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本文对杨十斑吉丁虫Melanophila decastigma Fabricius生物学进行了系统的研究,特别对幼虫越冬部位、化蛹及羽化习性、成虫习性、幼虫为害部位作了详细观察,提出幼虫开始进入木质部的时间为防治关键。发现一种啮小蜂Tetrastichussp.和轮枝镰刀菌Fusarium verticillioides球孢白僵菌Beauveria bassiana为重要天敌。两种真菌自然感病率分别为16.3％、12.8％,室内致病力测定感病率分别为79.3％、54.0％。
In this paper, we systematically studied the biology of Melanophila decastigma Fabricius, especially observed the larvae overwintering sites, pupation and eclosion habits, adult habits and larvae damage. The larvae started to enter the xylem for Prevention key. Tetrastichussp. And Fusarium verticillioides Beauveria bassiana were found to be important natural enemies. The natural susceptibilities of the two fungi were 16.3% and 12.8%, respectively. The prevalence of pathogenicity was 79.3% and 54.0% respectively.