Phoebis sennae marcellina (Cramer, 1777);  Comments: SW USA (strays far N), S TX through Panama, most S. America TL: Surinam.

Phoebis sennae marcellina ♂ last instar, length 43 mm
COSTA RICA: Guanacaste Prov.: Area de Conservacion Guanacaste, Sector Cacao,
Cerro Pedregal, 1080m, collected on 30-X-2009 as last instar, photographed on 03-XI-2009
foodplant Senna papillosa
voucher code 09-SRNP-36821, image code 09-SRNP-36821-DHJ468280.JPG
image from http://janzen.sas.upenn.edu/