Flatidae, commonly known as flatid planthoppers, are a family of insects belonging to the order Hemiptera. These small insects are characterized by their flattened bodies, which resemble leaves or bark, allowing them to camouflage effectively in their natural habitats. They are typically found in tropical and subtropical regions, where they feed on plant sap using their piercing-sucking mouthparts. Flatidae are known for their unique and intricate wing patterns, making them fascinating subjects for study in the field of entomology.