Nymphalis antiopa
Pest description and crop damage Adult is a large butterfly, with purplish brown wings bordered with a wide yellow stripe inside of which is a row of blue or purple spots. Larvae are purplish black with a row of orange or red spots along the back. They have brownish prolegs and are clothed with long, forked spines.
Management-chemical control
See:
Chemical Control of Nursery Pests
For more information
Johnson, W.T. and H.H. Lyon (1991), Insects That Feed on Trees and Shrubs, 2nd ed., Cornell University Press (p. 152).