1 为害症状 幼虫孵化后即开始为害果实,蛀虫时咬破果皮,在果面留下针尖大的蛀果孔。蛀果后2天左右,从入果孔流出果胶珠,干涸成白色蜡粉,随着果实的生长,入果孔愈合成一个小黑点,周围果皮略呈凹陷。幼虫入果后在皮下潜食果肉,因而 1 harmful symptoms Larvae begin to bear fruit after hatching, biting peels when borers, in the fruit surface to leave a large hole bore fruit bore. After about 2 days of decoction, the pectin beads flow out from the fruit hole and dry into white wax powder. As the fruit grows, the fruit hole becomes a small black spot and the pericarp is slightly depressed. After the larvae into the fruit in the skin to eat fruit pulp, thus