松皮小卷蛾(Laspeyresia grunertiana Ratzeb.)是为害落叶松树干的重要害虫。在国外分布于欧洲,国内分布于东北及山西。在辽宁东部山区的落叶松用材林和采种母树林及种子园中都有不同程度的发生,尤以种子园受害最重。据1981年调查,新宾县朝阳林场落叶松种子园中的日本落叶松被害率几乎达100%,而附近的种子林仅为11—16%,用材林则仅在林缘处极个别的植株被害。松皮小卷蛾幼虫在树干皮层及形成层处为害,蛀食成不规则坑道,破坏输导组织,同时造成流脂,消耗养分。如虫口较大,而又连年 Laspeyresia grunertiana Ratzeb. Is an important pest that damages larch trunk. In foreign distribution in Europe, the domestic distribution in the northeast and Shanxi. In eastern Liaoning mountain larch timber forests and seed-planting mother plantations and seed gardens have varying degrees of occurrence, especially in the heaviest damage to the seed orchard. According to a survey in 1981, the rate of Japanese larch in the larch seed orchard in Chaoyang Forestry Center, Xinbin County, was almost 100%, while the number of seed forests in the vicinity was only 11-16%. Only a few individual plants were harvested in the timber forest . Larvae moth larvae in the cortex and the formation layer of layer damage, eaten into irregular tunnels, destruction of the guiding tissue, while causing the flow of fat, nutrient consumption. Such as insects larger, but after another