Pest description and damage Cherry bark tortrix is a pest of most woody ornamental trees and shrubs in the family Rosaceae. The larvae are 0.33 to 0.4 inch long, pale gray to flesh-color with small, pale gray spines scattered on the surface, with a yellowish-brown head. Larvae feed directly on the cambium under the tree bark and may cause death of the tree over time. Otherwise, the feeding activity decreases the supply of nutrients to the tree and increases susceptibility to disease, insect attack, and environmental stress, including cold injury. The first indication of attack is the exuding of a reddish-brown, gum-like resin, mixed with fecal pellets and silk. The trunk and larger limbs of bearing fruit trees are affected, usually at pruning wounds and graft unions.
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