Close-up comparison of black and dingy cutworms
On the black cutworm (top), the inside pair of tubercles is about 1/3 to 1/2 the size of the outside pair. On the dingy cutworm (bottom) these tubercles are about the same diameter.
This image appears in the following articles:Early-season corn caterpillars (May 1999)
Cutworms and other corn caterpillars (May 2000)
Blacks and dingys: confusing cutworms (May 2004)
Black cutworms, dingy cutworms, and predicted cutting dates (May 2005)