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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Male Acentrella insignificans (Tiny Blue-Winged Olive) Mayfly Nymph Pictures

Another nymph probably of the same species as this one emerged and was photographed as a dun and partly-molted spinner.

Ruler view of a Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington The smallest ruler marks are 1 mm.
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Dorsal view of a Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Ventral view of a Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington
Male Acentrella insignificans (Baetidae) (Tiny Blue-Winged Olive) Mayfly Nymph from the Yakima River in Washington

This mayfly was collected from the Yakima River in Washington on September 12th, 2020 and added to Troutnut.com by Troutnut on September 19th, 2020.


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Male Acentrella insignificans (Tiny Blue-Winged Olive) Mayfly Nymph Pictures

Collection details
Location: Yakima River, Washington
Date: September 12th, 2020
Added to site: September 19th, 2020
Author: Troutnut
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