» Family Isonychiidae (Slate Drakes)
Common Name
This is page 2 of specimens of Isonychiidae. Visit the main Isonychiidae page for:
- The behavior and habitat of Isonychiidae.
Pictures of 20 Mayfly Specimens in the Family Isonychiidae:
Isonychia bicolor (Mahogany Dun) Mayfly Nymph
View 7 PicturesThis Isonychia bicolor nymph from the Catskills displays the prominent white stripe sometimes characteristic of its species. This is the first such specimen I've photographed, because members of the same species in the Upper Midwest have a more subdued stripe (and were once thought to be a different species, Isonychia sadleri). The striking coloration on this eastern nymph is more appealing.