This specimen was feeding on false arnica flowers at the edge of the beach. It was flitting from flower to flower and did not stay for very long on any flower. I believe that it is an American Painted Lady after consulting a few books and bugguide.net. The information at this link is what has enforced that belief: http://bugguide.net/node/view/125111
However, the Field Guide to Butterflies East of the Great Plains states, "the submarginal spots on the hind wing contain blue, beneath there are only two of them, very large." I don't see any blue in those on the top of the wing, but beneath the wing I see two large spots. Please clarify this for me.