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.

Stream photos

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Amphizoa Beetle Larva Amphizoa Beetle Larva

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington

This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).

5 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.

irradecant blue damselfly

Argia Damselfly Nymph

3 Pictures

Dorsal view of a Argia (Coenagrionidae) Damselfly Nymph from Fall Creek in New York

My friend Willy captured this early instar damselfly nymph and brought it to me for identification. It is more robust and stocky at this early stage than the spindly appearance of the later instars, and its appearance is less familiar.

Collected August 27, 2005 from Fall Creek in New York

Added by Troutnut on April 14, 2006

Collected August 27, 2005 from Fall Creek in New York and added by Troutnut on April 14, 2006

Mwmeci
Posts: 1

Mwmeci on Jul 3, 2008July 3rd, 2008, 2:32 pm EDT

The trout in Wisconsin on July 3, 2008 were eating the fly's as they emerged. Gosh they make a ruckus as they took to the air. They only emerged under a very low bridge, not upstream or downstream from the bridge. I've never witnessed this before.