Image from: Godman, Frederick DuCane, and Osbert Salvin 1895. Biologia Centrali-Americana. Insecta. Lepidoptera-Rhopalocera. London, Dulau & Co., Bernard Quaritch. 2: 385-400, pl. 85 (Mar) f. 21
Image courtesy Missouri Botanical Garden. http://www.botanicus.org/