Field Evaluation of Pheromone-Baited Traps for Monitoring Grape Berry Moth (Lepidoptera: Olethreutidae)1

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Abstract
Four pheromone trap designs (Pherocon IC, Pherocon ICP, Delta, and Kitterman), trap placement on the trellis, and two commercial sex pheromone dispensers (Pherocon rubber septa and Albany International capillary tubes) were evaluated for specificity and use for monitoring the grape berry moth (OBM), Endopiza viteana Clemens, in Erie County, Pa., during 1979 and 1981. Placement of pheromone dispenser within the trap and an entrance modification on the Delta trap were also studied. The traps were about equal in their ability to capture OBM, although the Pherocon ICP trap captured fewer OBM than the Pherocon IC trap in one test. Both pheromone dispensers were effective in attracting OBM, but the Albany International dispenser attracted significantly more of a nontarget moth, Episimus argutanus (Clemens). No differences were observed in number of OBM captured when pheromone dispensers were placed at various locations in the various traps. Traps captured the most OBM and were easiest to service when hung from the top trellis wire. The Delta trap captured fewer E. argutanus when the entrance was enlarged by leaving the flaps open. A nontarget species, the redbanded leafroller, Argyrotaenia velutinana (Walker), was captured in low numbers in all pheromone and trap combinations.