杨干象甲(Cryptorhynchus lapathi L)又叫杨干象鼻虫、杨干白尾象甲,属鞘翅目象甲科。一、分布与危害杨干象甲在国内主要分布在东北地区。据文献记载朝鲜、苏联、日本等地区也有分布。杨干象甲是杨树的主要蛀干害虫之一,危害树种主要有小叶杨、小青杨、加拿大杨和美×青等其它品种杨树。早在60年代初奈曼旗就发现了这种害虫,据桥河母树林场 Cryptorhynchus lapathi L (Cryptorhynchus lapathi L), also known as Yang dry Weevil, Yang dry white tail beetle, Coleoptera is a family of subjects. First, the distribution and harm Yang cadre in the country mainly in the northeast region. According to the literature, North Korea, the Soviet Union, Japan and other regions are also distributed. Young stems and crabs are one of the main stem borers of poplar, and the harms of the tree species include Populus simonii, Populus simonii, poplar and other poplar trees such as Poplar and Poplar. As early as the early 60’s Naiman flag found this pest, according to Qiahe mother tree forest