Insect, Pest and Disease Control - Corn
Three species of corn rootworms are found in Tennessee. The Western corn rootworm is the most destructive of the three species. This insect is now prevalent from Texas to the Dakotas, and has moved into Tennessee within the past 10 to 15 years. Until 1955, this rootworm was found in Nebraska, Colorado, Kansas, South Dakota and Iowa. The Western corn rootworm has traditionally moved into the territory of the Northern corn rootworm, which is also found in Tennessee.
"SP341-Y Western Corn Rootworm," The University of Tennessee Agricultural Extension Service, SP341-Y-Rev. 3/05 05-0300, http://trace.tennessee.edu/utk_agexcrop/28