Caterpillar foods: willow, poplar, cherry, apple, pear, birch, oak, beach, basswood, and others; also recorded on currant and blueberry (Bugguide)
This is the more common color variation of Limenitis arthemis that we see here.
6/3/2010 Red-spotted Purples, a Viceroy and a Silvery Checkerspot clustering on animal scat
6/3/2010 White Admiral and Red-spotted Purple
These next two have a bit of the white band that distinguishes Red-spotted Purples. There are some butterflies that show intermediate coloring between the two subspecies.