Phylliids, commonly known as leaf insects, are a group of insects belonging to the family Phylliidae. They are known for their remarkable ability to mimic leaves, which helps them avoid predators. These insects are primarily found in tropical and subtropical regions, where their camouflage provides effective protection in their natural habitats. Leaf insects exhibit a range of colors and shapes that resemble real leaves, including veins and edges. They are primarily herbivorous, feeding on various types of foliage. Phylliids undergo incomplete metamorphosis, developing through several nymph stages before reaching adulthood, where they continue to display their leaf-like appearance.