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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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204Maggenti and Gardnerthe nervous system <strong>of</strong> many invertebrates to which andfrom which ramify anteriorly and posteriorly directednerves and nerve cords; sometimes called the nerve ring.circumesophageal connectives The nerve strand connectiveson each side <strong>of</strong> the esophagus connecting the superesophagealganglia and subesophageal ganglia <strong>of</strong> arthropods,annelids and brachiopods; circumoesophagealconnectives.circumfenestrate a. [L. circum, around; fenestra, window](NEMATA) In Heterodera spp., in which a vulval bridgeacross the vulval cone is not present, producing only a singleopening. see ambifenestrate.circumferential a. [L. circum, around; ferre, to bear] Of orpertaining to the circumference; encompassing; encircling.circumferential canal see ring canalcircumfilum n.; pl. circumfila [L. circum, around; filum,thread] (ARTHRO: Insecta) In dipteran Cecidomyid, antennaljoints bearing elaborately looped or wreathed, thinwalledchemoreceptors with pores lying among fine surfaceridges.circumflex a. [L. circum, around; flexibilis, bendable] Bent orwinding, esp. blood vessels or nerves.circumgenital a. [L. circum, around; gignere, to beget] 1.Surrounding the genital pore. 2. (ARTHRO: Insecta) In scaleinsects, groups <strong>of</strong> small circular glands with an excretoryorifice at the tip, surrounding the genital pore.circumocular a. [L. circum, around; oculus, eye] Around orsurrounding the eye.circumocular sulcus (ARTHRO: Insecta) A commonly occurringgroove that strengthens the rim <strong>of</strong> the eye; may developinto a deep flange protecting the inner side <strong>of</strong> the eye.circumoesophageal see circumesophagealcircumoral a. [L. circum, around; os, mouth] Encircling themouth.circumpedal a. [L. circum, around; pes, foot] Surrounding thebase <strong>of</strong> a leg.circumpharyngeal commissures (connectives) (ANN: Oli-

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