摘要
榆举肢透翅蛾主要为害榆树,已知分布陕西、宁夏,两年1代,以幼虫在坑道内越冬。老熟幼虫于6月下旬开始化蛹,7月中旬成虫出现,7月底至8月上旬达盛期,初孵幼虫于7月下旬始见,10月下旬幼虫进入越冬,成虫白天羽化,交尾,产卵。卵单粒散产,卵期13—19天。成虫寿命1—8天,雌虫平均3.3—4.4天,雄虫平均2.3—3天,雌雄性比1∶0.77—1。
The Heliodiniesesia ulmi Yang et wang feeds on ulmi spp.as larvae in Shaanxi,Ningxia ect,It occurs one generation per two years.The winter is passed as larvae in the truck.The adult begin emerging from mid-July.The larvae bogin emerging out of late-July,It begin to overwinter in lastoct. The adult moving,mating and egglaying at day-times,It live only for 1 to 8 day.
出处
《陕西林业科技》
北大核心
1989年第1期37-40,共4页
Shaanxi Forest Science and Technology
