摘要
黄脉天蛾 Amorpha amurensis Staudinger,在太谷地区是杨、柳树的重要食叶性害虫,品种之间发生轻重有明显的差异。近年来为害日趋严重。作者对其形态、生活史及习性作了系统观察研究,并绘制了各虫态及为害状原图,提出了防治措施。在太谷地区一年发生2代,以蛹在土中越冬。越冬代成虫发生期为4月中旬至6月中旬。第一代卵期9—12天,幼虫期37—42天,蛹期10—15天,第一代成虫发生期为6月下旬至8月中旬。第二代卵期7—8天,幼虫期27—30天。成虫寿命一般5—7天,成虫昼伏夜出,有趋光性。幼虫共5龄,对各龄的头宽与体长作了测定。
The sphingid Amorpha amurensis Staudinger is a common pest on poplar and willow trees.Its damage differs in varieties of the host trees,but becomes more serious in recent years. The bionomics,life history and morphology of the pest were studied and some control measures were suggested. In Taigu area of Shanxi provence,the pest has two generations each year and its pupae overwinter.The adult of the overwintering generation appears from mid April to mid June.The stages of egg,larya and pupa of the first generation last for 9—12,37—42 and 10—15 days,respectively.The edult of the first generation emerges in the period of late June to mid August.The egg stage of the second generation lasts for 7—8 days,and the larva stage lasts for about a month.The adult lives for 5—7 days and scatters the eggs on the leaves of the host trees.
