coxopleurite n. [L. coxa, hip; Gr. pleura, side] (ARTHRO: Insecta) A sclerite of the thoracic pleuron, that articulates with the dorsal margin of the coxa; in lower pteryotic orders forms the trochantin and a ventral articulation with the coxa.
coxopod(ite) n. [L. coxa, hip; Gr. pous, foot] (ARTHRO) The basal or first segment of an appendage; a coxa.
coxosternal a. [L. coxa, hip; Gr. sternon, chest] (ARTHRO: In-secta) Of or pertaining to the coxosternum.
coxosternal plate (ARTHRO: Insecta) In Thysanura, the fused coxites and sternum of each segment.
coxosternite a. [L. coxa, hip; Gr. sternon, chest] The coxite; pleurosternite.
coxosternum n. [L. coxa, hip; Gr. sternon, chest] (ARTHRO: Insecta) The abdominal sternum; a plate of compound origin that includes the areas of the limb bases; pleuroster-num.
coxotrochanteral joint (ARTHRO) One of the two primary bendings of a typical arthropod leg; pertaining to the joining of the coxa and the trochanter. see femorotibial joint.
craniad adv. [Gr. kranion, skull; L. ad, toward] Toward the head or anterior end.
cranium n.; pl. -niums [Gr. kranion, skull] The sclerotic, skulllike part of the head capsule. cranial a.
craspedon n.; pl. craspeda [Gr. kraspedon, edge] 1. (CNID: Hydrozoa) Those possessing a velum. 2. (PLATY: Cestoda) Those with segments that overlap.
craspedote a. [Gr. kraspedon, edge] 1. Having a velum. 2. (PLATY: Cestoda) Having the anterior proglottid overlapping the next posterior one.
crassa n.; pl. crassae [L. crassus, thick] (ARTHRO: Insecta) The mandibular apodemes.
crassus a. [L. crassus, thick] Coarse, thick or tumid in structure.
crateriform a. [L. crater, bowl; forma, shape] Having the form of a saucer or hollow, shallow bowl; pertaining to a crater or funnel.
crawler n. [ON. krafla, to paw] 1. One that crawls. 2. (ARTHRO: Insecta) The first instar nymph of coccids, bearing legs and antennae. 3. (ANN) An annelid.
cremaster n. [Gr. kremastos, hung] (ARTHRO: Insecta) 1. The terminal abdominal segment of a pupa. 2. In a subterranean pupa, a terminal spine. 3. The hooked caudal extremity of the pupa that suspends the chrysalids. cremastral a.
crena n.; pl. crenae [L. crena, notch] A notch, cleft or indentation.
crenate a. [L. crena, notch] Having a scalloped or toothed margin; indented; notched.
crenation n. [L. crena, notch] 1. One of a series of rounded projections forming the edge of an object or structure. 2. (nemata) Used to describe the outer lines of the lateral field.
crenature n. [L. crena, notch] A rounded projection; the indentation as between crenations.
crenulate a. [L. dim. crena, notch] Finely notched or scalloped; plicate; annulet.
crepera n. [L. crepera, dark] A ray of paler color on a dark background.
crepidal punctures (ARTHRO: Insecta) In Scarabaeoidea beetles, a group of microsensilla located anterior to the crepis.
crepis n.; pl. crepides [Gr. krepis, base] 1. (ARTHRO: Insecta) In Scarabaeoidea larvae, a thinly sclerotized, anteriorly concave, median cross bar of the haptolachus, usually asymmetrical and indicated by a fine line when present; a transverse, strongly bowed bar. 2. (PORIF) An ordinary minute monaxon, triradiate or tetraxon spicule on which layers of silica have been irregularly deposited.
crepitaculum n.; pl. -la [L. crepitaculum, rattle] (ARTHRO: Insecta) A stridulating organ.
crepitation n. [L. crepitans, rattling] (ARTHRO: Insecta) The discharge of fluid with an audible explosion, used by certain beetles as a defense mechanism.
crepuscular a. [L. crepusculum, dusk] Activity in dim illumination of shade or twilight. see nocturnal.
crescent n. [L. crescere, to grow] Crescent-shaped; sickle-
shaped. crescentic, crescentiform a.
crest n. [L. crista, crest] A ridge or linear prominence on any part of the head or body. see cristate, carinate.
cribellate a. [L. dim. cribrum, sieve] (ARTHRO: Crustacea) A term used to describe the irregular woven silk webs of certain spiders due to the action of the colulus on the emerging silk.
cribellum n. [L. cribrum, sieve] 1. (ARTHRO: Chelicerata) In spiders, a sieve-like, transverse plate, usually divided by a delicate keel into two equal parts, located in front of the spinnerets; the modified anterior median spinnerets. 2. (ARTHRO: Insecta) A sieve-like chitinous plate near the upper surface of the mandibles.
cribrate colony (BRYO: Stenolaemata) A sheetlike or frondose colony with flattened, anastomosing branches separated by fenestrules.
cribriform a. [L. cribrum, sieve; forma, shape] Sieve-like; cri-brose.
cribriform organ (ECHINOD: Asteroidea) Rows of small, webbed, flattened fringing spines forming enclosed passages for water transport from the marginal plates across the oral surface of certain starfishes.
cribriform plates (ARTHRO: Insecta) Cuticular pitted or sievelike plates of certain scale insects, located on the dorsal surface of the abdomen.
cribrimorph n. [L. cribrum, sieve; Gr. morphe, form] (BRYO: Gymnolaemata) Autozooids bearing costal shields composed completely, or in part, of spines fused medially, and most commonly intermittently along lengths.
cribripore n. [L. cribrum, sieve; porus, passage] (PORIF) 1. A specialized exhalant structure of sponges where several exhalant systems combine to empty into a subsurface cavity. 2. In Polymastia (Demospongiae) an inhalent pore.
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