BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) XVI. (Z)-5-DECENYL ACETATE A SEX ATTRACTANT FOR THREE CLOSELY RELATED SPECIES, EUXOA DECLARATA, EUXOA CAMPESTRIS, AND EUXOA ROCKBURNEI

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Abstract
The three closely related species of Euxoa cutworm moths comprising the declarata group gave identical male antennal responses to synthetic C10 to C18 alkenyl derivatives. An extract and a solution of the volatile emissions from E. campestris females when fractionated by gas chromatography yielded a single EAG-active fraction whose elution corresponded to a C10 acetate. The active component was assigned (Z)-5-decenyl acetate based on its mass spectrum and capillary GC retention time and the EAG responses of campestris males to isomeric decenyl acetates. Field trials demonstrated (Z)-5-decenyl acetate attracted males of all three species although it was not as attractive as live females. Attraction was suppressed by (Z)-5-dodecenyl actate, (Z)-7-dodecenyl alcohol, and (Z)-7-dodecenyl acetate.

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