柑橘爆皮虫危害特征研究

Study on the damage symptoms of citrus borer

利用Sony DSC-S85数码照相机和LeicaMZ 16A研究型体视解剖镜(配Leica IM 1000软件系统)进行观察、拍摄和测量,首次以详实的图片资料系统地描述了柑橘爆皮虫(Agrilus auriventrisSaunders)的危害特征。将幼虫危害特征归为幼虫的蛀食、流胶、爆皮和树体死亡;成虫危害特征主要是羽化孔、叶片缺刻等几类症状。将流胶症状分为泡沫状流胶和点状流胶2类;爆皮症状分为小爆皮和大爆皮2类。小爆皮是一个初次被报道的症状,该症状是识别柑橘爆皮虫前期危害的关键特征。

Damage symptoms caused by citrus borer, Agrilus auriventris Saunders, were described and photographed in details for the first time. Pictures were taken by Sony DSC-S85 digital camera and Leica MZ 16A stereo microscope with Leica IM 1000 system. The damage symptoms caused by larvae were categorized into several groups： boring symptoms, gummosis, bark cracking, and tree dying process; those caused by adults mainly were emergence holes and damaged foliages. Two kinds of gummosis symptoms were differentiated from each other bubble-shaped gummosis and dot-shaped gummosis. And the bark cracking symptoms were defined as the small bark cracking symptom and the large bark cracking symptom. The small bark cracking symptom was reported for the first time. It is the key symptom for the distinguish of early stage of harmed trees due to citrus borer.