Abstract
The wheat head armyworm complex is comprised of two armyworm species,Dargida diffusa(Walker) andDargida terrapictalis(Buckett), which caused recent and sporadic damage to cereal crops in the Pacific Northwest. This was the first record ofD. diffusaas a pest in the PNW. WhileD. terrapictalisis native to the region, it has not been recorded previously as a pest.This publication covers identification, biology and integrated pest management for WHAC. We emphasize pest monitoring and field scouting methods, and also discuss natural insecticides.