Northern Corn Rootworm
Northern corn rootworm adults are about ¼-inch long with pale green to yellow coloration. Damage is caused by larvae, which tunnel within corn roots and prune them as they feed. Severe damage causes the plants to “lodge” or lean over.
Source of information
J.P. Michaud (http://entomology.k-state.edu/extension/insect-information/crop-pests/corn/cornrootworm.html)
Pest photo source