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.

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Tricorythodes (Trico) Mayfly Nymph Tricorythodes (Trico) Mayfly Nymph

Dorsal view of a Tricorythodes (Leptohyphidae) (Trico) Mayfly Nymph from Mystery Creek #308 in Washington

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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.

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Anyone able to ID this Chloroperlid?

Female Sweltsa (Sallfly) Stonefly Adult

8 Pictures

Lateral view of a Female Sweltsa (Chloroperlidae) (Sallfly) Stonefly Adult from the Madison River in Montana

These stoneflies--abundant during midday--seemed at first to be flying around with plain yellow bodies, but on closer inspection turn out to have striking, fiery red abdomens.

Collected June 29, 2019 from the Madison River in Montana

Added by Troutnut on July 17, 2019

Collected June 29, 2019 from the Madison River in Montana and added by Troutnut on July 17, 2019

Troutnut

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Bellevue, WA

Posts: 2758

Troutnut on Jul 17, 2019July 17th, 2019, 4:56 pm EDT

I didn't do the best job taking pictures of key characteristics (such as wing venation), but I'm hoping somebody might be familiar with the striking color pattern. I'd love to know the species on this one.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Blue-winged OlivesBaetis

Troutnut Forum › Specimen Discussion › Anyone able to ID this Chloroperlid?