我们采用昆虫性信息素腺体漂洗结合色-质谱分析方法,从桑毛虫性信息素腺体中鉴定出四个戊酸十八碳烯酯.它们是异戊酸顺-7-十八碳烯酯(1a)(92％),异戊酸6-十八碳烯酯(1.4％),异戊酸9-十八碳烯酯(5％)和正戊酸6-十八碳烯酯(16％).大田诱蛾生测和触角电位试验证明1a有很强的生理活性,可用于桑毛虫的测报和防治试验.1a是新的性信息素结构,在毒蛾科中性信息素是异戊酸酯尚属首次发现. We identified four octadecenoic acid valerates from the moth pheromone gland using an insect pheromone-gland rinse combined with colorimetric analysis, which is cis-7-octadecyl isovalerate (92%), 6-octadecenyl isovalerate (1.4%), 9-octadecenyl isovalerate (5%) and 6-octadecenyl n-pentanoate %) .The field test and antennae test of moths showed 1a has a strong physiological activity, can be used for the detection and control of mulberry caterpillars.1a is a new sex pheromone structure, Acid ester is still the first discovery.