Potato stem that has been broken due to tunneling by a European corn borer larva (M. R. Graustein).

Wheat damage by European corn borer. One stem has frass at the first node below the white head and the adjacent right rear stem has frass but is bearing a normal-colored head (J. W. Van Duyn).

European corn borer larva infesting cotton boll (L. Jenkins).

Broken cotton stem and frass due to infestation by a European corn borer larva (L. Jenkins).

Entrance of European corn borer larvae, two pods on left, and Helicoverpa zea, three pods on right (M. R. Spellman).

Larva of European corn borer in bell pepper that has premature reddening of fruit (C. E. Mason).

Whorl-stage susceptible corn plant of the same heritage as this one, except without the Bacillus thuringiensis,, subspeices kurstaki, gene showing damage by European corn borer (B. D. Barry).

Whorl-stage transgenic corn plant containing the Bacillus thuringiensis,, subspeices kurstaki, gene undamaged by European corn borer (B. D. Barry).

Cocoons of Macrocentrus grandii that have formed and are nearly covering the remains of a European corn borer larva (S. Udayagiri).

Eriborus terebrans female, a parasite of European corn borer larvae in the north central region of the United States (D. A. Landis).