Nontarget Insects Caught on Emerald Ash Borer Purple Monitoring Traps in Western Pennsylvania

Abstract Emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), is an invasive beetle attacking North American ash trees (Fraxinus L. [Oleaceae]). Populations in infested areas are monitored with purple sticky traps. During summer 2008, we monitored nine pairs of purple traps and clear control traps to determine which other insect families are attracted to these traps and whether these traps might be used to monitor other pest insects. We argue that monitoring bycatch in these traps could greatly increase the potential of finding other invasive species.