落叶松叶蜂在秦岭山地的生物学特性  

Biology of Larch Sawfly in Qinling Mauntains

作　　者：吴定坤[1] 刘朝斌[1] 蒋西农 李孟楼[2] 

机构地区：[1]西北林学院火地塘教学实验林场,陕西宁陕711600 [2]西北林学院森林资源保护系,陕西杨陵712100

出　　处：《西北林学院学报》1992年第4期77-82,共6页Journal of Northwest Forestry University

摘　　要：落叶松叶蜂在秦岭山地林区1年发生1代,6月中旬后以老熟幼虫结茧越冬,翌年4月下旬化蛹,5月上旬成虫羽化,5月下旬卵孵化,幼虫5龄。雌雄性比19.7:1,5％的个体2年1代。其发生期比山西、辽宁等地早1个月。Describes the life history of Pristiphora erichsonii ( Hartig ) in Qinling mountains. It breeds one generation a year ( 5 % every other year ) and begins to cocoon to overwinter in the litter layer in mid June.The larvae pupate in late April of the next year. The adults emerge in early may and the eggs hatch in late May. There are five instars in larva stage. Ratio of female to male is 19.7 : 1 .The outbreak in Qinling mountains is one month earlier than in Shanxi , and Liaoning.

关 键 词：落叶松叶蜂 生物学 秦岭 

分 类 号：S763.430.1[农业科学—森林保护学]