Early-stage European corn borer larvae can be scouted by pulling the upper three to four leaves from the whorl and then unrolling the leaves to count the larvae.

Larvae of European corn borers usually do not survive on corn until it gets "knee high" because high concentrations of a chemical known as DIMBOA in younger plants typically kill the insects.

An insecticide was aerially applied in three different swaths to this corn field. The dark green strips highlight healthier corn plants were the European corn borer larvae were killed by the insecticide. The light brown areas in the rest of field indicate where this pest continued to feed and tunnel into the plants, thereby causing the plants to die sooner and lose yield.

Scouting for eggs masses of second generation European corn borers requires searching the undersides of numerous corn leaves.

Pupae of European corn borers typically occur in the corn stalk or cob.

Sticky traps containing pheromone (red-colored capsule in center) can be used to monitor European corn borer populations in research.

Sticky traps containing pheromone (red-colored capsule in center) can be used to monitor European corn borer populations in research.

Female moths have dull, buff colored wings while males have brown colored wings.

Late-stage larvae occasionally cause extensive tunneling inside corn stalks. This tunnel is nearly four inches in length.

Late-stage European corn borers showing dark and light color phases.