我们在应用赤眼蜂防治松毛虫的推广工作中,于1975年第一代松毛虫蛹期,从林间采集到一种松毛虫蛹期寄生峰——大腿峰(Brachymerqa SP)。通过松毛虫和柞蚕蛹(茧)接种,发现都能产卵繁殖后代。在林间初步试用,可提高寄生效果40.5%。为了利用蛹期天敌、对该蜂进行了一些观察、繁殖利用试验。现将其结果整理初报如下: In the promotion of the application of Trichogramma dendrolimi in the promotion of pine caterpillars, we collected a pupae parasitic peak-thigh peak (Brachymerqa SP) from the forest in the first generation of pine caterpillars in 1975. Inoculation through the pine caterpillars and tussah pupae (cocoon) found that oviposition breeding offspring. Preliminary trial in the forest can increase the parasitic effect of 40.5%. In order to make use of natural enemies at pupal stage, some observations were made on the bee and the breeding and utilization tests were conducted. The results of the first report is as follows: