Epargyreus skipper

Tricky one!! Could be any of them... Windi: http://butterfliesofamerica.com/epargyreus_windi_specimens.htm http://www.butterfliesofamerica.com/L/ih/windi-Epargyreus-Hol-verso_i.htm Exadeus: http://www.butterfliesofamerica.com/ih02/Epargyreus_exadeus_cruza_Holland31_i.htm Aspina: http://www.butterfliesofamerica.com/L/imagehtmls/Hesp/Epargyreus_aspina_TYPE_COLOMBIA_BOGOTA_BMNH_140452-BMNH-3_i.htm http://www.butterfliesofamerica.com/L/imagehtmls/Hesp/Epargyreus_aspina_male_September_13_2005_road_above_La_Bahada_SE_of_San_i.htm maybe even Spina: http://www.butterfliesofamerica.com/L/epargyreus_s_spina_specimens.htm Key criteria is possible the size and distance from the smaller white spot to the white patch. But impossible to judge this with your perspective and you would need to see the veins clearly.