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

Phoebis sennae marcellina ♂ wingspan 58 mm, COSTA RICA: Alajuela Prov.:
Area de Conservacion Guanacaste, Sector San Cristobal,
Potrero Argentina, 520m, collected on 10-I-2001 as last instar,
eclosed on 26-I-2001, foodplant Senna obtusifolia
voucher code 01-SRNP-122, image code 01-SRNP-122-DHJ98296.jpg
image from http://janzen.sas.upenn.edu/