Buprestidae, Cerambycidae, and Scolytidae Associated with Successive Stages of Agrilus Bilineatus (Coleoptera: Buprestidae) Infestation of Oaks in Wisconsin

Abstract

The species of Buprestidae, Cerambycidae, and Scolytidae found in association with Agrilus bilineatus (Weber) in declining oaks, Quercus spp., in Wisconsin, were Chryso- bothris femorata (Olivier) and Dicerca sp. (Buprestidae); Amniscus macula (Say), Cyrta- phorus verrucosus (Olivier), Euderces picipes (Fabricius), Graphisurusfasciatus (DeGeer), Neodytus acuminatus (Fabricius), Sarosesthes fulminans (Fabricius), and Xylotrechus colonus (Fabricius) (Cerambycidae); and Monarthrum fasciatum (Say), Monarthrum mali (Fitch), Pseudopityophthorus minutissimus (Zimmerman), and Xylaterinus paUlUS (Say) (Scolytidae). In general, weakened oaks were first attacked by A. bilineatus. and at times that same year by C. femorata. G. fasdalus, and P. minutissimus. Infestation by M.fasci- atum, M. mali, and X. poUtus began the season following first attack by A. bilineatus. With the exception of A. bilineatus, the above mentioned Buprestidae and Cerambycidae ap- peared to preferentially infest dead wood, often those portions that had died the previous season.