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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 Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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 Isonychia bicolor (Mahogany Dun) Mayfly Spinner Pictures

I collected this female together with a male.

Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Dorsal view of a Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Lateral view of a Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York
Ruler view of a Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York The smallest ruler marks are 1 mm.
Ventral view of a Female Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Spinner from the West Branch of Owego Creek in New York

This mayfly was collected from the West Branch of Owego Creek in New York on August 9th, 2006 and added to Troutnut.com by Troutnut on August 11th, 2006.


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Female Isonychia bicolor (Mahogany Dun) Mayfly Spinner Pictures

Collection details
Location: West Branch of Owego Creek, New York
Date: August 9th, 2006
Added to site: August 11th, 2006
Author: Troutnut
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