蚜虫隶属半翅目蚜虫总科,是世界上分布最广的微小昆虫之一。世界已知4 700余种,中国分布约1 100种[1-2]。蚜虫种类多、繁殖快、世代重叠,还存在孤雌生殖与两性生殖世代交替等独特生物学现象。许多蚜虫种类是非常重要的农作物害虫,其刺吸式口器可吸食植物汁液,造成植物生长不良,其唾液也对植物有毒害作用[3-4]。受蚜虫为害的植物具有多种不同症状,如生长率降低、产生叶斑、泛黄、发 Aphids, belonging to the Division of Aphids, Hemiptera, is one of the most widely distributed tiny insects in the world. More than 4,700 species are known in the world and about 1,100 in China [1-2]. There are many kinds of aphids, multiply quickly and generations overlap. There are also unique biological phenomena such as parthenogenesis and alternation of generations. Many species of aphids are very important pests of crop plants. Their sucking mouthparts can ingest plant juice, resulting in poor plant growth and saliva poisoning of plants [3-4]. Plants affected by aphids have a variety of different symptoms, such as reduced growth rate, resulting in leaf spots, yellowing, hair