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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.

Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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.

Male Eurylophella (Chocolate Dun) Mayfly Spinner Pictures

Lateral view of a Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Dorsal view of a Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Ventral view of a Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin
Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the Teal River in Wisconsin

This mayfly was collected from the Teal River in Wisconsin on June 4th, 2005 and added to Troutnut.com by Troutnut on May 24th, 2006.


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Male Eurylophella (Chocolate Dun) Mayfly Spinner Pictures

Collection details
Location: Teal River, Wisconsin
Date: June 4th, 2005
Added to site: May 24th, 2006
Author: Troutnut
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