Identification of a four-component sex pheromone of the female oriental fruit moth, Grapholitha molesta (Lepidoptera: Tortricidae)

The female-emitted pheromone of Grapholitha molesta (Busck), the Oriental fruit moth, was collected by holding females in glass flasks during calling. Flask washes were found to contain four pheromone components: (Z)-8-dodecenyl acetate and (E)-8-dodecenyl acetate in a 100:7 ratio, and (Z)-8-dodecen-1-ol and dodecanol in a 100:20 ratio. The ratio of (Z)-8-acetate to (Z)-8-dodecen-1-ol was approx. 100:30. Approximately 0.1-0.2 ng of pheromone was recovered per female per hour of calling.