Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 207at each end.cladus n.; pl. cladi [Gr. klados, branch] (PORIF) Smallerbranch of a tetraxon spicule. cladose a.clamp n. [D. klamp] (PLATY: Trematoda) A complex set ofsclerotized bars, forming a pinching organ on the opisthaptorof a monogenetic trematode.clandestine evolution Evolutionary change introduced anddeveloped in juvenile stages and incorporated into descendantadult stages by paedomorphosis.Claparede organs see urstigmataclasper n. [ME. claspen, to embrace] 1. (ARTHRO: Crustacea)An appendage, including antenna, modified for holding offemale during copulation; or an organ for fixation in parasites.2. (ARTHRO: Insecta) a. A modified male appendageof certain insects that enables the male to hold to the femaleduring copulation. b. The harpe of male Lepidoptera.3. (MOLL: Bivalvia) An extension of the shell which tends toattach to objects.claspette see harpagonesclasp filament see dististylusclasping apparatus (ARTHRO: Crustacea) A movable, heavilysclerotized sclerite of male ostracods, that articulates withthe midportion of the peniferum in a socket near the ventralcardo and the loop of the spermatic tube; probably atactile organ.class n. [L. classis, division] A taxonomic group used in classificationof organisms into which a phylum or division is divided,and which in turn is subdivided into orders.classical taxonomy A taxonomic method incorporating theuses of morphological, serological, and biochemical data inclassifying, describing and naming of organisms. see taxonomy.classification n. [L. classis, division; -fic, make] The processof delimitation, ordering, and ranking taxa (populations andgroups of populations) at all levels by inductive procedures.clathrate, clathrose a. [L. clathratus, latticed] 1. Divided likelatticework. 2. (MOLL: Gastropoda) Shells having orna-