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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.

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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.

Lateral view of a Female Helopicus subvarians (Perlodidae) (Springfly) Stonefly Adult from the West Branch of the Delaware River in New York
I caught this female during her egg-laying flight.
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on Jun 8, 2007June 8th, 2007, 11:12 am EDT
The dark abdomen on this one is pretty striking. Does anyone know what species this is?
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Jun 8, 2007June 8th, 2007, 11:26 am EDT
I probably shouldn't say anything after blowing that Paragnetina/Acroneuria ID, but I seem to recall that those black bands on the underside of the thorax are indicative of Agnetina.
Myersl
Plattsburgh, NY

Posts: 5
Myersl on Apr 7, 2010April 7th, 2010, 6:20 am EDT
Beautiful picture, this is a female of a Helopicus subvarians
myersl
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Apr 7, 2010April 7th, 2010, 7:56 am EDT
Nice catch, Luke. Thanks for correcting the identity of this "cool perlodid." I wasn't very familiar with the Perlodini "springflies" when I made the earlier comment. While we're on the subject, do you recognize this one? http://www.troutnut.com/specimen/488
(Hint for those playing along: it's not Cultus or Arcynopteryx.)

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