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松突圆蚧是广东省近几年新发现的一种危害松树的害虫,分布在与香港、澳门毗邻的12个县、市,发生面积257万亩,其中142.9万亩已枯死或濒于枯死。据观察,松突圆蚧一年发生四代,世代重叠,同一时期均有各虫态出现。若虫和雌成虫固定在针叶基部吸食树液,多被叶鞘所覆盖,危害极隐蔽,扩散传播迅速。此虫是国内森林植物检疫对象之一。
Bursaphelenchus xylophilus is a pest newly found in Guangdong Province that has endangered pine trees in recent years. It is distributed in 12 counties and cities adjacent to Hong Kong and Macao. It has an area of 2.57 million mu, of which 1,429,000 mu have died or are dying. It has been observed that the occurrence of Cyanidopsis elegans four generations a year, overlapping generations, the same period all the insect states appear. Nymphs and female adults fixed in the needle base to take sap, mostly covered by leaf sheaths, endanger the very hidden, spread spread rapidly. This insect is one of the domestic forest plant quarantine objects.