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.

I spent more than an hour casting to several rising trout in this pool and caught only two. Its clear water and tricky currents harbor dozens of free-rising, usually very hard-to-catch fish.

From Enfield Creek in New York

Stream photos

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Hydropsyche (Spotted Sedge) Caddisfly Larva Hydropsyche (Spotted Sedge) Caddisfly Larva

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.

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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.

can you identify this bug?

Wchougland has attached this picture to aid in identification. The message is below.

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jan 12, 2021January 12th, 2021, 2:26 pm EST

This looks to me like an oblique view of a spent mayfly spinner with its wings stuck to the water, possibly Callibaetis as there seems to be a bit of a dark mottling near the front of the wings, but it's hard to be sure in this picture. Callibaetis would certainly make sense for high lakes.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist