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.

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders

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.

identification help

BDK has attached these 2 pictures to aid in identification. The message is below.

BDK

dfw , Texas

Posts: 1

BDK on Jun 3, 2014June 3rd, 2014, 9:50 am EDT

We where using a seine this weekend there where alot of these in the river can not identify it . Help would be most appreciated

Entoman

Northern CA & ID

Posts: 2604

Entoman on Jun 3, 2014June 3rd, 2014, 12:25 pm EDT

Welcome to the forum, BDK.

Those are Isonychia (Leadwing Coachman) mayfly nymphs.

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Jun 3, 2014June 3rd, 2014, 6:00 pm EDT

Yes! Strong swimmers they are. Welcome.

Blue-winged OlivesBaetis

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