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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 Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
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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Epeorus longimanus (Slate Brown Dun) Mayfly Nymph Pictures

Dorsal view of a Epeorus longimanus (Heptageniidae) (Slate Brown Dun) Mayfly Nymph from the Dosewallips River in Washington
Ruler view of a Epeorus longimanus (Heptageniidae) (Slate Brown Dun) Mayfly Nymph from the Dosewallips River in Washington The smallest ruler marks are 1 mm.
Ventral view of a Epeorus longimanus (Heptageniidae) (Slate Brown Dun) Mayfly Nymph from the Dosewallips River in Washington
Epeorus longimanus (Heptageniidae) (Slate Brown Dun) Mayfly Nymph from the Dosewallips River in Washington

This mayfly was collected from the Dosewallips River in Washington on July 6th, 2020 and added to Troutnut.com by Troutnut on July 12th, 2020.


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Epeorus longimanus (Slate Brown Dun) Mayfly Nymph Pictures

Collection details
Location: Dosewallips River, Washington
Date: July 6th, 2020
Added to site: July 12th, 2020
Author: Troutnut
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