Abstract: In order to find an efficient and pollutionfree method to control the Apocheima cinerarius Erschoff, a polyphagous defoliator pest, the sex pheromone was extracted from sex pheromone glands of virgin female moth of A. cinerarius by n-hexane, the sensitive reaction of male moth antenna to the hexane extracts from sex pheromone glands of virgin female moth was analyzed by GC-EAD, and the components of the pheromone were identified by GC-MS. The GC-EAD results indicated that male moth antenna was detected to have sensitive reaction to one component in the extracts. Based on GC-MS data of authentic standards, an unsaturated acetate with 14 carbons was identified as the active component of sex pheromone, but the position of double bond should be further identified through synthesizing more standard compounds. The results will provide the direction in screening tests of synthetic pheromone candidates and establish the foundation for determining the sex pheromone structure of female A. cinerarius.

Key words: Apocheima cinerarius, gland extract, sex pheromone, component identification, GC-EAD