Sex Attractant for the Western Lawn Moth, Tehama bonifatella Hulst 12

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Abstract
A combination of ( Z )-11-hexadecenal and ( Z )-13-octadecenal is a sex attractant for male Tehama bonifatella Hulst (Lepidoptera: Pyralidae). Neither compound alone produced trap catch. Optimum ratios were from 1:1 to 7:3 (hexadecenal to octadecenal) in natural rubber septa., and optimum dosage was 0.45:0.30 to 4.5:3.0 mg of ( Z )-11-hexadecenal:( Z )-13-octadecenal. The strongest electroantennogram (EAG) response was evoked by ( Z )-9-tetradecenal followed by ( Z )-11-hexadecenal. Addition of ( Z )-9-tetradecenal or ( Z )-11-hexadecen-1-ol acetate to the two-component lure greatly decreased trap catch. Addition of other EAG active compounds to the two-component lure failed to increase trap catch. Traps baited with the two-component lure caught more males than traps baited with females.