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落叶松叶蜂Ｐｒｉｓｔｉｐｈｏｒａｅｒｉｃｈｓｏｎｉｉ（Ｈａｒｔｉｇ）在北京地区１ａ一代，以老熟幼虫在树冠下及周围的枯枝落叶层及松软的土壤中结茧，以预蛹越冬。幼虫群集危害落叶松。卵和幼虫的有效积温分别为１１０．４５８６和３８３．５２５８日度。幼虫发育的最适温度为１６～２０℃。林缘及东南方向比林内及西北方向产卵多，分别为０．７３、０．３块／枝。茧期各种天敌的总寄生率为８３．２３％。以白僵菌、苏云金杆菌、昆虫寄生线虫及敌灭灵进行防治途径研究，结果表明，利用线虫防治室内效果达８０％～１００％，敌灭灵野外效果达９８％～１００％，而白僵菌效果为２８％～５２％，苏云金杆菌的２个亚种效果均不理想，分别为２０．８３％和９．０９５％。
Pristiphoraerichsonii (Hartig), a larva of the larvae of the larvae, was born in Beijing for a generation of larvae, cocooned with larvae of mature larvae in the litter of litter and in the surrounding litter and soft soil to pre-pupate overwintering. Larvae cluster harmful to larch. The effective accumulated temperature of eggs and larvae was 110.4586 and 383.5258 days, respectively. The optimum larval development temperature is 16 ~ 20 ℃. Forest edge and the southeast direction than the forest and northwest spawning more, respectively, 0.73,0.3 blocks / branch. The total parasitism rate of various natural enemies in cocoon period was 83.23%. With Beauveria bassiana, Bacillus thuringiensis, insect parasitic nematodes and enemy exterminates the way of prevention and treatment, the results show that the use of nematode control indoor effect of 80% to 100%, the enemy exterminate the effect of 98% to 100%, and white stiff The effect of bacterium was 28% ~ 52%. The two subspecies of Bacillus thuringiensis were not effective, which were 20.83% and 9.095% respectively.