametropus pecatonica Burks, 1953

Acanthametropus pecatonica was considered extinct after 1927, but was rediscovered in 1987, about 60 years after it was considered lost.^[5] It has been found in at least five counties of Wisconsin,^[6] and historically at locations in Illinois, South Carolina, and Georgia.^[3][7]