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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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748Maggenti and Gardnerprotruded or withdrawn.protuberance n. [L. protuberare, to swell] An elevation, knobor prominence above the surface.prouterus see columellaproventricular valvule (ARTHRO: Insecta) In Diptera, a circularfold <strong>of</strong> the intestinal wall in Tipuloidea.proventriculus n.; pl. -li [L. pro, before; ventriculus, dim. <strong>of</strong>venter, belly] An area <strong>of</strong> the foregut in annelids, insectsand crustaceans just anterior to the midgut, and variouslymodified for grinding or other uses; sometimes called gizzard.proventricular a.provinculum n. [L. pro, before; vinculum, a binding] (MOLL:Bivalvia) A primitive hinge consisting <strong>of</strong> very small teeththat develop before the permanent teeth are formed.provisional mandibles (ARTHRO: Insecta) In some Coleoptera,parts <strong>of</strong> the mandible found in the pupa, for escapingthe cocoon; imaginal cephalic cocoon-cutters.proxagalea see subgaleaproximad adv. [L. proximus, nearest; -ad, toward] Toward theend or portion nearest the body.proximal a. [L. proximus, nearest] 1. Toward or nearer theplace <strong>of</strong> attachment or reference <strong>of</strong> the center or midline <strong>of</strong>the body. 2. (BRYO) Toward the ancestrula.proximal chiasma A chiasma between an inversion loop andthe centromere.proximal gill wheal (MOLL: Bivalvia) In oysters, a low ridge(wheal) on the inner surface <strong>of</strong> the valve showing theproximal edge <strong>of</strong> the gills.proximal hemiseptum (BRYO: Stenolaemata) A hemiseptumprojecting from the proximal zooid wall.proximal sensory area see haptolachusprozona n. [Gr. pro, before; zone, belt] (ARTHRO: Insecta) Theanterior part <strong>of</strong> the pronotum. see mesozona, metazona.prozonite n. [Gr. pro, before; zone, belt] (ARTHRO: Diplopoda)The anterior portion <strong>of</strong> a diplosomite, when the tergum isdivided by a transverse groove. see metazonite.

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