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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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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 537mastax n. [Gr. mastax, jaws] (ROTIF) A muscular rounded,trilobed, or elongate organ containing trophi; in suspensionfeeders adapted for grinding, in carnivores modified as forcepsthat can be projected from the mouth to seize prey;the pharynx.mastication n. [L. mastecare, to chew] The act <strong>of</strong> chewing; togrind or crush.masticatory process see gnathal lobemasticatory stomach see gastric millmasticomorphic a. [L. mastecare, to chew; Gr. morphos,form] Designed for chewing.mastidia n.pl.; sing. mastidion [Gr. mastos, breast] (ARTHRO:Chelicerata) Small, conical, nipple-like tubercles on thefront <strong>of</strong> the chelicerae <strong>of</strong> small spiders.mastigobranch, mastigobranchia n. [Gr. mastix, whip;branchos, gill] (ARTHRO: Crustacea) A slender respiratoryprocess at the base <strong>of</strong> the epipod.mastigophore n. [Gr. mastix, whip; pherein, to bear] (CNID:Anthozoa) A nematocyst with a cylindrical hempe and tubeextending beyond the hempe; microbasic with hempe notmore than 3 times the capsule length; macrobasic withhempe 4 or more times the capsule length.mastigopus larva (ARTHRO: Crustacea) Larva in the megalopastage found among some Decapoda.maternal inheritance Inheritance controlled by maternal extrachromosomal determinants.maternal zooid (BRYO: Gymnolaemata) An autozooid that extrudeseggs.mating plug (ARTHRO: Insecta) A plug formed from the accessorygland secretions <strong>of</strong> the male, deposited in the genitalchamber <strong>of</strong> the female, thought to prevent loss <strong>of</strong> sperm insome Culicidae and Lepidoptera; also called spermatophragma.see sphragis.mating spines (ARTHRO: Insecta) In female mayflies, compoundconical spines covering the lower surface <strong>of</strong> the eggvalve.matricidal hatching (NEMATA) Intrauterine larval development

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