About Western Corn Rootworm
The western corn rootworm (Diabrotica virgifera virgifera) is the most economically destructive insect pest of corn in the United States, causing $1–2 billion in losses and control costs annually. Larvae feed on corn roots during June and July, causing plants to topple (lodge) and reducing water and nutrient uptake. Adults feed on corn silks, reducing pollination. It has evolved resistance to crop rotation, soil insecticides, and multiple Bt transgenic corn events — a remarkable demonstration of rapid adaptive evolution making it one of the most challenging agricultural pests in the world to manage sustainably.
Geographic Distribution
This insect is found across Europe, with notable populations in France and surrounding regions.
Management
If you suspect a Western Corn Rootworm problem, consult our recommended exterminator services or browse our full pest species database for related species and control guidance.