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Life History: Males perch and patrol for receptive females. Female lays eggs singly on leaves and flowers of the host, which are then eaten by hatching larvae. Hibernates as a chrysalis. Flight: One-2 flights from April-October in northern regions of range; 3 flights in southern regions. Caterpillar Hosts: Leaves of plants in the parsley family (Apiaceae) including Queen Anne's Lace, carrot, celery and dill. Sometimes plants in the citrus family (Rutaceae) are preferred. Adult Food: Nectar from flowers including red clover, milkweed, and thistles. Habitat: A variety of open areas including fields, suburbs, marshes, deserts, and roadsides. Range: Most of the eastern U.S., north into Quebec, west into s. Saskatchewan, Colorado and se. California; south to n. South America. Subspecies coloro in desert Southwest.