Details:

(Top) Canon EOS 10D,  shutter 1/180 second, aperture f16, ISO 400, Canon EF 100 mm macro lens, Canon MR-14EX flash.

(Bottom) Canon EOS 10D,  shutter 1/350 second, aperture f13, ISO 800, Canon EF 100 mm macro lens.

Selected References:

Brock Jim P., Kaufman Kenn. Butterflies of North America. New York: Houghton Mifflin Company, 2003. P 204-205.

Struttmann Jane M. USGS Northern Prairie Wildlife Research Center. "Monarch  (Danaus plexippus)." Butterflies of North America / Butterflies of Iowa. <http://www.npwrc.usgs.gov/resource/distr/lepid/bflyusa/ia/225.htm > (03 Sep. 2005).