When looking through the 22 "Buckeye" images at Acclaim Images.com this Buckeye Butterfly on Butterfly Bush was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
Buckeye Butterfly on Butterfly Bush
Buckeye Butterfly on Butterfly Bush.

Some related terms for more images:
pollenation,  bugs,  insect,  pollenating,  animal,  animals,  purple flowers,  pollinating,  entomology,  buckeye butterflies,  junonia coenia,  buckeye butterfly,  butterfly bush,  lepidoptera,  buckeyes,  insects,  insect pollenation,  insect pollination,  flying insects,