梨圆蚧Quadraspidiotusperniciosus（Comst－ock），又称梨笠圆蚧、梨跨圆蚧、梨枝圆蚧，是新疆近年来危害果树、果实的较为严重的害虫之一。寄主较多、危害较重、虽日渐蔓延严重，但尚未引起充分重视；为此，1994～1995年作者对该虫的分布、危害、发生规律、天敌昆虫及防治方 Quadraspidiotus perniciosus (Comst-ock), also known as Pear Scale, Pear Scale, Pear Scale, is one of the more serious pests in Xinjiang in recent years endangered fruit trees, fruits. More hosts, more serious harm, although the growing serious, but has not been given full attention; To this end, from 1994 to 1995 the author of the pest distribution, hazards, occurrence laws, natural enemies and control of insects