落叶松实小卷蛾 (Petrova perangustanaSnell.) 是落叶松球果的重要害虫之一。其幼虫蛀食正在发育中的球果,钻入鳞片内蛀成虫道,取食未成熟种子的胚乳,使球果内充满虫粪。受害鳞片变成枯黄色,球果弯曲变形,球果内未受害的种子也发育不良,严重影响种子的产量及质量。此虫在辽宁省东部落叶松林区普遍发生,为害情况详见表1。 One of the major pests of larch cones is Pestalotis larvae (Petrova perangustanaSnell.). The larvae eaten the developing cones, drilling into the scales borers into adult lanes, feeding the endosperm of immature seeds, making the cones full of insect excrement. The damaged scales become yellowish, the cones bend and deform, and the unswept seeds in the cones are also poorly developed, seriously affecting the yield and quality of the seeds. The insects in the eastern Liaoning Larch Forests generally occur, the details of the damage in Table 1.