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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> 623times present on the back <strong>of</strong> the head that separates thevertex from the occiput dorsally and the genae from thepostgenae laterally.occipital tentacle see cirrusocciput n. [L. occiput, back <strong>of</strong> the head] (ARTHRO: Insecta) 1.The dorsal posterior part <strong>of</strong> the cranium, between the occipitaland postoccipital sutures; in many the boundarieswith the vertex and postgenae are not delimited. 2. InFormicidae, the short region between the vertex and theneck. occipital a.occludent margin (ARTHRO: Crustacea) In Cirripedia, themargin <strong>of</strong> the scutum and tergum bordering the orifice.occludent teeth (ARTHRO: Crustacea) In Cirripedia, smallprojections on the occludent scutal margin interdigitatingwith the teeth on the margin <strong>of</strong> the opposed scutum.occlusion plate (ARTHRO: Insecta) In Heteroptera larvae, asemicircularly shaped plate located below the lateral porein the ostiole; functioning in scent ejection in any horizontaldirection.occlusor a. [L. occludare, to close] An organ or muscle thatcloses an opening.occult a. [L. occulere, to hide] Hidden from sight.oceanic zone The open sea beyond the edge <strong>of</strong> the continentalshelf.ocellara (-ae) see ocellusocellar basin (ARTHRO: Insecta) In Hymenoptera, a concavearea, varying in form and size, occupying the median portion<strong>of</strong> the frontal area.ocellar bristles (ARTHRO: Insecta) In Diptera, bristles arisingclose to the ocelli; in the ocellar triangle.ocellar bulb see tentacular bulbocellar centers (ARTHRO: Insecta) The brain centers <strong>of</strong> theocelli, found in the outer part <strong>of</strong> the ocellar pedicels.ocellar group (ARTHRO: Insecta) In Lepidoptera larvae, sixocelli on the lateral area <strong>of</strong> the larval head, dorsal fourforming the quadrant <strong>of</strong> a circle, ventral two farther apart.

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