Abstract
Cereal grass aphid is a newly invasive aphid pest in North America. It colonizes cultivated crops like wheat, barley and oat, sucking their juices and using them as host sites for reproduction, thus causing considerable damage. Integrating data gleaned from surveys of commercial fields conducted in the Pacific Northwest, this bulletin discusses the pest’s distribution in the region over the past ten years, its identification and biology, the primary signs and symptoms of damage to look for while monitoring your fields, and prevention management practices to adopt. Full-color photography helps growers to identify the bug and the plant injuries it causes and a resource guide provides further assistance, including a comprehensive pest management handbook.