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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.

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.

Male Tallaperla maria (Common Roachfly) Stonefly Adult Pictures

The adult stoneflies of this family look surprisingly normal given the strange shape of the nymphs. I tried to identify it beyond family level 15 years after collecting it, based on my photos, which are not ideal. It's difficult even to tell the gender for sure because I don't have a good picture of the terminalia, but the body size suggests it's a male, and the species ranges suggest either Peltoperla arcuata or a male Tallaperla maria. One distinctive feature of the original description of this species is that the antennae are paler for a short distance beyond the first two thick, dark segments. That can be seen on this specimen and on a specimen on BugGuide identified as Tallaperla maria.

Body length (red) 8 mm, forewing length (blue) 10.5 mm

Ruler view of a Male Tallaperla maria (Peltoperlidae) (Roachfly) Stonefly Adult from Mystery Creek #42 in Pennsylvania The smallest ruler marks are 1 mm.
Lateral view of a Male Tallaperla maria (Peltoperlidae) (Roachfly) Stonefly Adult from Mystery Creek #42 in Pennsylvania
Dorsal view of a Male Tallaperla maria (Peltoperlidae) (Roachfly) Stonefly Adult from Mystery Creek #42 in Pennsylvania
Male Tallaperla maria (Peltoperlidae) (Roachfly) Stonefly Adult from Mystery Creek #42 in Pennsylvania
Ventral view of a Male Tallaperla maria (Peltoperlidae) (Roachfly) Stonefly Adult from Mystery Creek #42 in Pennsylvania
Male Tallaperla maria (Peltoperlidae) (Roachfly) Stonefly Adult from Mystery Creek #42 in Pennsylvania

This stonefly was collected from Mystery Creek #42 in Pennsylvania on May 28th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.


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Male Tallaperla maria (Common Roachfly) Stonefly Adult Pictures

Collection details
Location: Mystery Creek #42, Pennsylvania
Date: May 28th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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