可克达拉市白蜡树蛀干害虫发生为害情况调查

Investigation of the occurrence and damage of ash tree borers in Kekedala city

白蜡树是可克达拉市园林绿化主要树种之一,在行道树中具有较高的占比,但近年来饱受蛀干害虫的不断侵扰。为明确可克达拉市白蜡树蛀干害虫为害情况,对白蜡树蛀干害虫进行了调查研究。经过调查共发现4种蛀干害虫,分别是小线角木蠹蛾Streltzoviella insularis(Staudinger)、白蜡窄吉丁Agrilus planipennis Fairmaire、咖啡脊虎天牛Xylotrechus grayii White和白蜡外齿茎蜂Stenocephus fraxini Wei。其中小线角木蠹蛾、白蜡外齿茎蜂和咖啡脊虎天牛均是新疆新记录种。白蜡窄吉丁和小线角木蠹蛾发生相对普遍且为害严重;白蜡外齿茎蜂在多数白蜡树都有观察到,主要为害上部枝梢;咖啡脊虎天牛仅在2株白蜡树上发现。

Ash tree is one of the main tree species for landscaping in Kekedala city and accounts for a relatively high proportion of street trees. However, it has been constantly infested by xylophagous insects in recent years. In order to determine the damage of the xylophagous insects of ash tree in Kekedala city, the xylophagous insects on ash tree were investigated. The results showed that there were four xylophagous insects, including Streltzoviella insularis(Staudinger), Agrilus planipennis Fairmaire, Xylotrechus grayii White and Stenocephus fraxini Wei. Among them, S.insularis, X.grayii and S.fraxini were the newly recorded species in Xinjiang. A.planipennis and S.insularis were relatively common and seriously damaged ash trees. S.fraxini mainly damaged upper branches of many ash trees. X.grayii was only found on two ash trees.