This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
I have been flyfishing since I was around 10yrs old. My brothers said that it was the only way to fish so it's all I know. I have been serious about it since I was in my early twenties so I have been doing it all together for around 30yrs. I have been a tyer since I was a young man in my twenties and like to learn about the entomology of the flies that I fish.