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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> 745areolets between the costal cells and the apical margin <strong>of</strong>the wings.protonephridium n. [Gr. protos, first; nephron, kidney]Nephridium having a flame cell or solenocyte at its proximalend; found in coelomate, pseudocoelomate andacoelomate animals.protonephromixium n. [Gr. protos, first; nephron, kidney;mixis, mingling] A protonephridium that opens into thecoelomoduct. see nephromixium.protonymph n. [Gr. protos, first; nymphe, young woman](ARTHRO: Chelicerata) In Acari, the 1st stase <strong>of</strong> the nymphalphase; in Mesostigmata, the early, bloodsucking stagein the life cycle.protonymphon larva (ARTHRO: Chelicerata) In Pycnogonida,the 1st stage larva with 3 walking legs, with the mouthanterior to the chelicera.protoplasm n. [Gr. protos, first; plasma, formed or molded]Matter by which the phenomena <strong>of</strong> life are manifested.protoplasmic a.protoplast n. [Gr. protos, first; plastos, formed] The livingpart (protoplasm) <strong>of</strong> the cell covered by the cell membrane.protoplax n. [Gr. protos, first; plax, flat plate] (MOLL: Bivalvia)In Pholadidae, simple, nearly flat, dorsal chitinous or calcareousplate anterior to the umbo. see mesoplax, metaplax.protopod n. [Gr. protos, first; pous, foot] (ARTHRO: Crustacea)The part <strong>of</strong> an appendage, consisting <strong>of</strong> coxa and basis orprecoxa, coxa, and basis, sometimes fused; protopod(ite);sympod; sympodite.protopod(ite) n. [Gr. protos, first; pous, foot] (ARTHRO) Thebasal stalk <strong>of</strong> a segmented appendage; sympod or sympodite.see protopod.protopod larva (ARTHRO: Insecta) In some parasitic Hymenopteraand Diptera, the earliest phase with segmentationabsent or indistinct and with rudimentary appendages onlyon the head and thorax. see polypod larva, campodeiformlarva.

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