薄壳山核桃瘤蚜(Phylloxera derastatrixPerg.)是危害薄壳山核桃最严重的害虫之一,受害植株率可达100%,严重的单株大多数叶片均有瘿瘤。由于瘤蚜的危害,常引起叶片枯黄、早落,叶芽不能正常抽梢放叶,严重影响其树木的生长、开花和果实产量。为了保护这一外来经济树种的生长与结实,近年来作者对该害虫进行了危害情况、生活习性、形态特征 Phylloxera derastatrixPerg. Is one of the most serious pests that endanger the shell pecan. The affected plants can reach 100%, and most of the leaves of the serious plant have nodules. As a result of the harm of the phylloxera, it often causes the leaves to turn yellowish and plumule, and the leaf buds can not be normalized and leafy, which seriously affects the growth, flowering and fruit yield of the tree. In order to protect the growth and robustness of this foreign economic tree species, in recent years, the author conducted a study on the damage, habits, morphological characteristics of the pests