Baltimore Checkerspot
Euphydryas phaeton

f20 @ 1/500s, ISO:2000, Nikon D3S w 105mm macro

"Baltimore Checkerspot," Wikipedia, the free encyclopedia. Despite the species status as Maryland state insect, the population in Maryland has faced significant decline and is currently listed by the Maryland Department of Natural Resources as "rare, threatened, and endangered" animal list.
Francis A. Crane Wildlife Management Area, East Falmouth, Massachusetts