桃蛀螟(Dichocrocis punctiferalis Guen.)在泰安地区一年发生3代。其食性广,危害严重,第一代危害桃、苹果、梨,第三代主要危害板栗、山楂。8月初至9月中旬产卵于相靠的棚刺间。在板栗生长期,大部分幼虫食害棚皮和棚壁,少部分老龄幼虫蛀入栗实危害,板栗采收堆积后约7—10天,大部分幼虫才蛀入栗实危害。 Dichocrocis punctiferalis Guen. Occurs in Taian for 3 generations a year. Its wide range of diet, serious harm to the first generation of pests, apples, pears, the third generation of major hazards chestnut, hawthorn. Early August to mid-September spawn in the bay between the relying on. In the chestnut growing period, most of larvae eaten shed shed and shed wall, a small part of aging larvae eroded chestnut real danger, chestnut harvest after about 7-10 days accumulation, most of the larvae only bore into the chestnut real danger.