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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 Setvena wahkeena (Perlodidae) (Wahkeena Springfly) Stonefly Nymph from Mystery Creek #199 in Washington
As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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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Updates from July 1, 2007

Updates from July 1, 2007

Photos by Troutnut from Minto Flats in Alaska

Minto Flats in Alaska
This sky was the perfect scenic complement to the wide-open marsh where we were pike fishing.

From Minto Flats in Alaska
Talk about a bad hair day.  This chartreuse/everglow deceiver had been through about 15 northern pike already.

From Minto Flats in Alaska
I took this picture after midnight, when the pike fishing was still hot.

From Minto Flats in Alaska

Closeup insects by Bnewell from Denali National Park in Alaska

Siphlonurus phyllis (Siphlonuridae) (Gray Drake) Mayfly Nymph from Temporary ponds- Glacier Nat. Park in Alaska
This specimen was the first record from Montana and the first record from the mountain west except Alberta where it was first described. It was found in temporary ponds.The nymph has double gills on all segments. The abdominal stripe is an important feature for identification

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