金龟(虫甲)属鞘翅目,金龟子科。成虫食害林木、果树的芽、叶、花和幼果,幼虫——蛴螬为害幼苗根茎,是苗圃的主要地下害虫。西农苗圃培育的毛白杨、泡桐、水杉、苹果等幼苗,多年来受害严重。调查发现,往往在发生地块内,株株苗下都有蛴螬,虫口密度很大,常常形成受害的“蛴螬岛”。发现一株泡桐苗根部有蛴螬17头,毛白杨苗根 Beetle (insect) is a Coleoptera, beetle Branch. Adults eat trees, fruit trees buds, leaves, flowers and young fruit, larvae - slugs damage seedlings rhizomes, nursery is the main underground pests. Seedlings of Populus tomentosa, paulownia, Metasequoia, apple and so on nurtured by XNN nurseries have suffered serious injuries over the years. The survey found that often occurred in the plot, the plant strains are Miao Miao, insect density is very large, often form the victim of “Mian 螬 Island.” Find a Paulownia seedling root has 17 pieces of hairy, white poplar root