Summary
The wheat head armyworm complex is comprised of two armyworm species, Dargida diffusa (Walker) and Dargida terrapictalis (Buckett), which caused recent and sporadic damage to cereal crops in the Pacific Northwest. This was the first record of D. diffusa as a pest in the PNW. While D. terrapictalis is native to the region, it has not been recorded previously as a pest.
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