Chlorodontopera taiwana, commonly known as Taiwanese four-eyed green ruler moth, is a species of moth in the family Geometridae. It was first described by Alfred Ernest Wileman in 1911.
Its wingspan is , the body is primarily grass green with black spots on the front and back of the abdomen. The outer edges of both wings contain tooth processes. All four wings have a black spot in the middle, the four "eyes" of its common name.
Mid-low altitude forests, adults most common in spring and summer.