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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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424Maggenti and Gardneronly on one side; demibranch.hemicephalous a. [Gr. hemisys, half; kephale, head] (AR-THRO: Insecta) Referring to dipteran larvae with reducedhead capsule retractable within the thorax; an intermediatecondition between eucephalous and acephalous; hemicephalic.hemidesmosome n. [Gr. hemisys, half; desmos, bond; soma,body] Attachment process <strong>of</strong> the epidermal cell to the cuticle;process from the cuticle to which microtubules are attached.see desmosome, ton<strong>of</strong>ibrillae.Hemimetabola n. [Gr. hemisys, half; metabole, change] A division<strong>of</strong> insects in some classifications (=Exopterygota) inwhich the nymphs live an aquatic life as opposed to theadult form.hemimetabolous metamorphosis (ARTHRO: Insecta) Simpleor gradual metamorphosis in which the nymphs are generallysimilar in body form to the adults, but resemble theadults more with each instar.hemiomphalous a. [Gr. hemisys, half; omphalos, the navel](MOLL: Gastropoda) Having the opening <strong>of</strong> the umbilicuspartly plugged.hemiphragms n.pl. [Gr. hemisys, half; phragma, wall] (BRYO:Stenolaemata) Shelf-like skeletal projections into the zooidliving chamber alternating from opposite sides <strong>of</strong> the zooecia;hemiphragms in any single zooid usually comparable inmorphology. see hemisepta.hemipneustic a. [Gr. hemisys, half; pnein, to breath] Having8 functional spiracles. see polypneustic.hemiseptum n.; pl. hemisepta [Gr. hemisys, half; L. septum,wall] (BRYO: Stenolaemata) Shelf-like projections into zooidliving chambers; usually on proximal walls, but also in pairson proximal and distal walls which differ in morphology.see hemiphragms.hemispondylium n.; pl. -ia [Gr. hemisys, half; spondylos,back] (BRACHIO) In Thecideidae, one <strong>of</strong> two small platesattached to a medium septum and not to the valve floor orside walls, bearing the median adductor muscles.hemisyrinx n. [Gr. hemisys, half; syrinx, pipe] (BRACHIO) A

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