Image Credit: Tom Peterson, Fermilab
Identification: Upperside of male brown with purple iridescence; female more orange. Hindwing of both sexes with broad orange band at margin.
Wing Span: 1 1/8 - 1 1/2 inches (3 - 3.8 cm).
Caterpillar Hosts: Knotweeds (Polygonum) and docks (Rumex) in the buckwheat family (Polygonaceae), cinquefoils in the rose family (Rosaceae).
Adult Food: Flower nectar.
Habitat: Disturbed areas including roadsides and open fields; wet meadows, marshes, stream sides, and valleys
http://www.butterfliesandmoths.org/species/Lycaena-helloides