This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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