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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.

Female Leucrocuta hebe (Little Yellow Quill) Mayfly Dun Pictures

I found Catskill brown trout eagerly surface feeding to this species.

This mayfly was collected from the Beaverkill River in New York on August 22nd, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

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