(Z, E)-9, 12-tetradecadienyl acetate and (Z)-9-tetradecenyl acetate were identified chemically in sex pheromone gland extracts of female Spodoptera depravata (BUTLER). A laboratory wind-tunnel experiment showed that the former compound acts as an attractant-pheromone to the male but the latter compound has no pheromonal activity by itself or in combination with the former compound.