概述

又称梨盾圆蚧.同A翅目 盾蚧科（Ｄｉａｓｐｉｄｉｄａｅ）昆虫.雌 成虫体长约１５ｍ，略B呈扁圆形，鲜黄色，由特殊腺体分泌的蜡质 介壳覆盖于虫体，介壳灰色或深灰，圆形，直径约２ｍ，中央隆起.触角及足退化.雄成虫长约０６ｍ，橙黄色，有１对污白色半透明的B翅.雄性的老熟介壳较雌虫介壳小，长椭圆形.雌雄成虫交配后，卵在雌体内孵化，初龄 若虫很小，淡黄色，触角及 口器发达，爬行在枝条或果实上选择适宜场所，将口器插入组织内吸取养分，并分泌白色蜡壳.蜕一次皮后，足、复眼及触角退化，出现雌、雄的形态分化.梨圆蚧的寄主植物广泛，已知在３００种以上.为世界性的大害虫.在果树方面主要为害苹果及梨，其次为樱桃、海棠、桃、杏等.在中国仅北部果区的局部果园为害严重. Also known as the Pear Shield Quadraspidiotus. With A Homoptera Diaspididae (Diaspididae) insects. Female adult body length of about 15m, a little B Chengbian round, bright yellow wax secreted by special glands shell covered in parasites, shell gray or dark gray, round, diameter of about 2m, the central uplift. tentacles and foot degradation. male adult length of about 06m, orange and yellow, there is 1 on the pollution of the B white translucent wings. male than female older mature shell shell small, long oval. male and female adults, after mating, the eggs hatch in the female body, early instar nymph is very small, light yellow, antennae and mouthparts developed, crawling in the branches or the fruit to choose suitable sites within the organization learn from the mouthparts into nutrient , and secrete a white wax shell. shed a skin, the feet, compound eyes and antennae degradation, there male and female of the morphological differentiation. pear Quadraspidiotus a wide range of host plants are known to more than 300. for the world's major pests. In the Fruit damage is done mainly apples and pears, followed by cherry, crabapple, peach, apricot and so on. In China the local area just north of fruit orchards of serious harm.