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分月扇舟蛾ＣｌｏｓｔｅｒａａｎａｓｔｏｍｏｓｉｓＬｉｎｎ．是危害杨树的重要害虫之一．为了做好防治该虫的基础工作，首先对雌蛾求偶特性及雄蛾风洞行为进行了观察，然后采用毛细管气相色谱及ＧＣ－ＭＳ分析对雌蛾性信息素进行了研究．结果表明：在光周期Ｌ∶Ｄ＝１４∶１０的条件下，黑暗８ｈ的性信息素抽提物已具有引诱活性，雌蛾求偶在黑暗９ｈ达高峰，求偶率高达９０％；雄蛾风洞行为反应以２日龄的反应较强；比较黑暗６～９ｈ雌蛾性信息素腺体的正已烷抽提液的气相色谱图，从色谱峰的消长并综合考虑风洞试验及求偶规律，确定了活性峰；微量化学反应及ＧＣ－ＭＳ分析结果表明，分月扇舟蛾性信息素活性组分为含有两个双键的Ｃ１４醛．
ClosteraanastomosisLinn. It is one of the important pests that endanger poplar. In order to do a good job in the basic work of controlling the insect, firstly, the characteristics of the mating of female moths and the behavior of male moths were observed. Then sex pheromone of female moths was studied by capillary gas chromatography and GC-MS. The results showed that the sex pheromone extract with the darkness of 8h had an attractant activity at the L = D = 14:10 photoperiod. The female moths reached the peak at 9h of darkness and the odds ratio reached as high as 90% Behavioral response to 2-day-old response stronger; 6 ~ 9h dark sex pheromone gland n-hexane extract gas chromatogram, from the peak rise and decline and comprehensive consideration of wind tunnel test and courtship, The activity peak was confirmed. The results of micro-chemical reaction and GC-MS analysis showed that the active component of sex pheromone was C. albicans containing two double bonds.