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A chitinous or calcareous plate or similar part of an invertebrate, especially one of the hard outer plates forming part of the exoskeleton of an arthropod.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Zoology) any of the hard chitinous plates that make up the exoskeleton of an arthropod
2. (Zoology) any calcareous or chitinous part, such as a spicule or plate
[C19: from sclero- + -ite1]
scleritic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsklɪər aɪt, ˈsklɛr-)

Zool. any chitinous or calcareous hard plate, spicule, or the like.
scle•rit•ic (sklɪˈrɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sclerite - hard plate or element of the exoskeleton of some arthropods
arthropod - invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin
protective covering - the tough natural covering of some organisms
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Ptecticus australis group: Upper frons, median occipital sclerites and vertex black; wings hyaline with darkened apex; scutum uniformly yellow, sometimes with a metallic shine, rarely black and metallic blue; vein R2+3 nearly twice as long as Rs, parallel to R1 and radial triangle (r2+3) thus virtually replaced by long and narrow, distally opened cell, cross vein M-Cu usually indistinct; M3 straight, parallel to M2 and postcubitus (CuP) unpigmented, hyaline, often indistinct.
The genus Colpocephalum, as found on the Accipitriformes, is characterized by combs of short spiniform setae restricted to the venter of femora III and abdominal sternite III, but the ventral sclerites bearing setae between the vulva and anus are absent in females.
The Kruskal-Wallis analysis showed significance for 6 variables: the Ibague and Pensilvania individuals showed greater body width; populations from higher altitude showed larger cephalopharyngeal sclerites and larger ventral apodemes; the anterior spiracles from the Duitama and Pensilvania individuals were longer; and those of Sibundoy were smallest (Fig.
In all the figures of phalli in this article, the epi- and endophallic sclerites are shown in darker shading, the ectophallic sclerites in lighter shading.
First maxillae are modified into sucking disks and the rim was supported with 41-42 rods which was overlapping small sclerites. The basal rod was elongated and rods were decreasing in size toward periphery (Figs.
Eighth tergite modified into a pair of elongate sclerites much longer than preceding tergite, only vestiture on each sclerite a single trichoid sensilla anteriorly and a row of setae posteriorly; 2nd to 6th sternites rectangular, narrower than tergites, with a double posterior row of setae, lateral setae, elsewhere covered with scales, except near anterior margin, with pair of closely set anterior trichoid sensilla; seventh stemite similarly shaped with anterior pair of trichoid sensilla, single row of posterior setae, lateral setae, elsewhere covered with scales, except at basal third; eighth stemite unsclerotized.
As a result, mouthparts are composed by two groups of dental sclerites, corresponding to the tento pharyngeal and hypopharyngeal sclerite.
Ventral arch (VA) articulating with ventral margin of mouth hook, sclerotized, two foramens, anterior margin with 20-24 denticles, posterior margin V-shaped; epistomal sclerite (ES) bilobed, welded to both parastomal bars (PB), all C-shaped; parastomal bars posteriorly fused with pharyngeal sclerites.
Bright green coloration of living specimens [14] faded in preserved specimens; dorsal surface largely cream-colored to tan, with pronotal sclerites brown, with pair of broad, reddish brown, vertical bands along lateral margins, extending from cervix to tip of A9.
The worms were spindle shaped, about 1.3mm long with large cephaloskeleton and strongly bent sclerites (Fig.