Pest Photo

Bruce spanworm

Operophtera bruceata

Bruce spanworm (Operophtera bruceata) is an insect pest. It was first detected in Vermont in 1989.

This pest of forest and shade trees occurs throughout the northern United States from New England to the Great Lakes where it is a periodic defoliator of a variety of hardwood trees.

For more information about this plant pest, see the CABI data sheet.