28mm f2.8 1/50s ISO100
Dryas iulia (incorrectly spelled julia), commonly called the Julia Butterfly or Julia Heliconian, is a species of brush-footed butterfly. The sole representative of its genus Dryas, it is native from Brazil to southern Texas and Florida, and in summer can sometimes be found as far north as easternNebraska. Over 15 subspecies have been described.
This butterfly is a fast flier and frequents clearings, paths, and margins of forests and woodlands. It feeds on the nectar of flowers, such as lantanas(Lantana) and Shepherd's-needle (Scandix pecten-veneris). Its caterpillars feeds on leaves of passion vines including Passiflora affinis and Yellow Passionflower (P. lutea) in Texas.
The species is popular in butterfly houses because it is long-lived and active throughout the day.
(thank you wikipedia)