SEX ATTRACTANTS FOR TWO SPECIES OF WESTERN SPRUCE BUDWORM, CHORISTONEURA BIENNIS AND C. VIRIDIS (LEPIDOPTERA: TORTRICIDAE)

Abstract
Field trials were conducted in British Columbia and Oregon in 1972, which demonstrated that trans-11-tetradecenal, a sex attractant for male Choristoneura fumiferana and C. occidentalis, is also a sex attractant for male 2-year-cycle spruce budworm, C. biennis, and that trans-11-tetradecenyl acetate is a sex attractant for male green budworm, C. viridis Free.