Episothalma taiwana Wileman, 1911 Chlorodontopera taiwana, commonly known as Taiwanese four-eyed green ruler moth, is a species of moth in the family Geometridae.

[2][3] Its wingspan is 40–47 mm, 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.

[1][4] Mid-low altitude forests, adults most common in spring and summer.