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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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776Maggenti and Gardnerthin diactinal microsclere lacking ornamentation.raptorial a. [L. raptor, robber] Fitted for grasping prey.raptorial claw 1. (ARTHRO: Crustacea) The toothed dactylcurved backward on the propodus. 2. (ARTHRO: Insecta) InMantids, the spinose tibiae and femur that produce thehook.rasorial a. [L. rasor, scraper] Adapted for scratching.rasp n. [OF. rasper, to scrape] 1. (ARTHRO: Crustacea) One ormore rows <strong>of</strong> chitinous plates or scales on the pereopodalor uropodal surface segments. 2. (ARTHRO: Insecta) Aroughened surface for the production <strong>of</strong> sound by friction.see strigulating organs.Rassenkreis n. [Ger. Rasse, race; Kreis, circle] Polytypic species;rheogameon. see circular overlap.rastellum n. [L. dim. rastrum, rake] (ARTHRO: Chelicerata) InArachnida, a structure on the chelicera bearing numeroustooth-like projections, stout and rigid spines, or seta; thepaturon.rastellus n. [L. dim. rastrum, rake] (ARTHRO: Chelicerata) InArachnida, the teethlike projections on the chelicera borneby the rastellum or paturon.raster n.; pl. rastri [L. rastrum, rake] (ARTHRO: Insecta) Acomplex <strong>of</strong> bare areas, hairs and spines on the ventralsurface <strong>of</strong> the last abdominal segment, in front <strong>of</strong> the anusin Scarabaeoidea; comprised <strong>of</strong> septula, palidium, teges,tegillum in some groups, and campus in Coleoptera.rastrate a. [L. rastrum, rake] Having longitudinal scratchesover the surface.rataria larva (CNID: Hydrozoa) In some Siphonophora, freeswimminglarva, hourglass in shape, with an anterior disccollar; develops from the conarium larva.ratite a. [L. ratis, raft] Lacking a keel; a smooth ventralsomite; lacking ridges or raised lines. see carinate.rat-king cercariae (rattenkonig) (PLATY: Trematoda) Marinecercariae that occur in masses, with the tail tips attachedto a protoplasmic mass.rat-tailed larva/maggots (ARTHRO: Insecta) In Diptera, Syr-

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