Archips spp.; Choristoneura spp.; Argyrotaenia spp.
- adults: wingspan ~ 3/4 inch; wings held tent-like over back; color variable
- larvae: up to 1 inch and found within rolled leaves; typically green with a brown to black head capsule
- eggs: gray brown and often laid in overlapping clusters on or around the plant
Host Plants, Diet & Damage
- deciduous trees and shrubs; fruit trees
- larvae feed on leaves and roll leaves using silk
- leaf skeletonizing and leaf damage; fruit cat-facing or loss
- defoliation in severe cases
Biology, Life Cycle & Damaging Life Stage
- overwinter as eggs or larvae on or around host plants
- overwintering eggs hatch after budbreak
- species overwintering as larvae emerge around budbreak
- larvae spend most of their developmental period inside of the rolled leaf
- species with one generation per year will lay overwintering eggs in mid-summer
- species with two generations per year will lay eggs in spring and summer
- pupate within the rolled leaf, or on or around the host
- one to two generations per year depending on species
- larvae are the damaging stage
- Keep trees healthy with proper cultural practices.
- Monitor trees for egg masses, larvae and rolled leaves.
- Management is seldom warranted; tolerate pest.
- If needed, apply an insecticide (azadirachtin; Bacillus thuringiensis var. kurstaki; carbamate; pyrethroid; spinosyn) to foliage targeting newly hatched larvae in spring.