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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.

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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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Male Rhithrogena virilis Mayfly Spinner Pictures

I'm guessing this is Rhithrogena virilis based on resemblance to a similar specimen collected last year.

Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington
Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington
Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington
Lateral view of a Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington
Ruler view of a Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1/16".
Artistic view of a Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington
Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington
Male Rhithrogena virilis (Heptageniidae) Mayfly Spinner from the South Fork Snoqualmie River in Washington

This mayfly was collected from the South Fork Snoqualmie River in Washington on June 16th, 2018 and added to Troutnut.com by Troutnut on June 23rd, 2018.


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Male Rhithrogena virilis Mayfly Spinner Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: June 16th, 2018
Added to site: June 23rd, 2018
Author: Troutnut
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