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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.

Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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.

Dorsal view of a Ameletus (Ameletidae) (Brown Dun) Mayfly Nymph from the South Fork Snoqualmie River in Washington
Millcreek
Healdsburg, CA

Posts: 344
Millcreek on Jan 27, 2020January 27th, 2020, 5:08 am EST
This looks more like an Ameletus species than a Siphlonurus species. At any rate it isn't Siphlonurus because it dosen't have double gills on any segments.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on Feb 2, 2020February 2nd, 2020, 6:11 pm EST
Good catch, thanks.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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