What IS this? This ultra-delicate flyer floated slowly in the air like a large midge with huge tail filaments trailing below. I saw my first of these near the CA/OR border, but it was too high to catch or photograph. Then a second appeared at eye level and I gently caught it on my hand. Both were in Redwood forests of various ages. I am sure even a breath of wind would ground these weak fliers. One of the most interesting insects I have seen recently.