postclypeusn.
/ˌpəʊs(t)ˈklɪpɪəs/, U.S. /ˌpoʊs(t)ˈklɪpiəs/ Entomology.
In certain insects: the upper section of a divided clypeus.
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the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > head > mouth-parts or trophi > clypeus > upper section of divided clypeus
postclypeus1873
1873 A. S. Packard in Amer. Naturalist 7 545 The head is somewhat flattened, squarish, the postclypeus (as we may call the triangular inclosure in the top of the head), shield-shaped with apex acute... The true clypeus is short, transverse.
1888 J. H. Comstock Introd. Entomol. 10 When these [sc. two sclerites of the clypeus] are distinct they are designated as the ante-clypeus and post-clypeus respectively.
1937 C. Longfield Dragonflies Brit. Isles 13 In the Anisoptera the frons is the most prominent portion of the two, in the Zygoptera it is the postclypeus.
1985 Internat. Jrnl. Entomol. 27 277 In both sexes the postclypeus is normally unmarked.
This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).
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n.1873