Cervical suture see cervical groove

cervical vesicle (NEMATA) Distended cuticle anterior to the cervical groove.

cerviculate a. [L. cervix, neck] Having a long neck or neck-like portion.

cervicum n. [L. cervix, neck] (ARTHRO) The neck region.

cervinus a. [L. cervinus, deer] Reddish, deer-gray.

cervix n.; pl. cervices [L. cervix, neck] 1. The neck or necklike part. 2. A constriction of the mouth of an organ. 3. (ARTHRO: Chelicerata) In Acariformes, the dorsal part of the infracapitulum, between the line of attachment of the cheli-ceral frame and the base of the labrum, and laterally by the lateral ridges, and encompasses the capitular saddle and cheliceral grooves. 4. (ARTHRO: Insecta) A membranous region that extends from the occipital foramen at the back of the head to the prothorax.

cesious a. [L. caesius] Bluish-gray.

cespiticolous a. [L. caespes, turf; colere, to inhabit] Inhabiting grassy places.

cespitose, caespitose a. [L. caespes, turf] Growing in dense clumps or tufts; matted.

cestiform a. [L. cestus, girdle; forma, shape] Girdle-shaped.

Cestoda, cestodes n.; n.pl. [L. cestus, girdle] A class of elongate, dorsoventrally flattened obligate parasitic worms that develop in an intermediate vertebrate or invertebrate host and spend their adult life mainly in vertebrates; commonly called tapeworms.

chaeta n.; pl. chaetae [Gr. chaite, hair] (ANN) Seta.

chaetiferous see setiferous chaetiger n. [Gr. chaite, hair; L. gerere, to bear] (ANN) Any segment bearing setae.

Chaetognatha, chaetognaths n.; n.pl. [Gr. chaite, hair; gnathos, jaw] A phylum of free-living planktonic or benthic animals, commonly called arrowworms, having an elongated more or less translucent body with large grasping spines at the head and a posterior horizontal tail fin.

chaetoparia n.; pl. -pariae [Gr. chaite, hair; pareion, cheek] (ARTHRO: Insecta) In scarabaeoid larvae, the inner part of the paria covered with bristles.

chaetophorous a. [Gr. chaite, hair; pherein, to bear] Bearing bristles.

Chaetopoda n. [Gr. chaite, hair; pous, foot] Annelids that have setae, the Polychaeta and Oligochaeta.

chaetosemata n.pl.; sing. chaetosema [Gr. chaite, hair; sema, sign] (ARTHRO: Insecta) In some families of Lepi-doptera, one pair, rarely two pairs, of sensory organs located on the head in the form of setose tubercles.

chaetotaxy n. [Gr. chaite, hair; taxis, arrangement] Pattern, arrangement and nomenclature of bristles on any part of the exoskeleton. chaetotactic, chaetotaxal a.

chainette n. [F. chainette, a catenary curve] (platy: Cestoda) A longitudinal band of single or double rows of very small hooks located on the tentacles.

chaintransport (ARTHRO: Insecta) The passing of food from one worker ant to another during transport to the nest.

chalastogastrous a. [Gr. chalastos, loose; gastros, stomach] (ARTHRO: Insecta) Having the abdomen attached to the thorax by a broad base, as in certain Hymenoptera.

chalaza n.; pl. -zas, -zae [Gr. chalaza, pimple] (ARTHRO: Insecta) A pimple-like swelling on the body-wall that bears a seta.

chalceous, chalceus a. [Gr. chalkos, copper] Brassy in color or appearance.

chalimus stage (ARTHRO: Crustacea) In Monstrilloida, a larval infective stage that fixes to the host with a frontal filament; parasites of various marine invertebrates.

challenge n. [OF. chalangier, contest] The testing of induced immunity of a potential host by exposure to parasites after immunization.

chalone n. [Gr. chalinos, to curb] Any internal secretion with inhibitory actions. see hormone.

chalybeate, chalybeatus, chalybeous, chalybeus a. [Gr. chalybos, steel] Metallic steel-blue in color.

chambered a. [Gr. kamara, chamber or vault with arched roof] Having divisions or provided with a chamber.

chambered organ (ECHINOD: Crinoidea) A five chambered structure, encased in the cup-like cavity of the aboral nervous system; connecting canals form the nerves of the stalk and cirri.

chank n. [Hind. cankh, conch shell] (MOLL: Gastropoda) A pear- or top-shaped shell utilized as ornaments and bangles and held sacred by the Hindus (the Xancus pyrum and the pear Turbinella ).

channeled, channelled a. [L. canalis, groove] Having furrows, grooves or channels; directed into or along a channel.

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