天牛大多为树木害虫,它对桑、茶、果树等經济植物以及行道树、观賞树的为害是相当严重的,分布的地区也此較广泛。近年来,浙江蚕桑区由于遭受桑褐天牛、黄星天牛等的为害,造成树势衰弱、桑叶減产的现象有所增长,有的桑区甚至发生点片死亡。其他树木凡是經营管理不善,忽視防治工作的,也都有不同程度的損失。 Most of the beetles are pests of trees, which damage the economic plants such as mulberry, tea and fruit trees as well as the damages caused by trees and ornamental trees. The distribution areas are also quite extensive. In recent years, due to the suffering of the mulberry caterpillars and the yellow star cows in Zhejiang’s mulberry area, the decline of the mulberry trees and the decrease of the mulberry leaves have increased, and some mulberry fields have even died. All other trees are poor management, neglect prevention and control work, but also have varying degrees of loss.