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.

Waterfalls over smooth bedrock above Titcomb Lakes

From Titcomb Basin in Wyoming

Stream photos

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Limnephilidae (Giant Sedges) Caddisfly Larva Limnephilidae (Giant Sedges) Caddisfly Larva

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington

This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.

10 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 July 10, 2017

Photos by Troutnut from the North Fork Stillaguamish River in Washington

Closeup insects by Troutnut from the North Fork Stillaguamish River in Washington

14
Male Epeorus albertae (Pink Lady) Mayfly Spinner

Lateral view of a Male Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Spinner from the North Fork Stillaguamish River in Washington

7
Female Epeorus albertae (Pink Lady) Mayfly Dun

Artistic view of a Female Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Dun from the North Fork Stillaguamish River in Washington

5
Female Baetidae (Blue-Winged Olive) Mayfly Dun

Lateral view of a Female Baetidae (Blue-Winged Olive) Mayfly Dun from the North Fork Stillaguamish River in Washington

4
Female Epeorus albertae (Pink Lady) Mayfly Spinner

Lateral view of a Female Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Spinner from the North Fork Stillaguamish River in Washington

Comments / replies

Wbranch

York & Starlight PA

Posts: 2635

Wbranch on Jul 15, 2017July 15th, 2017, 8:24 am EDT

Jason,

Lovely stream and photos. What was that black elongated mass in the bottom of the pool in picture #4?

I assume wild rainbows and maybe some cutthroat? Any steelhead?

Catskill fly fisher for fifty-five years.

Crepuscular