Q: What is this insect chewing holes into my unripe tomatoes? This caterpillar is a yellow-striped armyworm, and it’s not uncommon to find them on vegetable plants late in the growing season.

The hornworm is a common name for a sphinx moth’s caterpillar (larvae). One species of hornworm is called the “tomato hornworm” because it loves to munch on the leaves of tomato plants. Another ...