Identification of the Sex Pheromone of the Webbing Coneworm Moth, Dioryctria disclusa (Lepidoptera: Pyralidae)

A sex pheromone component for the webbing coneworm, Dioryctria disclusa, has been identified as (Z)-9-tetradecenyl acetate. Traps baited with rubber septa impregnated with this compound at loadings of 30 to 300 μg caught the same as or significantly better than traps baited with two virgin female moths. Addition of 3 to 30% of the E isomer did not increase trap catch, and only (Z)-9-tetradecenyl acetate was found in the female extrac

EVALUATION OF INUNDATIVE RELEASES OF TRICHOGRAMMA EXIGUUM (HYMENOPTERA: TRICHOGRAMMATIDAE) FOR SUPPRESSION OF NANTUCKET PINE TIP MOTH (LEPIDOPTERA: TORTRICIDAE) IN PINE (PINACEAE) PLANTATIONS

Inundative releases of Trichogramma exiguum Pinto and Platner were evaluated for suppression of the Nantucket pine tip moth, Rhyacionia frustrana (Cornstock), in first-year loblolly pine, Pinus taedu L., plantations. Three releases. spaced 7 d apart. were made in three 0.4-ha plots during second-generation R. frusrruna egg deposition. Each release included three cohorts of 7: exiguum developmentally separated by 25 degree-days. Mean-t SD field release rate for each cohort was 328 238 it 88 379 females/ha. Mean 7: exiguum emergence under laboratory conditions for released cohorts was 96 f 2%, with 74 f 3 % females, of which 1 + 1 % of females displayed brachyptery; female longevity was 18 + 3 d. Field emergence averaged 96-c 4%. Parasitism of R. frusrrana eggs was significantly increased, ranging fro