中文摘要：

对采集到的常见蚜、蚧昆虫标本进行识别特征观察.结果表明：蚜虫各科间可根据触角上的感觉圈个数及形状、尾片的形状、腹管形状及有无网纹、体表突起物等特征进行比较.蚧虫各科可从腹部末端特征、体表有无气门、是否形成蚧壳等方面进行比较.不同科属的蚜、蚧可能在不同植物体表的危害特点相似或在同种植物的同一部位同时为害;同一种昆虫在同一性别中有有翅型和无翅型的区别,不同性别间有性二型;不同龄期的蚜蚧若虫有形态差异.

英文摘要：

The identifying characteristics of common aphid and kuwana collected from Tianjin were observed. The results showed that aphids of different families can be identified according to the number and shape of the antenna sensing ring, the shape of the tail piece, the shape of ventral tube and whether there was overlapping curve and surface protrusions. Scale insects of different families can be identified according to the character of the abdomen end, whether there were body surface valves, or whether there was shell come into being. Aphids and scale insects of different families and genera may cause similar damage in different plant surface or cause damage simultaneously at the same place of the same plant. Differences like the wing type and wingless type existed among the same kind of insects of the same gender. There were gender two types between different genders. Nymphae of aphids and scale insects would change appearance in different growth stages.