Tuesday, May 8th 2012 — Corn Earworm

Red: high risk, Yellow: moderate risk, Green: low risk, Brown: insect source region
How to Read the Maps

With a predominantly northwest to southeast wind flow weather pattern in place across the central and eastern United States, south to north corn earworm migration probabilities are expected to be very limited, if at all, in the next five days. The only opportunity for isolated flights comes late Thursday into early Friday mainly across the Plains and western Midwest as a cold front advances rapidly through the corn-growing region. South to southwest winds are expected to the east of the cold front Thursday night and may result in some shorter distance flights from northern Texas and Oklahoma source regions. Overall, however, corn earworm migration risks are not predicted in the next five days.

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Corn Earworm

CEW thumb

Corn Earworm (Helicoverpa zea) Corn earworm is found throughout North America except for northern Canada and Alaska. Normally, corn earworm does not overwinter successfully in the northeastern United States. It is known to survive as far north as about 40…

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