克里角梢小蠹生物学特性及防治

Bionomics and control of Trypophloeus klimeschi

克里角梢小蠹TrypophloeusklimeschiEggers为国内新记录种 ,近年来成为新疆杨 (PopulusalbawyPyramidalis)的重要害虫 ,在短期内可导致新疆杨死亡。该虫在新疆阿拉尔 1年发生 2代 ,主要以成虫在树干蛀盲孔越冬。危害部位集中于距地面高 40～ 2 0 0cm的主干。成虫出树活动 1年中有 3个高峰 ,即 :5月上旬至 5月中旬 ,7月下旬至 8月中旬 ,9月下旬。第 1代幼虫历期约为 3 0d。成虫出孔活动盛期是防治该害虫的关键时期。

Trypophloeus klimeschi Eggers is a new recorded species in China. It is highly dangerous to the stands of Xinjiang poplar, it can cause these trees to die in a short time. It has 2 generations in a year and overwinters as adult in Alar County, Xinjiang. It injures mainly the trunk of 40～200 cm high. Adults are exposed outside in three periods of time annually: the first ten days and the middle ten days of May, the last ten days of July and the middle days of August, and the last ten days of September. In natural condition, the larval stage lasts 30 days. The efficient method is to spray the trees with insecticides at the peak periods when the adults move outside the tunnels.