梨小食心虫在我们地区俗称“桃折梢虫”,多发生于桃、梨或桃、苹果混植的果园里,前期主要为害桃树、李树、杏树和野生的欧李;后期主要为害梨和苹果.营口地区一年可发生3～4代,均以老熟幼虫在桃、梨、苹果树根颈和枝干老翘皮下和剪锯口裂缝等处做茧越冬.第二年梨芽萌动至花期,越冬幼虫化蛹,并逐渐羽化为成虫. Pear bore insects in our area commonly known as “peach tipworm” occurred in peaches, pears or peaches, apple orchard, the main pre-pests, plums, almond trees and wild European plum; later mainly pear And apple.Yingkou area can occur 3 to 4 generations a year, are mature larvae in the peach, pear, apple tree roots and branches of the old Alice under the skin and cut the cracks at the mouth of the cocoon do cocoon winter sprout To florescence, overwintering larva pupation, and gradually emergence into adults.