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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 Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.
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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Chironomidae (Midge) True Fly Larva Pictures

Ruler view of a Chironomidae (Midge) True Fly Larva from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.
Dorsal view of a Chironomidae (Midge) True Fly Larva from the South Fork Snoqualmie River in Washington
Chironomidae (Midge) True Fly Larva from the South Fork Snoqualmie River in Washington
Chironomidae (Midge) True Fly Larva from the South Fork Snoqualmie River in Washington
Chironomidae (Midge) True Fly Larva from the South Fork Snoqualmie River in Washington
Chironomidae (Midge) True Fly Larva from the South Fork Snoqualmie River in Washington

This true fly 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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Chironomidae (Midge) True Fly Larva 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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