我县落叶松人工林自1973年遭受落叶松毛虫危害以来,曾发现一种喜马拉雅聚瘤姬蜂Cregopimpla himalayensis(Cameron)(《天敌昆虫图册》32页),能寄生落叶松毛虫、天幕毛虫、舞毒蛾、银波天社蛾幼虫。当7月中旬林间松毛虫密度大时,该蜂寄生率可达13.5％,8月上旬密度小时,寄生率为4％。被寄生的幼虫,到老 Larch plantation in our county since the detritus has been affected by the dendrolimus caterpillar, has been found in a Himalayan Polygalaceae wasp Cregopimpla himalayensis (Cameron) (“natural enemies atlas” 32 pages), can parasitic larch caterpillars, celestial caterpillars, Gypsy moth, silver wave God moth larvae. When mid-July dendrolimus density was high, the bee parasitism rate of up to 13.5% early August density, the parasitism rate of 4%. Parasitic larvae, to the old