Mustilia undulosa is a small insect belonging to the order Hemiptera. It is commonly known as the wavy-winged bug due to the distinctive pattern on its wings. This insect is typically found in tropical regions, where it feeds on plant sap using its piercing-sucking mouthparts. Mustilia undulosa is known for its vibrant coloration, with a combination of green, yellow, and black markings on its body.