Details:

Canon EOS 10D,  shutter 1/90 second, aperture f6.7, ISO 1600, Canon EF 100 mm macro lens, Canon MR-14EX flash.

Selected References:

Brock Jim P., Kaufman Kenn. Butterflies of North America. New York: Houghton Mifflin Company, 2003. P 28-29.

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/895.htm > (03 Sep. 2005).