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Pterourus troilus
Upper surface of the forewing is mostly black with ivory spots along margin. Upper surface of hindwing has orange spot on costal margin and sheen of bluish (female) or bluish-green (male) scales. Underside of hindwing with pale green marginal spots. Wing Span: 3 - 4 inches (7.5 - 10 cm).
This butterfly was spotted along the Greenbrier river in Roncoverete, West Virginia. It inhabits woodlands, fields, roadsides, yards, pine barrens, wooded swamps, and parks.
Spotted on Aug 13, 2013
Submitted on Oct 30, 2013
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