THE DEVELOPMENT OF A SEX-PHEROMONE LURE FOR THE AMERICAN PLUM BORER, EUZOPHERA-SEMIFUNERALIS (LEPIDOPTERA, PYRALIDAE), A MAJOR PEST OF CHERRY IN MICHIGAN

Pheromone components of the American plum borer, Euzophera semifuneral is, were defined by use of the electroantennogram screening technique and capillary gas chromatographic retention times of sex pheromone gla nd constituents. Field studies showed that greatest attraction was ach ieved with a 1 mg load rate of a 4-component blend in a rubber septum. This blend consisted of a 2:1 ratio of Z,E-9, 12-14:ALD and Z9-14:ALD and an equal amount of the corresponding alcohols in a 2:1 ratio, res pectively. Commercial lures were used to compare the flight patterns o f the American plum borer, peachtree borer (Synanthedon exitiosa), and lesser peachtree borer (Synanthedon pictipes) adults in Michigan in 1 988.