SEX-PHEROMONE OF STENOMA-CECROPIA MEYRICK (LEPIDOPTERA, ELACHISTIDAE)

(Z,E)-9,11-tetradecadienal (Z9,E11-14: Ald; 11%), (Z,E)-9,11,13-tetrad ecatrienal (Z9,E11, 13-14:Ald; 67%), (Z,E)-9,11-tetradecadienyl acetat e (Z9,E11-14:Ac, 5.5%), and (Z,E)-9,11, 13-tetradecatrienyl acetate (Z 9,E11,13-14:Ac; 16.5%) were identified in the extracts of female phero mone glands of Stenoma cecropia (Lepidoptera: Elachistidae). From elec troantennograms and single sensillum recordings, receptors to Z9,E 11, 13-14:Ald and Z9,E11-14:Ald were found on male antenna. Behavioral dat a were obtained from olfactometric tests in the laboratory and field t rapping experiments in Colombia. It appeared that a blend of Z9,E11,13 -14:Ald (83%) and Z9,E11-14:Ald (17%) was attractive to males. These a ldehydes are assumed to be components of the sex pheromone of S. cecro pia, whereas the acetates found in gland extracts might be precursors of the pheromone.