Description: This is a very large butterfly, up to 63 mm. It's yellow with black stripes. Females have blue dusting on the hind wing. Females also have two color forms. Dark forms are black with blue dusting on the hindwing.

 

Habitat and Distribution: Widespread and common throughout the United States however this species is only rumored to have been seen in the Keys but there are no confirmed reports 

 

Host Plant: Sweet Bay

 

Natural History: This species does not breed in the Keys and should be concidered a highly unusual stray