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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

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 Stenonema femoratum (Heptageniidae) (Cream Cahill) Mayfly Nymph from Mongaup Creek in New York
Dewalt
Posts: 1
Dewalt on Jun 12, 2013June 12th, 2013, 2:05 pm EDT
Only Stenonema left in North America (after taxonomic revision) is S. femoratum. The underside of the abdomen has rows of roundish dark spots at the lateral margins. This one does not.
Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Jun 12, 2013June 12th, 2013, 2:52 pm EDT
Hi Dewalt -

Welcome to the forum.

This specimen appears to have rounded gills as far as I can tell, and I'm sure Jason had it under a microscope for a better look than shows here. I wasn't aware that sternal maculation was diagnostic for this (now) monotypical genus. What is the source of your information?
"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
Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Jun 12, 2013June 12th, 2013, 3:21 pm EDT
I'm seeing lateral projections on 2 - 9 and rounded gills. I suggest we hold off on speculative posts that will fill this topic up with unnecessary clutter, at least until we hear more from Dewalt on his rationale. I'd sure like him to be able to address the central issue without having to scroll up the topic too far to find it.
"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

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