Image from: Godman, Frederick DuCane, and Osbert Salvin 1893-94. Biologia Centrali-Americana. Insecta. Lepidoptera-Rhopalocera. London, Dulau & Co., Bernard Quaritch. 2: 297-312 (October 1893), 313-328 (November 1893), 329-352, pl. 81 (April 1894), f. 18
Image courtesy Missouri Botanical Garden. http://www.botanicus.org/