Janice J. Stiefel That's a good question, Jim. Perhaps I used the wrong word. I used "shed" in my data base notes, but actually I think the hairs just changed color from white to dark brown. I don't recall seeing any "shed" hairs. I had the same experience with this species in 2003. At that time, it was even more of a shock. I had found the tiny larva on Big Tooth Aspen (Populus grandidentata). I reared it, but the pupa never eclosed, so I didn't know what I had until this one was reared in 2005 from eggs laid by the female. In that case, I had the adult specimen from which to make an ID.