Forewing is narrow and pointed, hindwing is somewhat triangular. Upperside of wing is black; forewing has a dull brown patch at the end of the cell. Hindwing has white fringe on the outer margin. Male has a costal fold containing yellow scent scales; female has a patch of scent scales on the 7th abdominal segment.
Spotted nectaring on wildflowers in a overgrown meadow next to a hardwood forest. Habitat: Deserts, warm or arid lowlands, roadsides.
Caterpillar Hosts: Various legumes including New Mexican locust (Robinia neomexicana), bur clover (Medicago hispida), deerweed (Lotus scoparius), desert ironwood (Olneya tesota), and vetch (Vicia species). Adult Food: Flower nectar. Range: Southern California, Arizona, New Mexico, and Texas south to Argentina. Strays north to northern Illinois, northeast Nebraska, central Colorado, southern Nevada, and central California.