Hummingbird and Butterfly Gardening: Help ID my visitor, 1 by Florida9

Florida9 wrote:
I would appreciate some help in identifying a visitor to my Monarda today. I've seen him twice now. While the Monarchs and Swallowtails chase each other around the buddleia, this one, a fairly small guy, hides in the monarda and salvia. I tried looking in Butterfliesandmoths.org and he looked similar to a White Pacock (anartia jatrophae) but the number of black dots up the wings ar different and the coloring is just a little off. Does anyone have any other ideas?