梨小食心虫是梨、桃、苹果上的主要害虫。以老熟幼虫在果树枝、干裂皮缝下或果实包装物、贮藏库中结茧越冬,3月份化蛹,4月上中旬羽化,5—6月份主要为害桃树梢(亦可为害苹果树梢),7月中旬起逐渐向梨、苹果树上转移,8月以后为害梨果严重,8月下旬以后陆续越冬。梨小喜欢产卵于光滑的果面、叶面,在梨上常产卵于 Pear Mung Beetle is a pest on pears, peaches and apples. The mature larvae in the fruit branches, dried split sewn or fruit wrapping, cocoon storage in the winter, pupation in March, mid-April emergence, May-June main damage peach shoots (also harmful to apple trees Shoots), since mid-July and gradually to the pear, apple tree transfer, harmful pears serious after August, one after another in late August after winter. Pear like to lay eggs in the smooth fruit surface, foliar, often spawning on pear