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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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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.

Updates from July 3, 2009

Closeup insects by Bnewell from Glacier National Park in Montana

Arachnida (Mites and Spiders) Arthropod Nymph from Wetlands in Glacier National Park in Montana
Mites are quite beautiful when viewed with magnification. Some get large like the middle photo which is of a red mite about the size of a pea.

Updates from June 19, 2009

Updates from June 18, 2009

Closeup insects by Bnewell from Murphy Lake in Montana

Procloeon pennulatum (Baetidae) (Tiny Sulphur Dun) Mayfly Nymph from Murphy Lake in Montana
This fragile nymph is easily damaged during sampling making identification more difficult.

Alaska Range and Denali views from the Parks Highway in May 2009

By Troutnut on May 21st, 2009
The Parks is always a spectacular drive, but it was especially stunning on this drive back to Fairbanks from Homer.

Photos by Troutnut from Parks Highway in Alaska

Parks Highway in Alaska
I took this picture on my way home from Homer, from one of the Denali overlooks on the Parks Highway a ways north of Talkeetna.  That is an amazing drive at all times of year, and spring is no exception.  The highest, most distant mountain visible is Denali / Mount McKinley, while the rest of the Alaska Range rises over the Chulitna River in the foreground.

From Parks Highway in Alaska
Denali in the background, towering over the rest of the Alaska Range and the Chulitna River in the foreground.

From Parks Highway in Alaska

Updates from May 9, 2009

Closeup insects by Bnewell from the Big Thompson River in Montana

Cinygmula reticulata (Heptageniidae) (Western Ginger Quill) Mayfly Nymph from the Big Thompson River in Montana
I collected several live specimens of nymphs and reared them to the imago stage. They were C. reticulata. The interesting thing is they were collected in May and were emerging along with Rhithrogena (March Brown). This seems to be an overlooked hatch since in some rivers it emerges very early, before runoff.
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