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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 249covariation n. [L. con, with; varius, diverse] Coincident variation;correlation.cowled a. [L. cucullus, hood] Shaped like a hood; hooded.coxa n.; pl. -ae [L. coxa, hip] (ARTHRO) 1. The first or proximalsegment <strong>of</strong> a leg that articulates basally with the wall <strong>of</strong>the thorax. 2. In Crustacea, the segment <strong>of</strong> an appendageadjoining the body sternite, except in forms having a precoxa;coxopodite. coxal a.coxacava see coxal cavitycoxa genuina see coxa veracoxal bridge (ARTHRO: Insecta) The attachment structure betweenthe sternum and pleuron; the pre- and post-coxalbridges.coxal cavity (ARTHRO: Insecta) The cavity in which the coxaarticulates; an acetabulum; coxacava.coxal corium (ARTHRO: Insecta) The articular membrane encirclingthe base <strong>of</strong> a coxa.coxal endite (ARTHRO: Crustacea) A lobe issuing from the innermargin <strong>of</strong> the coxa.coxal epipodites (ARTHRO: Insecta) The small pairs <strong>of</strong> unjointedstyli on the coxae <strong>of</strong> the legs.coxal exite (ARTHRO: Crustacea) A lobe issuing from the outermargin <strong>of</strong> the coxa; coxepipod.coxal file (ARTHRO: Insecta) A series <strong>of</strong> ridges on the coxa <strong>of</strong>the middle legs that by rubbing with a scraper on the trochanter<strong>of</strong> the hind leg produce sounds; a stridulatory apparatus.coxal glands 1. (ARTHRO: Chelicerata) The excretory organs <strong>of</strong>arachnids; in Araneae, located opposite the coxae <strong>of</strong> thefirst and third legs, that function in collecting wastes into asaccule and discharging them through tubes opening behindthe coxae. 2. (ARTHRO: Insecta) Variously modifiedeversible glandular structures at the base <strong>of</strong> the legs. 3.(ONYCHO) The nephridia <strong>of</strong> Peripatus .coxal lobe (ARTHRO: Insecta) In certain larvae, a triangularabdominal area extending from the hypopleurum towardthe meson <strong>of</strong> the sternum.

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