» Species bicolor (Mahogany Dun)
This is page 2 of specimens of Isonychia bicolor. Visit the main Isonychia bicolor page for:
- The behavior and habitat of Isonychia bicolor.
Pictures of 19 Mayfly Specimens in the Species Isonychia bicolor:
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.