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.

Looking across Island Lake toward the Titcomb Basin—one of the popular crown jewels of the Wind River Mountains

From Island Lake in Wyoming

Stream photos

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Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva

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.

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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.

Female Tricorythodes (Trico) Mayfly Spinner Pictures

I photographed this Trico alive, although it didn't have much time left. These things die very quickly after they mate and it's hard to rush them back to the studio.

Lateral view of a Female Tricorythodes (Leptohyphidae) (Trico) Mayfly Spinner from the Neversink River in New York

Female Tricorythodes (Leptohyphidae) (Trico) Mayfly Spinner from the Neversink River in New York

Artistic view of a Female Tricorythodes (Leptohyphidae) (Trico) Mayfly Spinner from the Neversink River in New York

Ventral view of a Female Tricorythodes (Leptohyphidae) (Trico) Mayfly Spinner from the Neversink River in New York

Ruler view of a Female Tricorythodes (Leptohyphidae) (Trico) Mayfly Spinner from the Neversink River in New York The smallest ruler marks are 1 mm.

This mayfly was collected from the Neversink River in New York on September 8th, 2006 and added to Troutnut.com by Troutnut on October 4th, 2006.

Discussions of this Spinner

Trico shuck

Posted by Martinlf on Jul 22, 2016

Last reply on Jul 22, 2016 by Martinlf

Catching some fish on duns one early morning I pulled a cripple from the drift and noticed that the shuck looked cream colored to me. Has anyone else noticed this?

Little White-winged Black

1 replies

Posted by Jack_k on Mar 14, 2009

Last reply on Mar 15, 2009 by Martinlf

These Tricos are found on most reservoirs in the Great Basin. They come off the water late in the afternoon and early evening. They pull out of their subimago shuck on any object, cars, shirt sleeves, eye glasses, or rocks. They appear as clouds on most reservoirs and stimulate an Alfred Hitchcock-like feeding frenzy with the fish. They are short lived but what an impact. This hatch lasts for several weeks here in the Great Basin.
A good spent wing example can be found at Just2ty4.com.

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