none Enter noneEmail20150308 (yannisxu@gmail.com) The behavioral responses of female Agrypon flexorius to volatile compounds emitted by different larve and frass were studied with a Y - tube olfactometer. Compared with blank contrast group, females Agrypon flexorius were attracted to the volatiles from its lavar and frass, and other females were not. When each two of different lavare or frass were combined, the attraction of A. flexorius to different larvar or frass were incoherence; Providing different larvars, A. flexorius only laid eggs on Loxostege sticticalis