A Sex Attractant for the Spruce Seed Moth, Cydia Strobilella (L.), and the Effect of Lure Dosage and Trap Height on Capture of Male Moths

Electroantennogram (EAG) responses from male Cydia strobilella (L.) indicated that (E)-8-dodecenyl acetate (E8-12:Ac) was the most stimulating of the dodecenyl and tetradecenyl compounds assayed. Field-screening tests, which included compounds previously reported as attractive, demonstrated that only E8-12:Ac was effective. The optimum trap dosage was 0.3–3 μg on red rubber septa. Catches of males were greater when traps were hung in the upper crown of either white spruce or black spruce.