Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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This specimen keys to the Epeorus albertae group of species. Of the five species in that group, the two known in Washington state are Epeorus albertae and Epeorus dulciana. Of the two, albertae has been collected in vastly more locations in Washington than dulciana, suggesting it is far more common. On that basis alone I'm tentatively putting this nymph in albertae, with the large caveat that there's no real information to rule out dulciana.
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Troutnut.com User Fly_Fisher (Tom)
Troutnut.com User Fly_Fisher (Tom)
Real Name
Tom
Location
Colorado
Biography & Thoughts
FLy Fishing 40 years; tying flies 36. Grew up with trout / salmon stream in backyard in Finger Lakes. Only use hand-tied leaders. Building rods for 30+ years. Have somewhere between 6 and 7 dozen fly rods. (No, I don't NEED that many, but I like having a lot even if my wife doesn't.) Dislike graphite (except for really big (10+ lb. trout / salmon). Prefer the feel of cane. Fish DT lines exclusively for trout and salmon. Would prefer to catch one trout on a dry to ten on nymphs.
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Fly Fisher