Many economically important ornamental, fruit, and nut trees serve as hosts for larvae of dogwood borer, Synanthedon scitula Harris. Since the 1980s, it has become an increasingly apparent pest of young apple trees in eastern North America, predominantly infesting adventitious root initials (burrknots) below the graft union of trees grown on size-controlling, clonal rootstocks. Our long-term goal is to identify the chemosensory stimuli associated with host apple trees that are used by female dogwood borer to locate favored oviposition sites. The lack of published information regarding behavior of adult dogwood borer under controlled laboratory conditions has necessitated some basic behavioral observations crucial to the development of protocols for measuring particular female beahviors. In this study, we monitored the diel periodicity of adult emergence, female calling behavior, and the latency between mating and oviposition cycle at hourly intervals.