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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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Rhithrogena hageni (Western Black Quill) Mayfly Nymph Pictures

This mature nymph was collected in the same riffle as a male spinner, from which I got the identification for both.

Ventral view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Dorsal view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Ruler view of a Rhithrogena hageni (Heptageniidae) (Western Black Quill) Mayfly Nymph from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.

This mayfly was collected from the South Fork Snoqualmie River in Washington on May 14th, 2022 and added to Troutnut.com by Troutnut on May 16th, 2022.


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Rhithrogena hageni (Western Black Quill) Mayfly Nymph Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: May 14th, 2022
Added to site: May 16th, 2022
Author: Troutnut
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