Header image
Enter a name
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.

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.

Female Eurylophella temporalis (Chocolate Dun) Mayfly Dun Pictures

I found this specimen along with a male on the surface in the shallows of a long flat in a warm-water smallmouth bass stream, during the middle of the afternoon. This same individual is listed as a separate specimen after molting into a spinner.

Lateral view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin
Artistic view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin
Dorsal view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin
Ventral view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin
Ruler view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin The smallest ruler marks are 1 mm.

This mayfly was collected from the West Fork of the Chippewa River in Wisconsin on June 21st, 2021 and added to Troutnut.com by Troutnut on June 24th, 2021.


Start a Discussion of Dun

Female Eurylophella temporalis (Chocolate Dun) Mayfly Dun Pictures

Collection details
Location: West Fork of the Chippewa River, Wisconsin
Date: June 21st, 2021
Added to site: June 24th, 2021
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy