Semiochemicals of the Asian Longhorn Beetle (Anoplophora glabripennis) were identified using electroantennography coupled gas chromatography (GC-EAD) techniques. Plant volatiles of host and non-host trees were collected on Super-Q adsorbent and were extracted for GC-EAD analysis. Several antennally active volatiles were common across the host range of ALB (and absent in non-hosts), including cis-3-hexene-1-ol, caryophyllene, delta-3-carene, linalool, and camphene. Volatile pheromone components were collected from female ALB or activated female extracts. These compounds are produced from known precursors (found in females and absent in males) and were shown to be antennally active in male ALB antennae. Bioassays were performed using a Y-maze olfactometer. The activated female extracts were more attractive to male ALB than regular extracts, and synthetic compounds of the EAD-active parts of the female extracts were more attractive than controls. The pheromone components and plant volatiles were tested in July 2006 and July - August 2007 in Ningxia, China using a randomized complete block design with flight intercept panel traps. The pheromone blend components and plant volatiles combined were more attractive to ALB than controls in the field studies conducted in July 2006, but had equal sex ratios. Results from the 2007 field season suggest that female pheromone blends plus plant volatiles attracted more beetles when compared to controls, and in addition, preferentially attracted males.