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.

The Clark's Fork of the Yellowstone River in Wyoming

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.

Site updates from March 26, 2012

Closeup insects by Bnewell from the Touchet River in Washington

Female Zapada columbiana (Tiny Winter Black) Stonefly Adult

2 Pictures

Female Zapada columbiana (Nemouridae) (Tiny Winter Black) Stonefly Adult from the N. Fk Touchet River in Washington

Collected March 25, 2012 from the N. Fk Touchet River in Washington

Added by Bnewell on March 26, 2012

Collected March 25, 2012 from the N. Fk Touchet River in Washington and added by Bnewell on March 26, 2012

Comments / replies

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Mar 26, 2012March 26th, 2012, 5:39 pm EDT

Wow, beautiful stonefly Bob! I've never seen one like that.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Entoman

Northern CA & ID

Posts: 2604

Entoman on Mar 27, 2012March 27th, 2012, 1:11 am EDT

Ditto!

"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