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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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 grandis (Western Green Drake) Mayfly Nymph Pictures

Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Dorsal view of a Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Ventral view of a Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Ruler view of a Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.
Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph 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 18th, 2018.


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Drunella grandis (Western Green Drake) Mayfly Nymph Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: June 16th, 2018
Added to site: June 18th, 2018
Author: Troutnut
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