Insects injurious to fruits . number of the joints in their antennae: in imbrncornis themale has about nineteen joints, and the female about sixteen,while in laticoUis both sexes have twelve-jointed remedial measures useful for one species will be equallyapplicable to the other. No. 124.—The Grape-vine Root-borer. ^gei-iapolistiformis larva resembles that of the peach-tree borer. No. 97,in appearance and habits, but is a little larger in size. Thelarvae of the Prionus beetles have only six legs, while thisEgerian larva, in common with most lepidopterous insects,has six
Insects injurious to fruits . number of the joints in their antennae: in imbrncornis themale has about nineteen joints, and the female about sixteen,while in laticoUis both sexes have twelve-jointed remedial measures useful for one species will be equallyapplicable to the other. No. 124.—The Grape-vine Root-borer. ^gei-iapolistiformis larva resembles that of the peach-tree borer. No. 97,in appearance and habits, but is a little larger in size. Thelarvae of the Prionus beetles have only six legs, while thisEgerian larva, in common with most lepidopterous insects,has sixteen legs,—six horny oneson the anterior segments, and ten Fig. 23r. fleshy or membranous ones on the j^X^X^y^TTTYTy^-hinder segments,—and when full «^^^i::^^^f^5^^^grown it measures from an inch to an inch and a half in length. (See Fig. 236.) It lives ex-clusively under ground, and consumes the bark and sap-woodof the grape-roots, eating irregular furrows into their sub-. 230 INSECTS INJURIOUS TO THE ORAFK. stance; sometimes it eats the hark, and at otlier times worksits way uiuler the surface. When full grown, the larva forms a pod-like cocoon ofa gummy sort of silk, covered with little bits of w^ood, hark,and earth, and situated within or adjacent to the injured this it changes to a brown chrysalis, which, whenmature, works itself out of the cocoon by means of minute teeth, with which the segmentsFig. 237. are armed, and thence to the surface of the ground, when the])erfect insect escapes. Fig. 237shows the cocoon with the chrys-alis partly protruding from itand the newly-escaped mothresting on it. The moth resembles a wasp in appearance, and in the noiseit makes durino; its flight. The female is shown in Fiir. antennae are simple and black, the body of a brownish-black color, marked with orange or tawny yellow. Thereis a bright-yellow band on the base of the second segmentof its abdomen, and usually a second one on the fourthjoin
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Keywords: ., bookauthorsaunderswilliam183619, bookcentury1800, bookdecade1880
