Behavioral Responses by Scolytus multistriatus (Coleoptera: Scolytidae) to Host- (Ulmus) and Beetle-Associated Chemotactic Stimuli1

Abstract

Host logs and host logs plus attacking beetles both were attractive to in-flight Scolytus multistriatus (Marsham) in field experiments. Ulmus americana logs per se also were attractive to the beetles in laboratory bioassays. Attraction of beetles increased following initial beetle attacks on logs in the field. Logs with attacking female S. multistriatus, screened to prevent further attack, gave a significantly greater attraction than any other host or host-beetle combination tested.