This appears morphologically identical to photos I find of Hodges 2413 (Swammerdamia caesiella) in Europe. The cocoon web is the same too and different from Swammerdamia pyrella. This was one of several found on white birch (Betula papyrifera) leaves. I'll look tomorrow and try for improved photos.
Another individual from a day later:
Contributed by
David E. Reed on 22 September, 2017 - 7:45pm
Last updated 31 May, 2020 - 2:54am