Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

946Maggenti and Gardnerhighest point. 2. (ARTHRO: Insecta) A wing vein when bothends are equally distant from the wing base.vertical bristles (ARTHRO: Insecta) In Diptera, two pair ofbristles, "inner and outer" behind the upper and inner cornersof the eyes; vertical cephalic bristles.vertical classification Classification focusing on common descent,tending to unite ancestral and descendant groups ofa phyletic line into a single higher taxon, thereby separatingthem from contemporaneous taxa having reached asimilar grade of evolutionary change. see horizontal classification.vertical triangle see ocellar triangleverticillate a. [L. verticillus, small whorl] Whorled; providedwith whorls of fine hairs; having spines arranged in nodesor whorls.verticillate antenna (ARTHRO: Insecta) Antenna with whorls ofhair at the joints or segments.vertition n. [L. vertere, to turn] An idionymous organ observedunilaterally among specimens of the same species andstage that has evolutionary significance.vesica see preputial sacvesicating a. [L. vesica, blister, bladder] Blister-like.vesicle, vesicula n. [L. dim. vesica, bladder, blister] 1. A sac,bladder, or cyst, frequently extensible. 2. (ANN: Oligochaeta)The anteriorly or posteriorly directed pockets ofa septum in which male germ cells mature; the reproductivesystem. vesiculate a.vesicular a. [L. dim. vesica, bladder, blister] Containing smallcavities or vesicles.vesicular cell (BRYO) A cell enclosing a large vesicle; found inperitoneal network and funicular strands.vesicula seminalis see seminal vesiclevesparium n. [L. vespa, wasp; -arium, place for] (ARTHRO: Insecta)In Hymenoptera, a natural or artificial colonial nestof vespine wasps.vespid venom gland (ARTHRO: Insecta) In Hymenoptera, a