clypeus

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clypeus

(klĭp′ē-əs)
n. pl. clyp·ei (-ē-ī′)
A shieldlike plate on the front of the head of an insect.

clyp′e·al (-ē-əl) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

clypeus

the cuticular plate on the head of an insect above the LABIUM.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005