摘要
双条杉天牛是柏类树种的重要害虫之一。该虫在安徽1a发生1代,以成虫在树枝干蛹室内蛰伏越冬。翌年2月中旬后,越冬成虫陆续咬破树皮爬出羽化孔相继交尾、产卵。3月中、下旬为幼虫孵化盛期,幼虫于9月中旬后化蛹,9月下旬至10月上、中旬成虫陆续羽化,就此蛰伏越冬,该虫不需补充营养,可多次交尾,平均每雌产卵(68.84±32.75)粒,幼虫在寄主皮下取食韧皮部及边材,从而切断寄主输导组织,引起死亡。
The investigation on the biological characters of Semanotus bifasciatus showed that the pest completes its life cycle in one year in Anhui area. The imago overwinter in stems and starts to come out of the emergence holes by bitting the bark in the mid and late February of the next year.The largest hatching rate appear in late March,and the larva begin to pupate after the middle September.In the late September to the early or mid October,the pupa begin to emerge, then the imago hide in the trunks to over winter. When the imago come out of the emergence holes, they eat nothing and mate repeatedly.Each mated female can lay (6884±3175) eggs. Semanotus bifasciatus damges trees in its larval stage. The pupa hide in the subcutis of the host plant and damage the transport nutrient by eating the phloem. This is the reason why the invaded plants die.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2003年第1期57-60,共4页
Journal of Anhui Agricultural University
关键词
双条杉天牛
生物学特性
柏类树木害虫
形态特征
Semanotus bifasciatus
cypressaceae plants
biological characteristics
forest pest
