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毛蚜属(Chaitophorus Koch)属同翅目(Homoptera)蚜科(Aphididae)。在我国北方为害杨树常见的有两种:即杨白毛蚜及杨花毛蚜。两种毛蚜群集枝条、嫩芽、嫩枝梢、叶柄、叶面吸食汁液。受害叶片较正常叶片干硬,并排出大量粘液,布满树枝和叶片,招致煤污病,引起早期落叶。随着煤污层的堆积,整个枝条下垂,对树木和幼苗生长危害很大。分布及寄主植物国内已知分布在河南、河北、山东、山西及京、津地区。为害毛白杨、大关杨、唐柳、河北杨等,尤以毛白杨受害最重。形态特征
The genus Chaitophorus Koch is a member of the family Homoptera Aphididae. There are two common types of poplar damage in northern China: Populus aurantii and Populus euphratica. Two kinds of hairy aphids cluster branches, shoots, shoots, petioles, foliar feeding juice. Injured leaves than the normal dry and hard leaves, and discharge a large number of mucus, covered with branches and leaves, leading to coal pollution, causing early deciduous. With the accumulation of coal fouling, the entire shoots are drooping and are detrimental to the growth of trees and seedlings. Distribution and host plants known to distribute in Henan, Hebei, Shandong, Shanxi and Beijing, Tianjin area. Poplar damage, mark Yang, Tang Liu, Hebei Yang, etc., especially Populus suffer the most. Morphological characteristics