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.

View from atop the permafrost slump

From the Selawik River in Alaska

Stream photos

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Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington

I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.

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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.

fossil mandibulate capsule-like structures

Prodiamesa Midge Larva

1 Picture

Prodiamesa (Chironomidae) Midge Larva from Rock Creek in Montana

Another head capsule of a chironomid showing the detail of the mouthparts.

Collected December 2, 2005 from Rock Creek in Montana

Added by Bnewell on June 26, 2011

Collected December 2, 2005 from Rock Creek in Montana and added by Bnewell on June 26, 2011

Sachaman
Posts: 1

Sachaman on Aug 21, 2014August 21st, 2014, 7:05 am EDT

Hi, I'm trying to id a fossil but since my area of expertise is not about insects I'd to know if somebody can orient in my search for the affinity of the following two mandibulate capsule-like structures. I looked at several images of similar structures and I decided that they could be chironomid head capsules, but... I don't know how to upload the images. can somebody let me know, please?

Crepuscular