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落叶松种子小蜂(Eurytoma Laricis Ya-no),属膜翅目广肩小蜂科。该虫是落叶松种子的主要害虫之一,也是国内检疫对象,该虫在大兴安岭地区普遍发生,黑龙江、内蒙、吉林、山西等地也有分布。为控制其进一步传播蔓延,我们在大兴安岭地区对其生物学特性、发生规律及防治方法进行了研究。一、危害情况种子小蜂以幼虫为害落叶松的种子。危害的树种有兴安落叶松、日本落叶松和华北落叶松。被害种子从外表看不出被害症状,老熟幼虫在种子内越冬、滞育,有的可滞育二年之久,并能借助种子运输作远距离传播。1979—1981年,我们在松岭、塔河、甘河、阿里河、克一河等5个林业局对种子小蜂
Eurytoma Laricis Ya-no, a Hymenoptera. The insects are one of the main pests of larch seeds and are also the quarantine objects in China. The insects are common in Daxinganling area. Heilongjiang, Inner Mongolia, Jilin and Shanxi are also distributed. In order to control its further spread, we studied its biological characteristics, occurrence rules and control methods in Daxinganling area. First, the damage situation Seed larvae larvae larvae seeds. Harm tree species are Luan Larch, Japanese larch and Larix principis-rupprechtii. Victims of the seeds can not see the symptoms of the victim from the outside, mature larvae in the winter, diapause, and some can diapause for two years, and can use seed transport for long-distance transmission. 1979-1981, we Songling, Tahe, Gan River, Ali River, a river and other five Forestry Bureau on the seeds of small bee