Cassida viridis, commonly known as the green tortoise beetle, is a small insect belonging to the family Chrysomelidae. It is characterized by its vibrant green coloration, which serves as camouflage among foliage. This beetle has a rounded, shield-shaped body and is approximately 6-8 mm in length. It feeds primarily on plants, particularly those in the family Solanaceae, and is known for its ability to secrete a defensive fluid when threatened.