沈阳地区红头阿扁叶蜂的研究初报

Acantholyda erythrocephala\%, a kind of destructire insect, is found recently in Shenyang, China. Its host tree is \%Pinus\% spp. especially \%Pinus tabulaeformis\% and \%P.densiflora\%. The injured branch, tip will be withered or even died. The harmful period of the larvae is about one month. There is one generation during a year in Shenyang area. Winter is passed as prepupae by making earth cells in the soil at the depth of 0～10cm. It can be controlled by many ways:set up closed forest; making conopy density be more than 0.7; digging out the forest soil in autumm, winter or early spring; cutting the larval nests and burning up; spraying 10% pyrethrum at 8000x ditution to the early instar larvae.

红头阿扁叶蜂的重要天敌——厚角跃姬蜂

报道在辽宁海城地区寄生红头阿扁叶蜂Acantholyda erythrocephala (Linnaeus) 的姬蜂科1中国新记录属、新记录种:厚角跃姬蜂Xenoschesis crassicornis Uchida, 1928。

红头阿扁叶蜂生物学特性及防治试验

红头阿扁叶蜂在海城1 a发生1代,以预蛹在土壤中越冬。翌年4月上旬化蛹。4月中旬成虫开始羽化,5月上旬幼虫孵化,6月中旬下树入土。发现红头阿扁叶蜂天敌16种,其中厚角跃姬蜂Xenoschesis crassicornisUchida为中国新纪录属、种。利用4种无公害农药对红头阿扁叶蜂3龄幼虫进行防治试验,效果达97%以上。进行了小卷蛾斯氏线虫Steinernema carpocapsaeWeiser室内侵染预蛹试验,7 d后预蛹全部死亡。

红头阿扁叶蜂蛹、卵发育起点温度和有效积温的研究

文章测定了红头阿扁叶蜂蛹和卵在182、02、22、4和26℃5个温度下的发育历期,应用直线回归法和直接最优法计算发育起点温度和有效积温,并用变异系数进行检验。结果表明两种方法得出的结果差距不大,蛹的发育起点温度和有效积温分别为6.75℃和133.24 d.℃,卵的发育起点温度和有效积温分别为8.32℃和185.65 d.℃。

厚角跃姬蜂生物学特性研究初报

厚角跃姬蜂为红头阿扁叶蜂的内寄生蜂,在辽宁省海城市1 a发生1代,以老熟幼虫作茧在土中越冬,翌年4月下旬开始化蛹,5月上旬为化蛹盛期,中旬成虫开始羽化,下旬为产卵期,产卵期可延续到6月上旬,10月上旬钻出寄主体,做茧在土中越冬。