Corn Leafhopper Map

The corn leafhopper, Dalbulus maidis (DeLong and Wolcott) (Hemiptera: Cicadellidae), is an invasive insect that has spread from its center of origin in Mexico to the southernmost regions of the United States. The insect poses a threat to corn production in two ways: through direct feeding on corn plants and by transmitting four pathogens associated with corn stunt disease. Areas highlighted in green on the map represent counties or parishes where the presence of the corn leafhopper has been confirmed at least once during the current growing season by university extension personnel and/or diagnostic laboratories.

If the corn leafhopper has been confirmed near or in your county or parish, it should prompt you to begin scouting your fields for this pest. Keep in mind that the confirmed presence of the insect does not necessarily indicate high population levels. Currently, there is no established economic threshold for the corn leafhopper. For management recommendations specific to the insect in your region, please consult your local university extension office or crop advisor.

Related Resource: "Corn Stunt: Identification, Distribution, and Management"

The current map displays data for 2025.