On Feb 21, 2007, BST_Lover from Oklahoma City, OK (Zone 7a) wrote:
Host plants are grape, ampelopsis brevipedunculata, and Virginia Creeper, all in the grape family. This photo is the brown form, more common in late summer-early fall. The green form is more common in spring-early summer.
On Jul 17, 2010, tardis from Albuquerque, NM wrote:
I have found their caterpillars on Virginia Creeper foliage and adults feeding on Datura and Ipomoea alba flower nectar here in Albuquerque. They aren't abundant and I don't mind the damage as the adults are extremely attractive and very entertaining to watch at dusk, bobbing drunkenly amongst the Datura flowers with their long probosci dangling.