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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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546Maggenti and GardnerTHRO: Insecta) Having biting mandibles in both larval andadult stages. menognathous a. see Menorhyncha, metagnath.Menorhyncha n.pl. [Gr. menein, to remain; rhynchos, snout](ARTHRO: Insecta) A former division <strong>of</strong> insects composed <strong>of</strong>those who ingest by suction in both larval and adult stages.see menognath and metagnath.menotaxis n. [Gr. menein, to remain; taxis, arrangement]Orientation in a fixed direction with respect to the stimulus.mental a. [L. mentum, chin] Of or pertaining to the mentum.mental plate (ARTHRO: Insecta) In Lepidoptera, representingthe basal sclerites <strong>of</strong> the labium. see labial plate.mental setae (ARTHRO: Insecta) Setae located on the mentum.mental suture (ARTHRO: Insecta) A distinct sclerite defined bya suture intervening between the mentum and the gula.mentasuture see mental suturementigerous a. [L. mentum, chin; gerere, to bear] (ARTHRO:Insecta) Having a mentum.mentum n. [L. mentum, chin] 1. (ARTHRO: Diplopoda) A median,slightly triangular sclerite in the gnathochilarium. 2.(ARTHRO: Insecta) a. The distal sclerite <strong>of</strong> a typical insectlabium, bearing the palps and the ligula. b. In bees, thesecond joint bearing the palps, paraglossa and ligula.meraspis larva (ARTHRO: Trilobita) The second larval stagewith the pygidium located behind the cephalon; the thoracicregion will appear during succeeding molts. see holaspislarva.merdivorous see scatophagousmereopodite see merusmeridional canal (CTENO) One <strong>of</strong> the eight canals extending inan oral-aboral direction under the external surface; part <strong>of</strong>the gastrovascular system; in Pleurobranchia it emits agreenish-blue luminescence.meristal annuli (ARTHRO: Insecta) In Orthoptera and Odonata,annuli derived from, and adjacent to, the meriston that di-

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