Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

Mayfly Genus Isonychia (Slate Drakes)

Taxonomic Navigation -?-
» Genus Isonychia (Slate Drakes)
Species in IsonychiaNumber of SpecimensNumber of Pictures
Isonychia bicolorMahogany Dun00
Isonychia campestrisSlate Drake00
Isonychia siccaSlate Drake00
Isonychia velmaSlate Drake00

12 species aren't included.
Common Names
MatchCommon Name
***Slate Drakes
**Leadwings
*Great Western Leadwings
*Leadwing Coachmen
*Great Lead-Winged Coachmen


Pictures Below ↓

This is page 3 of specimens of Isonychia. Visit the main Isonychia page for:

  • The behavior and habitat of Isonychia.

Pictures of 20 Mayfly Specimens in the Genus Isonychia:

Specimen Page:123
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 2 Pictures
Collected February 10, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Isonychia bicolor (Mahogany Dun) Mayfly NymphFemale Isonychia bicolor (Mahogany Dun) Mayfly Nymph View 2 Pictures
Collected August 24, 2004 from the Beaverkill River in New York
Added to Troutnut.com by Troutnut on January 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 2 Pictures
Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 3 Pictures
Collected April 1, 2007 from Mystery Creek #62 in New York
Added to Troutnut.com by Troutnut on April 3, 2007
Female Isonychia bicolor (Mahogany Dun) Mayfly DunFemale Isonychia bicolor (Mahogany Dun) Mayfly Dun View 6 PicturesThis is a naturally crippled female Isonychia bicolor dun. One of her main wings came out as a deformed, crumpled yellow object. I found her flopped over on her side struggling on the surface of a small stream.
Collected August 22, 2006 from the West Branch of Owego Creek in New York
Added to Troutnut.com by Troutnut on August 23, 2006
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 3 Pictures
Collected May 18, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Isonychia bicolor (Mahogany Dun) Mayfly DunFemale Isonychia bicolor (Mahogany Dun) Mayfly Dun View 3 Pictures
Collected September 2, 2004 from the Beaverkill River in New York
Added to Troutnut.com by Troutnut on January 25, 2006
Specimen Page:123
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
Top Gift Shop Designs
I outfish my daddy!Electric blue Hendrickson dun.I love buggers. Big, green, wooly ones.I outfish my husband!Be the trout.
Eat mayflies.
Top Insect Specimens
Baetisca obesa Mayfly NymphCorydalus Hellgrammite LarvaRhyacophila fuscula Caddisfly LarvaPteronarcys biloba Stonefly NymphHydropsyche aenigma Caddisfly Adult
Miscellaneous Sites
Dalton Highway (Haul Road) Corridor Map