QUESTION MARK, (Polygonia interrogationis)
A common anglewing found in the eastern 2/3 of the U.S. It comes in to seasonal forms, summer and winter. This is called seasonal dimorphism. It flies from spring to fall with 2 broods. It can be found in cities, wooded parks and along waterways. An easy way to get a very close look at one is to find a sap-flow in a tree. Many will be attracted to a fermenting sap-flow where they will drunkenly jostle for position. Its common name comes from the white mark on the underside of the hind wing which looks like a question mark.