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.

Middle Fork Snoqualmie

From the Middle Fork Snoqualmie River in Washington

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (Summer Flier Sedge) Caddisfly Larva

Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington

24 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.

Stonefly confusion

Feathers5
Posts: 287

Feathers5 on Mar 7, 2017March 7th, 2017, 1:11 am EST

We have 2 stoneflies hatch now in PA. One I call the snow-stone because it's easily seen walking the snow banks, and is very tiny. I believe it's entomological name is Taeniopterygidae?
The other one is larger like a size 14 or 16. Is it the Early brownstone? What size is the nymph and adult?

Millcreek
Healdsburg, CA

Posts: 344

Millcreek on Mar 7, 2017March 7th, 2017, 4:28 am EST

Feathers5-

These links may help, or they may not :).

http://paaquaticfliesrus.bd.psu.edu/webroot/Stonefly/StoneflyCommonNames.aspx

https://www.youtube.com/watch?v=x2zoYboWNnI

"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

Crepuscular

Boiling Springs, PA

Posts: 920

Crepuscular on Mar 7, 2017March 7th, 2017, 9:52 pm EST

We have 2 stoneflies hatch now in PA. One I call the snow-stone because it's easily seen walking the snow banks, and is very tiny. I believe it's entomological name is Taeniopterygidae?
The other one is larger like a size 14 or 16. Is it the Early brownstone? What size is the nymph and adult?

The small stoneflies you are seeing on the snow are likely Capniidae. I don't think I've ever caught a fish on an imitation of that fly. The larger ones are the Taeniopterygidae. Now those are a different story, and often account for some decent dry fly fishing. I'd say they are around a size 16.They often look bigger because their wings extend a little past the abdomen. But I pretty much tie all my adult imitations on a size 16.