Missouri Pest Monitoring Network
Corn Earworm, Helicoverpa zea Boddie, emerge in April and are later joined by migratory moths in June. Corn earworm larvae usually feed at the ear tip. When disturbed they will either fight or curl into a C-shape.
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Identification and Field Scouting
Corn Earworm in Missouri in Missouri (G7110)
Caterpillars in your Garden & Yard (IPM1019)
Corn Insect Pests: a diagnostic guide (M166)
Newsletter Articles for Corn Earworm
Missouri Pest Monitoring Network (06/03/22)
Corn Earworm (Soybean Podworm) in Soybean (09/13/10)