This produces a lacy, skeletonized injury on infested leaves. Pear slug larvae are easy to control with any home orchard insecticide, including insecticidal soaps. Larvae also may be washed off with a vigorous jet of water. A light dusting of the leaves with wood ashes is another highly effective control. See fact sheet 5.560, Pear Slugs .
White apple leafhopper injury to foliage.
They are small, pale-colored, elongated Insects that are found on the undersides of the leaves, where they feed on sap. Injuries by these Insects produce characteristic white flecking. Serious infestations are rare in backyard plantings but occur frequently in orchards where insecticides kill many of their natural enemies. Caterpillars of climbing cutworms, such as the speckled green fruitworm and the fruittree leafroller, may chew areas of young apples that later appear as dimpled scabs on the fruit surface. Problems with catfacing Insects are of little concern to home orchardists, because the fruit remains in generally good condition despite the scarring.