
1) Protective covering
Found on
https://www.crosswordclues.com/clue/clypeus

The clypeus is one of the sclerites that make up the `face` of an arthropod. In insects, the clypeus delimits the lower margin of the face, with the labrum articulated along the ventral margin of the clypeus. The mandibles bracket the labrum, but do not touch the clypeus. The dorsal margin of the clypeus is below the antennal sockets. The clypeu.....
Found on
http://en.wikipedia.org/wiki/Clypeus

Plate on face above mouthparts, between labrum and frons
Found on
http://entomology.ifas.ufl.edu/choate/insectclass/glossary_terms.htm

• (n.) The frontal plate of the head of an insect.
Found on
http://thinkexist.com/dictionary/meaning/clypeus/

Lowest part of the insect face, just above the labrum.
Found on
http://www.earthlife.net/insects/glossary.html
Clyp'e·us noun ;
plural Clypei . [ Latin , a shield.]
(Zoology) The frontal plate of the head of an insect.
Found on
http://www.encyclo.co.uk/webster/C/97

Lowest part of the insect face, just above the labrum.
Found on
http://www.geog.ubc.ca/biodiversity/efauna/InsectGlossary.html

[
n] - a shield-like plate on the front of an insect`s head
Found on
http://www.webdictionary.co.uk/definition.php?query=clypeus

The area between the anterior row of eyes and the anterior edge of the carapace.
Found on
http://www.xs4all.nl/~ednieuw/Spiders/Spiderglossary.htm

one of the plates forming the 'face' of an insect.
Found on
https://www.amentsoc.org/insects/glossary/begins/with/c/
noun a shield-like plate on the front of an insect`s head
Found on
https://www.encyclo.co.uk/local/20974

that part of the insect head below the frons (face) and above the labrum. The clypeus is highly variable in size and shape. For example, in the Diptera (flies, mosquitoes, etc.) the clypeus is often visible below the margin of the mouth as a visor-shaped piece.
Found on
https://www.encyclo.co.uk/local/22345

part of the insect head between labrum and frons
Found on
https://www.encyclo.co.uk/local/22346

the area of the facial wall of an insect's head between the labrum and the frons, usually separated from the latter by a groove.
Found on
https://www.infoplease.com/dictionary/clypeus
No exact match found.