Pine Caterpillars are the most important pests in the western Liaoning province, there are three populations currently in the forest, they are: Dendrolimus spectabilis Butler, D . Tabulaeformis Taiet Liu and D . superans Butler.

• 松毛虫是辽宁西部地区松林中的主要害虫；3个种并存于林内；即:赤松毛虫(Dendrolimus spectabilis Butler)、油松毛虫(D.；tabulaeformis Tai et Liu)、落叶松毛虫(D