Agrilus planipennis is an invasive buprestid from Asia threatening North American ash trees (Fraxinus spp.). Discovered in Michigan and Ontario in 2002, infestations of A. planipennis have since been discovered in areas of Indiana, Illinois, Maryland, Ohio, and Pennsylvania. Land managers estimate EAB has killed ca. 30 million ash trees in Michigan timberlands since its arrival in solid-wood packing materials in the 1990’s. We are screening isolates of Bacillus thuringiensis (Bt) for activity against A. planipennis adults, focusing our efforts on those with Cry toxins active against coleopterans. Although the phloem-feeding larvae of A. planipennis are well protected from topical sprays, adults feed on the ash leaves within the canopy. The goal is to develop a narrow-spectrum Bt-based biopesticide for aerial control this ash-killing buprestid in forested areas of North America.