摘要
为科学防控钝鞘中脉叶蜂Mesoneura truncatatheca Wei,采用野外调查结合室内饲养的方法研究了钝鞘中脉叶蜂的寄主植物和生物学特性。结果显示:钝鞘中脉叶蜂的寄主植物依喜食次序为锐齿栎Quercus aliena var. acuteserrata、辽东栎Quercus liaotungensis、山榆Ulmus propinqua和铁橡树Quercus spinosa。钝鞘中脉叶蜂在小陇山林区1 a发生1代,主要以幼虫取食危害寄主叶片,幼虫共5龄,有互斥性,在树叶上呈均匀分布状态。以老熟幼虫结茧在树冠下枯枝落叶层内越夏越冬,各龄幼虫危害状有很明显区别,可作为发生期预测依据。成虫雌雄比为1. 4∶1,羽化前期主要是雄虫,雌成虫比例逐渐上升,到羽化后期只有雌虫出现。
Host plants and bionomics of Mesoneura truncatatheca Wei were studied through field investigation and indoor feeding.The results showed that according to preference,the order of host plants of M.truncatatheca was Quercus aliena var.Acuteserrata,Quercus liaotungensis,Ulmus propinqua and Quercus spinosa.M.truncatatheca had one generation a year in the forest region of Xiaolong-shan.The larva fed on leaves of host plants,and had five instars which evenly distributed on the leave.Mature larva oversummered and overwintered by cocooning in litter layer under the crown.Damages caused by each instar had obvious differences which could be used as a basis for prediction of occurrence period.The ratio of female to male was 1.4∶1.During early emergence period,most adults were male.With the increasing of the proportion of female adult,there’s only female in late emergence period.
作者
蔡继增
牟顺泰
刘玉荣
毛浩龙
CAI Jizeng(Xiaolongshan Forestry Pest Control and Quarantine Station of Gansu Province,Tianshui 741020,China)
出处
《中国森林病虫》
2018年第6期6-9,共4页
Forest Pest and Disease
关键词
钝鞘中脉叶蜂
寄主
生活史
行为
习性
Mesoneura truncatatheca Wei
host plant
life history
behaviour
habi