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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.

Prostoia (Tiny Winter Black) Stonefly Nymph Pictures

Dorsal view of a Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York
Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York
Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York
Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York
Ventral view of a Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York
Prostoia (Nemouridae) (Tiny Winter Black) Stonefly Nymph from Salmon Creek in New York

This stonefly was collected from Salmon Creek in New York on March 29th, 2006 and added to Troutnut.com by Troutnut on April 7th, 2006.

Discussions of this Nymph

Cervical gills
2 replies
Posted by Cteas on Feb 21, 2009
Last reply on Feb 21, 2012 by Lbrize
Where are the cervical gills on this specimen?
Not Capniidae; this is a Nemourid
2 replies
Posted by Acroneuria on Jan 20, 2007
Last reply on Apr 26, 2007 by PeterO
Hard to tell what genus this belongs to; nemourids can be tricky. Capniids are most often confused with Leuctrids--they are very similar.

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Prostoia (Tiny Winter Black) Stonefly Nymph Pictures

Collection details
Location: Salmon Creek, New York
Date: March 29th, 2006
Added to site: April 7th, 2006
Author: Troutnut
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