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小窄径茧蜂 Agathis pumila Ratzeburg是欧洲落叶松鞘蛾 Coleophora laricella(Hübner)的专性内寄生蜂。最适发育温度为 1 5℃～ 2 5℃ ,最佳寄生时间是寄主幼虫的 1龄中后期和 2龄初期。 1 991～ 1 994年我们从美国和加拿大引进释放 ,防治兴安落叶松鞘蛾 C.dahurica Fikv。目前 ,小窄径茧蜂已在辽宁省大伙房实验林场定居 ,但数量较少 ,还没有达到控制住鞘蛾危害的程度。
Agathis pumila Ratzeburg is a obligate endoparasitoid of Coleophora laricella (Hübner). The optimum temperature for development was 15 ℃ ~ 25 ℃, and the best parasitic time was the first and second instar larvae of host larvae. From 1991 to 1994, we introduced and released from the United States and Canada to control C.dahurica Fikv. At present, the small narrow-bodied Braconian bee has settled in Dahuofang Experimental Forest Farm in Liaoning Province, but the quantity is small and it has not reached the level of controlling the harm of the coleoptile.