李小食心虫主要危害樱桃、李子和杏。李子受害尤为严重。某幼虫蛙食豆籽大小的李果,入果后蛀食果仁,将果仁食空,幼果呈紫红色脱落。李小食心虫在我国北方一般一年发生两代,以老熟幼虫在树干周围50cm 的范围内1—5cm 深处越冬。少数可在树干老翘皮内结茧越冬。越冬 Li Xiao heartworm main harm cherry, plum and apricot. Plum victims are particularly serious. Some larvae eat beans bean seeds the size of the fruit, after eating fruit nuts, the nuts empty, young fruit was purple off. Li Xiaogong worms occur in our northern China a year generally two generations to mature larvae in the trunk within the range of 50cm over the winter of 1-5cm depth. A few can be old in the trunk of the old Alice cocoon wintering. Winter