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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 Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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 Baetidae (Blue-Winged Olive) Mayfly Spinner Pictures

I love the shape of this guy's eyes.

This mayfly was collected from unknown in Wisconsin on May 24th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.


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Male Baetidae (Blue-Winged Olive) Mayfly Spinner Pictures

Collection details
Location: unknown, Wisconsin
Date: May 24th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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