Two renderings of caterpillars. Top image is heavily shaded black with long hairs surrounding body. Image below is fainter and shows very tiny legs and prolegs.

Figure 23D–E. Lesser cornstalk borers, top view (D) and side view (E).

Two renderings of caterpillars. Top image is heavily shaded black with long hairs surrounding body. Image below is fainter and shows very tiny legs and prolegs.

Illustrations by USDA (D) and Ponglerd Kooaroon (E).