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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.

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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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Drunella cornuta (Large Blue-Winged Olive) Mayfly Nymph Pictures

Ruler view of a Drunella cornuta (Ephemerellidae) (Large Blue-Winged Olive) Mayfly Nymph from Paradise Creek in Pennsylvania The smallest ruler marks are 1 mm.
Ventral view of a Drunella cornuta (Ephemerellidae) (Large Blue-Winged Olive) Mayfly Nymph from Paradise Creek in Pennsylvania
Dorsal view of a Drunella cornuta (Ephemerellidae) (Large Blue-Winged Olive) Mayfly Nymph from Paradise Creek in Pennsylvania
Drunella cornuta (Ephemerellidae) (Large Blue-Winged Olive) Mayfly Nymph from Paradise Creek in Pennsylvania

This mayfly was collected from Paradise Creek in Pennsylvania on May 29th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.


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Drunella cornuta (Large Blue-Winged Olive) Mayfly Nymph Pictures

Collection details
Location: Paradise Creek, Pennsylvania
Date: May 29th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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