Endangered and Threatened Species Factsheets - Mayflies

The content for these factsheets was originally presented in the Endangered and Threatened Invertebrates of Wisconsin, a free publication available by contacting the Endangered Resources Program. Also see a page of aquatic insect species references.

Letters in parentheses indicate date each species was listed.

Endangered

(H) Pecatonica River Mayfly Acanthametropus pecatonica

(H) Flat-headed Mayfly Anepeorus simplex

Threatened

At this time there are no mayfly species threatened with extinction.