Mayfly Genus Isonychia (Slate Drakes)
Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Isonychiidae (Slate Drakes)
» Genus Isonychia (Slate Drakes)
| Species in Isonychia |  |  |
| Isonychia bicolorMahogany Dun | 19 | 102 |
| Isonychia campestrisSlate Drake | 0 | 0 |
| Isonychia siccaSlate Drake | 0 | 0 |
| Isonychia velmaSlate Drake | 0 | 0 |
12 species aren't included.
Common Names
| Match | Common Name |
 | Slate Drakes |
 | Leadwings |
 | Great Western Leadwings |
| Leadwing Coachmen |
| Great Lead-Winged Coachmen |
This is page 3 of specimens of Isonychia. Visit the main Isonychia page for:
- The behavior and habitat of Isonychia.
- 5 streamside pictures of Isonychia.
20 Mayfly Specimens in the Genus Isonychia:
Isonychia bicolor (Mahogany Dun) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Feb 10, 2004
Added Jan 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly Dun
View 3 Pictures
View 3 PicturesRegion: Catskills
Collected Sep 2, 2004
Added Jan 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly Nymph
View 4 Pictures
View 4 PicturesRegion: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly Nymph
View 2 PicturesThese three Isonychia nymphs show the variety within the species from a single day at a single collection site.
View 2 PicturesThese three Isonychia nymphs show the variety within the species from a single day at a single collection site.Region: Upper Midwest
Collected Jan 14, 2004
Added Jan 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Jan 14, 2004
Added Jan 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Catskills
Collected Aug 24, 2004
Added Jan 25, 2006
Isonychia (Slate Drakes) Mayfly Nymph
View 3 PicturesThis smaller Isonychia nymph was caught with a bunch of bicolor specimens, but it does not have the fluffy spine structure at the base of its gills. This might mean it's Isonychia sayi, or it might just be a bicolor nymph too young to have developed those structures.
View 3 PicturesThis smaller Isonychia nymph was caught with a bunch of bicolor specimens, but it does not have the fluffy spine structure at the base of its gills. This might mean it's Isonychia sayi, or it might just be a bicolor nymph too young to have developed those structures.Region: Upper Midwest
Collected Jan 13, 2004
Added Jan 25, 2006
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