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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 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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Closeup insects by Bnewell from the Kwethluk River in Alaska

Ephemerella aurivillii (Ephemerellidae) Mayfly Nymph from the Kwethluk River in Alaska
I have collected this species in Montana but it is very common in Alaska streams.
Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from the Kwethluk River in Alaska
This is probably Isoperla petersoni, a very common Perlodid stonely in Alaska streams.
Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the Kwethluk River in Alaska
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