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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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Mcflyangler
Mcflyangler's profile picture
New Mexico, United States

Posts: 35
Mcflyangler on Aug 21, 2016August 21st, 2016, 9:19 pm EDT
The adams is one of the most popular dry flies. Generally it is tied with grizzly and brown hackle, this one only uses grizzly hackle to mimic a mosquito. Also the adams is most popular in a size 14 hook, but I tie this a bit smaller in a size 18. If you live in area's with really small mosquito's then you can tie up to a size 22 as well. Having a double hackle, this fly floats very high and works well for fast moving water. You can use only one hackle for slower moving water if you want.

Hook: Umpqua U002 size 18-22
Tail: Grizzly hackle fibers
Body: Gray dry fly dubbing
Wing: Grizzly hackle tips
Hackle: Grizzly hackle made for the size hook
Thread: Ultra thread 70 denier in gray

http://www.mcflyangler.com/freshwater/dry-flies/mosquito-adams-fly
Mc Fly Angler
http://www.mcflyangler.com
https://www.youtube.com/c/mcflylures

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