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

General RegionWyoming
Dates Fished8/08

Details and Discussion

Posts: 1
Sameguy on Feb 13, 2009February 13th, 2009, 1:11 pm EST
MY friend caught this in a high mountain lake in wyoming. Never seen anything like this, wondering if anyone knows what it is.

Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Feb 13, 2009February 13th, 2009, 2:18 pm EST

My guess would be Oncorhynchus clarki utah, which has a common name of Bonneville Cutthroat Trout.
Best regards,
Roger Rohrbeck
St. Michael, Minnesota

Posts: 26
CharlieSawd on Feb 26, 2009February 26th, 2009, 8:39 am EST
I think it is Oncorhynchus clarki lewisi, the westslope cutthroat. Bonni's tend to have more of a yellow hue. There are resident westslopes in north western WY, and as you said you were fishing a high mountain lake, my guess is you were in this region.

Charlie Sawdey

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