蚧壳虫是为害柑桔的一种重要害虫,种类很多,为害较严重的有矢尖蚧、黑点蚧、糠片蚧和红蜡蚧。尤其是矢尖蚧,自七十年代以来,已陆续在我国14个省(区)柑桔产地成灾。据四川省1987年统计有70%桔园发生,虫株率约占50%。据湖南柑桔主产区邵阳市1986～1987年统计,每年有20%的结果桔园发生蚧 Scale insects is an important pest damage citrus, many types of damage more serious arrowhead scale, black spot scale, bran patch and red wax scale. In particular, Agrimony scales, since the seventies, have been in China’s 14 provinces (autonomous regions) citrus origin disaster. According to the statistics of Sichuan Province in 1987, 70% of the orange orchards occurred, with about 50% of insect strains. According to the main producing areas of Hunan citrus Shaoyang City from 1986 to 1987 statistics, annual results of 20%