Clypeus

Chamber's Twientieth Century Dictionary · 1908 · p. 22

klip′ē-us, n. the shield-like part of an insect's head.— adjs. Clyp′ēal , Clyp′ēate , Clyp′ēiform , in the shape or form of a shield. [L. clipe us , clypeus , a shield.]