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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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824Maggenti and Gardnersessile n. [L. sedere, to sit] Incapable <strong>of</strong> movement from placeto place; attached directly, without a stem or petiole; permanentlyattached.sessoblast n. [L. sedere, to sit; Gr. blastos, bud] (BRYO: Phylactolaemata)A statobast cemented to the substrate.seston n. [Gr. sesis, sifting] Microplankton; all organisms livingor dead, swimming or floating in aquatic habitats. seenekton, neuston, plankton.seta n.; pl. setae [L. seta, bristle] 1. A bristle, hair or filamentprocess <strong>of</strong> the cuticle with which it articulates or throughwhich it protrudes. see poison seta, penial seta. 2. (ANN)Chaeta. 3. (ARTHRO: Insecta) Hollow structures formed asextensions <strong>of</strong> the epidermal layer; macrotrichia or scales.4. (ARTHRO: Crustacea) In Cirripedia, a bristle or spine ontrophi and cirri. setal, setate a.setaceous a. [L. seta, bristle] Bristlelike, slender.setal membrane The membranous floor <strong>of</strong> a hair socket.setal sac (ANN: Polychaeta) A pocket <strong>of</strong> the parapodial ramicontaining a single cell at the base, that continually producenew setae as the old are lost.setate a. [L. seta, bristle] Provided with bristles.setiferous a. [L. seta, bristle; ferre, to carry] Bearing setae orbristles; setigerous; chaetiferous.setiform a. [L. seta, bristle; forma, shape] Having the shape <strong>of</strong>a bristle or seta.setigenous a. [L. seta, bristle; Gr. genitus, to produce] Givingrise to setae.setiger n. [L. seta, bristle; gerere, to bear] (ANN: Polychaeta)A segment carrying setae.setigeris n. [L. seta, bristle; gerere, to bear] (ARTHRO: Insecta)A structure on the protibia similar in form and use asthe strigil or scraper; the tibial comb.setigerous a. [L. seta, bristle; gerere, to bear] Bearing setae;setiferous.setigerous lobe (ANN: Polychaeta) The lobe <strong>of</strong> the parapodiumthat bears the setae.

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