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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.

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.
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Siphlonurus occidentalis (Gray Drake) Mayfly Nymph Pictures

This species emerges very late in the fall often along with Siphlonurus autumnalis just before ice forms on edges of streams.

This mayfly was collected from Crazy Beaver Spring in Montana on November 30th, 2006 and added to Troutnut.com by Bnewell on June 28th, 2011.


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Siphlonurus occidentalis (Gray Drake) Mayfly Nymph Pictures

Collection details
Location: Crazy Beaver Spring, Montana
Date: November 30th, 2006
Added to site: June 28th, 2011
Author: Bnewell
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