Larvae of the species are banded black and white with yellow spots. The eggs are typically laid on plants belonging to the Apiaceae plant family, which are consumed by the larvae upon hatching. Adults feed on nectar and can be attracted to your garden by growing the types of plants that they lay their eggs on, including dill, carrots, and Queen Anne's Lace.
Caterpillars have a rather interesting defense mechanism. They have an organ on their necks known as an Osmeterium, which raises when threatened and produces and extremely distasteful odor.