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.
This poor image of an adult caddis was taken streamside on my pack in the Big Horn Mountains, WY at about 9,500 ft.. As the picture shows, the wings did not appear to have any spots and were tan. I am uncertain what genus exist in the area. I have observed but have not photographed the abundant encased larva there and will try to do better on my next trip, which is coming up soon. Most of the cases appear to be formed of rock and metal.