Exotic Pest Reporting
Eric LaGasa, Washington State Department of Agriculture, Bugwood.org
Apple ermine moth
Apple ermine moth (Yponomeuta malinellus) is an insect pest of apple trees. It is a native of Eurasia and was first detected in Washington in 1985.
Larvae of this moth can cause severe defoliation of apple trees. Feeding and mining begins with leaves followed by gregarious feeding protected by a silken web occurring in May and early June.