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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> 807Schwann cell (ARTHRO: Insecta) An elongate cell into whichmotor axons sink and become suspended by a suspensoryfold; lemnoblast; neurilemma cell.scientific name The formal nomenclatural designation <strong>of</strong> ataxon.scissorial area (ARTHRO: Insecta) In Coleoptera, the cuttingarea on the mandible <strong>of</strong> a Scarabaeoidea larva; betweenthe dentes and molar area.scissure n. [L. scindere, to cut] 1. A cleft or split in a body orsurface. 2. (ARTHRO: Chelicerata) In Acari, a relativelynarrow band <strong>of</strong> s<strong>of</strong>t skin that cuts the sclerotized cuticleinto plates.sclerification see sclerotizationsclerite n. [Gr. skleros, hard] 1. (ARTHRO) Any sclerotized area<strong>of</strong> cuticle limited by suture lines or flexible, membranousportions <strong>of</strong> cuticle. 2. (BRYO) A thickened line in the operculum,mandible or frontal membrane. 3. (CNID) A calcareousskeletal member <strong>of</strong> the mesogloea.scleritization n. [Gr. skleros, hard; facere, to make] (ARTHRO:Insecta) The formation <strong>of</strong> sclerites.scleroblasts n.pl. [Gr. skleros, hard; blastos, bud] (PORIF)Special amoebocytes in sponges responsible for secretingthe skeleton; consisting either <strong>of</strong> spicules, fibers <strong>of</strong> sponginor both.sclerocyte n. [Gr. skleros, hard; kytos, container] (PORIF)Cells that secrete spicules.sclerophagous see duraphagoussclerosepta n.pl.; sing. -um [Gr. skleros, hard; septum, partition](CNID: Hydrozoa) Calcareous rods <strong>of</strong> corals projectingfrom the basal plate in a fan-like shape between the mesenteries<strong>of</strong> the polyp.sclerotin n. [Gr. skleros, hard] (ARTHRO) A colorless orquinone tanned amber or brown material occurring in thecuticle that accounts for much <strong>of</strong> the stiffening <strong>of</strong> the surfacestructures. sclerotic a.sclerotization n. [Gr. skleros, hard] Hardening by deposition<strong>of</strong> sclerotin or other substances in the cuticle. sclerotic,

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