clypeus
/ˈklɪpiəs/
noun
- A shield-shaped plate on the front of the head of an insect or other arthropod, located above the mouth.
- The clypeus of the ant is often used to identify different species.
- Under a microscope, you can see the clypeus clearly on the beetle's face.
- The clypeus protects the mouthparts of many insects.