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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.

Epeorus longimanus (Slate Brown Dun) Mayfly Nymph Pictures

This mayfly was collected from the Vermillion River in Montana on June 24th, 2005 and added to Troutnut.com by Bnewell on June 27th, 2011.

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