北锯龟甲 [Basiprionotabisignata(Boheman) ]是泡桐的重要害虫 ,在云南省宣威市每年发生 1代 ,以成虫在石块下、树皮缝、地被物下或表土中越冬 ,4月上旬为成虫交配产卵期 ,交尾时间 2 0～ 40h .雌成虫多产卵于新萌发叶片上 ,每一卵块含卵 3～ 1 2粒 .5月中旬至 9月上旬是幼虫危害期 .6月中旬开始化蛹 .6月下旬开始羽化 .试验证明 ,采用科学的营林技术措施 ,人工、化学防治相结合的综合治理措施 ,能有效控制北锯龟甲的危害 Basiprionotabisignata (Boheman), an important pest of paulownia, occurs one year per year in Xuanwei City, Yunnan Province. Adults are wintering under stones, bark joints, ground subsoil or topsoil. In early April, Adult mating spawning period, mating time 20 ~ 40h. Female adult spawning on the new sprouting leaves, each egg containing eggs 3 to 12. Mid May to early September is the larvae harm period. Began to pupate .New June beginning .Experiment proves that the use of scientific and technical measures of forest management, artificial, chemical control of a combination of comprehensive management measures, can effectively control the hazards of the North Sea Turtle shell