clypeus

noun

1. The shield-shaped front part of an insect's head or a spider's cephalothorax.

   “Cuisinart stuck a human eyelash to his clypeus with saliva, twisted it into a handlebar mustache, and greeted citizens as they arrived at the rim of the sink.”

   “When viewed from the front, the part of the carapace between the anterior eyes and the front edge of the carapace is called the clypeus.”