Trichoplusia ni, commonly known as the cabbage looper, is a species of moth belonging to the family Noctuidae. The larvae, or caterpillars, are known for their distinctive looping movement and primarily feed on plants in the Brassicaceae family, including cabbage, broccoli, and cauliflower. Adult cabbage loopers have a wingspan of about 3 to 4 inches and are typically grayish-brown with a characteristic white stripe running diagonally across their forewings. They are found in various regions, particularly in North America, and can be significant agricultural pests due to their feeding habits.