Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

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27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Name basis.....

Stenonema ithaca (Light Cahill) Mayfly Nymph

9 Pictures

Lateral view of a Stenonema ithaca (Heptageniidae) (Light Cahill) Mayfly Nymph from Paradise Creek in Pennsylvania

This specimen seems to be of the same species as a dun I photographed which emerged from another nymph in the same sample.

Collected May 28, 2007 from Paradise Creek in Pennsylvania

Added by Troutnut on June 4, 2007

Collected May 28, 2007 from Paradise Creek in Pennsylvania and added by Troutnut on June 4, 2007

Quillgordon
Schuylkill County, PA.

Posts: 109

Quillgordon on Jun 5, 2007June 5th, 2007, 6:40 am EDT

This is the same specimen that I collected from a stream nearby.
Can anyone tell me the history( name basis) for this insect ?
Is it common across the country?

Thanks....

Flyfishing is a state of mind! .............. Q.g.

C/R........barbless

Blue-winged OlivesBaetis

Troutnut Forum › Specimen Discussion › Name basis.....