摘要
国内外首次发现泰加亚孔蛾Subclemensia taigae Kozlov, 1987危害白桦Betula platyphylla和棘皮桦Betula dahurica。采用室内饲养和野外定点观察,结合灯诱、色板引诱等方法对其生物学特性进行研究。结果表明:该虫在河北宽城1 a发生1代,在越冬虫鞘内以蛹于下层枯枝落叶层中越冬;翌年5月下旬成虫陆续羽化,到6月中旬结束,成虫期到6月底;5月底可见幼虫潜叶危害,8月中旬幼虫切下潜斑构筑潜斑虫鞘,陆续切叶危害,吐丝粘连切下的叶边缘形成切叶虫鞘,并陆续坠地爬行到越冬场所,在虫鞘内继续取食内壁叶肉,9月下旬幼虫切除虫鞘边缘,构筑越冬虫鞘,在其内陆续化蛹越冬;幼虫期有蜂类寄生天敌5种;成虫有趋光性,对绿色和黄色有强趋向性,可用来进行成虫监测。
It was for the first time reported that Subclemensia taigae Kozlov,1987 larvae damaged Betula platyphylla and Betula dahurica at home and abroad.Its biological characteristics were studied by indoor feeding and field fixed-point observation,combined with light trap and color attraction.The results showed that S.taigae had one generation a year in Kuancheng county,Hebei province,and overwintered as pupae in overwintering sheath in litter layer under the trees.Adults emerged successively in late May of the following year,eclosion ended in mid-June,and adult period ended at the end of June.The leaf-mining damage of larvae was found at the end of May.In mid August,the larvae cut the latent spots to build a leaf miner sheath.Later,the damage on the leaves continued in way of cutting leaves,edges of the leaves cutted formed a leaf cutter sheath by spinning and sticking,crawled to overwintering place one after another,and continued to eat the mesophyll of sheath.In late September,the larvae cut off the edge of the sheath,constructed overwintering sheath,and successively pupated and overwintered in the overwintering sheath.Adults had phototaxis and had strong tendency to green and yellow,which could be used for adult monitoring.There were five species of parasitic natural enemies wasps during larval stage of S.taigae.
作者
张海新
乔新兴
刘洛余
赵小宇
孙力楠
娄超
ZHANG Haixin;QIAO Xinxing;LIU Luoyu;ZHAO Xiaoyu;SUN Linan;LOU Chao(Kuancheng Manchu Autonomous County Forestry and Grassland Bureau,Kuancheng 067600,China;Forestry and Grassland Bureau of Chengde City,Chengde 067000,China)
出处
《中国森林病虫》
2023年第4期22-26,共5页
Forest Pest and Disease
关键词
泰加亚孔蛾
生物学特性
白桦
棘皮桦
Subclemensia taigae Kozlov,1987
biological characteristics
Betula platyphylla
Betula dahurica
