Figure 16. Squash vine borer moth on foliage (top) and larvae boring inside squash stem (bottom).
Moth with wings at rest, at top. Black wings and three black spots on orange body. Below is a stem cut lengthwise, revealing whitish grubs with brown heads.

Photos by Ansel Oommen, Bugwood.org (top), and Gerald Holmes, Strawberry Center, Cal Poly San Luis Obispo, Bugwood.org (bottom).