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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.

View from atop the permafrost slump From the Selawik River in Alaska

Stream photos

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Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)
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Limnephilus (Summer Flier Sedge) Caddisfly LarvaLimnephilus (Summer Flier Sedge) Caddisfly Larva
Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington
24 Recently Added Photos
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 June 21, 2006

Updates from June 21, 2006

Photos by Troutnut

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders
Spring Creek in Wisconsin
Spring Creek in Wisconsin
This huge pile of stones was deposited alongside a very small brook trout stream in a huge flood about 9 months before this photo was taken. From Spring Creek in Wisconsin
Spring Creek in Wisconsin
Spring Creek in Wisconsin
Spring Creek in Wisconsin

Underwater photos by Troutnut from Spring Creek in Wisconsin

Above and below a small brook trout stream. From Spring Creek in Wisconsin
The large caddisfly case (really less than 1/2 inch) is a Brachycentridae larva. The other cases are actually the protective sheaths of black fly (Simuliidae) pupae. The two antler-like pieces sticking out of each one are not legs, but antennal sheaths. From Spring Creek in Wisconsin
These are glossosomatids, Jason. They are probably Glossosoma nigrior, though it is possible that we are looking at mixed species. The ones to the right with their aggregate of similar sized grains are classic Glossosoma, while the ones to the left with the large anchor pebbles could possibly be Agapetus. Regardless, they're all commonly referred to as saddle case makers. From Spring Creek in Wisconsin
Spring Creek in Wisconsin
Spring Creek in Wisconsin

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