clypeus

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clypeus

[′klip·ē·əs]
(invertebrate zoology)
An anterior medial plate on the head of an insect, commonly bearing the labrum on its anterior margin.
(mycology)
A disk of black tissue about the mouth of the perithecia in certain ascomycetes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Maximum width of head capsule 5.8-6.0 mm; cranium smooth, colour yellowish brown; frons with median longitudinal depression, single posterior frontal seta and single anterior angle seta; one round pigmented area medially at each side of frontal suture; dorsoepicranium with 2 widely separated, medium sized setae at each side; tentorial pits evident; stemmata evident; clypeus subtrapezoidal in shape, with 1 posterior clypeal seta and 1 or 2 exterior clypeal setae; preclypeus weakly sclerotized, without setae; labrum with anterior border trilobed and clithra present; epipharynx (Fig.
But it is not Vespula austriaca: there is no long pilosity on the outer side of the hindtibia, and the clypeal angles are sharp but not acute.
Head Length (HL): Maximum length of head, in full-face view, from the anterior clypeal margin to the mid point of the occipital margin.
Bristles: 3 long and 18 short ones on caput; one long at anterior edge of ocular tubercle; 2 long and 2 short ones on clypeal plate.
Head length was taken dorsally parallel to the coronal suture from the posterior margin to the anterior margin of the frontoclypeus, excluding clypeal lamellae.
Abbreviations used in the description are as follows: Abd = abdominal segments, al = anterolateral pore, cp = clypeal pore, fp = frontal pore, psl = posterosublateral pore, psm = posterosubmedial pore, spm = sternal posteromedial pore, spsm = sternal posterosubmedial pore, Th = thoracic segments.
Setae: Carapace covered in long, erect setae; eye region with strong, long setae; clypeal edge with six long erect setae, except H.
2); dorsal surface brownish black, posterior 3/4 of the surface of paraocular area of parietals coppery red, as well as the semi lunar areas close to the lateral, well marked branches of the occipital ring, and a small spot near to the inner margin of the eye; anterior margin of the clypeus very weakly bidentate; clypeal process rounded, narrow, its surface showing a short row of strong punctures.
Frontal ridge dorsal to the medial ocellus short, deeply sulcate, with very prominent fin-like lateral carinae; below the medial ocellus subobsolete, diverging slightly towards the clypeal suture.