蚜虫是浙江桔区的四大主要害虫之一。蚜虫以柑桔嫩梢、嫩叶、花蕾和花的汁液为食,造成叶片卷曲、新梢枯死、落花落果,并诱发煤烟病,严重影响柑桔产最和品质。近年来,柑桔蚜虫的为害有加重的趋势。过去一般认为柑桔上比较重要的蚜虫种类是桔蚜和桔二叉蚜,现在各地普遍注意到蚜虫优势种类已发生演变(刘斯军等,1988;曾鑫年等,1988)。杭州地区蚜虫发生情况如何,尚未见报道,对其发生规律也 Aphids are one of the four major pests in the Orange Zone in Zhejiang Province. Aphids to citrus tender shoots, young leaves, flower buds and flowers for food, resulting in curly leaves, shoots die, drop flowers, and induce sooty tobacco, seriously affecting the quality and most citrus. In recent years, citrus aphids have a worsening trend. It is generally believed that the more important species of aphids on citrus are the orange aphid and the orange aphid. It is now widely observed that the predominant species of aphids have evolved (Liu et al., 1988; Zeng Xinnian et al., 1988). Hangzhou aphids how the situation has not been reported, its occurrence also