A primarily tropical species, the Julia is a rapid flier that easily maneuvers among dense forest vegetation. Males actively patrol woodland edges, trails and adjacent open areas for females. Strongly attracted to flowers, adults readily stop at available flowers to nectar but rarely remain at any one blossom for long. They are particularly fond of Lantana and Shepherd's Needle (Bidens alba). Unlike most other longwing butterflies, the Julia has a relatively short lifespan, surviving only a few weeks as an adult. Nikon D7000; 1/2000s; f/7.1; ISO 400