clypeus
An unpaired dorsal unit of the cephalon bearing the labrum medially and the mandibular fossae laterally. The fossae articulate with the dorsal condyle of the mandibles [Wilson, 1989].
Part of head carrying labrum; plate on anterior medial part of head formed by fusion of basal segments of antennae (e.g., Branchipus, also Hexapoda) [Moore and McCormick, 1969].
(Order Anostraca):
Part of cephalon carrying labrum; plate anteromedially on head formed by fusion of basal segments of antennae [McLaughlin, 1980].
(Order Anostraca):
Plate-like structure fromed by medial fusion of bases of antennae. (with/without digiform process). (Syn. frontal plate) [Stachowitsch, 1992].
(Order Tanaidacea):
On underside of head, plate-like structure bearing upper lip (labrum). Separated from labrum by suture [Stachowitsch, 1992].
(Order Isopoda):
In most (but not all) isopods the labrum consists of two pieces; the anteriormost (proximal) piece is referred to as the clypeus, the posteriormost (distal) piece as the labrum proper [Wetzer et al. 1997].
():
Nomenclature of isopod cephalon (A). Examples of isopod mouth appendages: Idoteidae (B, C, F, H); Cirolanidae (D, E, G, I). [Wetzer et al. 1997]
(Order Isopoda):
Part of head (cephalon) bearing upper lip (labrum) [Stachowitsch, 1992].
(Order Isopoda):
Platelike structure of cephalon, anterior to upper lip or labrum, sometimes fused with frontal lamina [Kensley and Schotte, 1989].
()
Schematic representation of an isopod illustrating morphological terms. [Kensley and Schotte, 1989]

Crustacea glossary. . 2011.

Look at other dictionaries:

  • CLYPEUS — Casaubono ad Trebellium, in Divo Claudio, c. 3. duo significat, scutum sive ἀπίδα et imaginem: Prima, inquit, inventio fuit ad necessitatem, ut corpus defenderet; dein accessit decoris et elegantiae studium, coeperuntque pingiscuta: inde nominis… …   Hofmann J. Lexicon universale

  • Clypeus — Clyp e*us, n.; pl. {Clypei}. [L., a shield.] (Zo[ o]l.) The frontal plate of the head of an insect. [1913 Webster] …   The Collaborative International Dictionary of English

  • clypeus — clypeus, or clipeus /klipiyas/ In old English law, a shield; metaphorically one of a noble family. @ clypei prostrati noble families extinct @ …   Black's law dictionary

  • clypeus — clypeus, or clipeus /klipiyas/ In old English law, a shield; metaphorically one of a noble family. @ clypei prostrati noble families extinct @ …   Black's law dictionary

  • clypeus — [klip′ē əs] n. pl. clypei [klip′ē ī΄] [ModL < L clipeus, clupeus, a shield] a median plate or shieldlike process on the anterior portion of the head of certain insects …   English World dictionary

  • Clypeus — For the ancient Greco Roman shield, see Clipeus The clypeus is one of the sclerites that makes 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 …   Wikipedia

  • Clypeus — Der Kopfschild von Coprimorphus scrutator Der Clypeus, auch Stirnplatte genannt, ist Teil des Kopfschildes bei Insekten und liegt mittig direkt über dem Labrum. Oft ist die Stirnplatte durch Furchen deutlich von den anderen Teilen des… …   Deutsch Wikipedia

  • clypeus — n. [L. clypeus, shield] 1. (ARTHROPODA: Chelicerata) The anterior tagma between eyes and cheliceral bases in arachnids. 2. (ARTHROPODA: Crustacea) That part of the head bearing the labrum. 3. (ARTHROPODA: Insecta) The sclerite on the lower part… …   Dictionary of invertebrate zoology

  • clypeus — clypeal, adj. /klip ee euhs/, n., pl. clypei /klip ee uy , ee ee /. 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. [1825 35; < NL, special use of L clypeus, clipeus …   Universalium

  • clypeus — clyp•e•us [[t]ˈklɪp i əs[/t]] n. pl. clyp•e•i [[t]ˈklɪp iˌaɪ, iˌi[/t]] ent a rounded plate at the front of an insect s head, above the mouthparts • Etymology: 1825–35; < NL; L clypeus, clipeus round shield clyp′e•al, adj …   From formal English to slang

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