Tomato hornworms, Manduca quinquemaculata, are large green caterpillars that devour tomato plants along with other nightshades including peppers, potatoes, and eggplant. They can also be a little ...

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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.