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NON-TARGET LEPIDOPTERA CAPTURED IN TRAPS BAITED WITH SPRUCE BUDWORM PHEROMONE IN ONTARIO
Published online by Cambridge University Press: 31 May 2012
Abstract
Traps baited with a 95:5 blend of E:Z-11-tetradecenal, the sex pheromone of the spruce budworm, Choristoneura fumiferana (Clem.), were deployed throughout several summers in Ontario to determine what other Lepidoptera were captured that might be confused with the male C. fumiferana. Eight other species of Tortricidae were captured with sufficient frequency to suggest that they were attracted to the traps: Choristoneura conflictana Wlk. (the large aspen tortrix), six species of Acleris, and one Gretchena species. Of these, C. conflictana can easily be confused with C. fumiferana. The evidence suggests that male C. conflictana were not attracted by the pheromone, but blundered into the traps. They are very similar morphologically to male C. fumiferana, but can be differentiated with care.
Résumé
Des pièges garnis d’un mélange 95 : 5 de E :Z-11-tétradécénal, la phéromone sexuelle de la Tordeuse des bourgeons de l’épinette, Choristoneura fumiferana (Clem.), ont été installés durant plusieurs étés en Ontario dans le but de déterminer si ces pièges capturent d’autres lépidoptères susceptibles d’être confondus avec les mâles de C. fumiferana. Huit autres espèces de Tortricidae ont été capturées suffisamment fréquemment pour que l’on puisse croire au pouvoir d’attraction de la phéromone pour ces espèces : Choristoneura conflictana Walk., la Tordeuse du tremble, six espèces d’Acleris et une espèce de Gretchena. Parmi ces espèces, C. conflictana peut facilement être confondue avec C. fumiferana. Tout indique cependant que les mâles de C. conflictana ne sont pas attirés par la phéromone et qu’ils se sont pris au piège par mégarde. Ils sont très semblables aux mâles de C. fumiferana, mais peuvent facilement en être distingués avec un peu d’attention.
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- Copyright © Entomological Society of Canada 1993
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