Scolytus schevyrewi, the banded elm bark beetle was first detected in North America in the summer of 2003 in Colorado and Utah. Soon after its detection we initiated studies on its biology and chemical ecology. Its life cycle can be completed in about 30 days. Various attractants have been tested so that effective monitoring can be conducted. The insect responds well to multilure, the attractant for Scolytus multistriatus, the smaller European elm bark beetle and to 2-methyl-3-buten-2-ol, a hemiterpenoid, normally associated with coniferophagous bark beetles. We also trapped volatiles on Porapak Q from female and male S. schevyrewi feeding in freshly cut elm logs, but to-date no particular compounds of interest have been detected. In 2004, we are continuing studies on the chemical ecology, flight periodicity, and competition studies between the banded elm bark beetle and the smaller European elm bark beetle. Results from these new experiments will be presented.