This can be a European Corn Borer or a cutworm, depending where on the plant it is entering. European corn borer - Cream to light pink caterpillar with reddish-brown to black head; body up to 26 mm long with several rows of dark spots; 3 pairs of legs near head; 5 pairs of prolegs, bores into stems leaving tangled frass and silk near entrance hole; stems break or plants wilt readily; young larvae sometimes feed under the fruit cap and later bore into the fruit. everal species of fat, basically gray, brown, or black caterpillars; 40 to 50 mm long when fully grown; 3 pairs of legs, 5 pairs of prolegs, occasionally feed above ground when young; older larvae burrow in soil during day, sever plant stems at night; curl up when disturbed. Work to increase the numbers of beneficial insects in the region by using less insecticides, promoting pollinator plants, and when needed use less toxic pesticides.  Pesticides that contain befenthrin work well.