Great Spangled Fritillary (Speyeria cybele)
From Butterflies and Moths of North America:
Life history: Males patrol open areas for females. Eggs are laid in late summer on or near host violets. Newly-hatched caterpillars do not feed, but overwinter until spring, when they eat young violet leaves.
Caterpillar hosts: Various violet species (Viola).
Adult food: Nectar from many species of flowers including milkweeds, thistles, ironweed, dogbane, mountain laurel, verbena, vetch, bergamot, red clover, joe-pye weed, and purple coneflower.
Habitat: Open, moist places including fields, valleys, pastures, right-of-ways, meadows, open woodland, prairies.
Range: Throughout most of central and northern North America. (See link above for distribution map.)
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