Currently, published information on the effect of trap location on the capture of male dogwood borer in pheromone traps deployed in apple orchards is very limited. One study reported that significantly more moths were captured at 4' (1.2 m) than at 2.3' (0.7 m) or 8' (2.4 m). A recent study showed that the Scenturion dogwood borer lure was most attractive and selective for dogwood borer, although trap location was not investigated. To further refine the pheromone-based monitoring system for dogwood borer, we repeated and expanded upon the previous study of the effect of trap elevation, using the Scenturion lure. The capture of male dogwood borer moths in pheromone traps was measured in a commercial apple orchard near Winchester, VA. Pherocon 1C traps baited with Scenturion dogwood borer lures were deployed in the canopy of apple trees at four elevations (0.6, 1.2, 1.8, and 2.4 m) above the ground. Traps were monitored weekly over a 6-week period to compare the effect of trap elevation on trap catch. In addition, during the period of peak flight of moths, the same traps were monitored at four-hour intervals to determine if the capture of males shows a diel periodicity.
Species 1: Lepidoptera Sesiidae Synanthedon scitula (dogwood borer)
Keywords: monitoring
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