Porphyrogenes sula (R. Williams & E. Bell, 1940);  Comments: Honduras, possibly Costa Rica TL: Honduras.

Porphyrogenes sula ♂ last instar, length 29 mm
COSTA RICA: Alajuela Prov.: Area de Conservacion Guanacaste, Sector Rincon Rain Forest,
Camino Porvenir, 383m, collected on 11-VIII-2006 as penultimate instar, photographed on 21-VIII-2006
foodplant Machaerium seemannii
voucher code 06-SRNP-42916, image code 06-SRNP-42916-DHJ417037.jpg
image from http://janzen.sas.upenn.edu/

see pinned adult

Comment: This specimen has been identified as P. spina in the following publication: Burns, John McLauren, Daniel H. Janzen, and Winifred Hallwachs 2010. Of many similar species in the Neotropical genus Porphyrogenes (Lepidoptera: Hesperiidae), a new one, repeatedly reared in Costa Rica, is relatively distinct. Proceedings of the entomological Society of Washington 112(1): 32-42, 20 figs., 1 tab. p. 41-42. However, wing shape does not match that of P. spina holotype. The wings are rounder, not as elongated, and tornus of the hindwing is less produced.