The gypsy moth (Lymantria dispar) is a weak flyer but a subspecies, Asian gypsy moth, is an excellent flyer and the two can interbreed and produce offspring with varying degrees of flight.
Gypsy Moth Pest Profile
Source: California Department of Food and AgricultureVisit Website
The European gypsy moth is a threat to our trees and shrubs. Learn to spot it and report it.
Source: Hungry Pests - USDAVisit Website
Images courtesy of Bugwood.org