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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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858Maggenti and Gardner<strong>of</strong> larvae; spiracular disk; respiratory disk. see spiracularlinestigmatal line see spiracular linestigmatal spine (ARTHRO: Insecta) In larval Diptera, the extrusiblestructure (modified terminal spiracles) in the analsiphon.stigmatic cord (ARTHRO: Insecta) In some larvae, a delicatecord running from the scar <strong>of</strong> a nonfunctional spiracle to anadjacent part <strong>of</strong> the tracheal system.stigmatic scar (ARTHRO: Insecta) The mark on the surfacemade by the ecdysial tube after molting.stigmatiferous a. [Gr. stigma, mark; L. ferre, to bear] (AR-THRO: Insecta) Bearing spiracles or stigmata.stigmergy n. [Gr. stigma, mark; mergere, to dive] (ARTHRO:Insecta) In social insects, the directing <strong>of</strong> work by individualcolony members based on work previously accomplishedas opposed to direct signals from nestmates.stimulus n.; pl. stimuli [L. stimulus, a goad] Any change <strong>of</strong>external or internal conditions resulting in a change in theactivities <strong>of</strong> an organism.sting apparatus (ARTHRO: Insecta) In female Hymenoptera,the modified ovipositor <strong>of</strong> aculeates and many terebrantes,usually containing the venom gland and one accessorygland, the Dufour gland; others may sometimes be present:the Koshevnikov or Koshewnikow gland, the Bordas'gland, the sting sheath gland, or anal gland.sting autotomy (ARTHRO: Insecta) In Hymenoptera, enlargedbarbs on the sting apparatus that remain at the sting site;autothysis.stinging button (CNID) A group <strong>of</strong> nematocysts on a jellyfishtentacle, especially the Portuguese man-<strong>of</strong>-war.sting sheath (ARTHRO: Insecta) In Hymenoptera, the cover <strong>of</strong>the sting formed by the lateral halves <strong>of</strong> the third valvulae.sting sheath gland/sheath gland (ARTHRO: Insecta) In Hymenoptera,a gland in the sting sheath valves <strong>of</strong> variousbees, in the form <strong>of</strong> a high palisade gland epithelium beneatha strongly sclerotized strip on the outer sides <strong>of</strong> the

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