Sex pheromone of the apple leafminer moth, Phyllonorycter ringoniella (Matsumura) (Lepidoptera: Gracillariidae): Activity of geometrical isomers of tetradecadienyl acetates

All geometrical isomers of (3, 10)-, (4, 10)-, (5, 10)- and (6, 10)-tetradecadienyl acetates were synthesized as candidate compounds of the apple leafminer moth's pheromone component. The activities of combinations of 16 dienes with 2 monoenes were tested under field conditions. The combination of (Z)-10-tetradecenyl acetate and E4, Z10-tetradecadienyl acetate was as active as virgin females and it is strongly suggested that the the sex pheromone of the apple leafminer moth is this mixture. (E)-10-Tetradecenyl acetate and the other 2 isomers of E4, Z10-tetradecadienyl acetate showed weak activity.