Insects injurious to fruits . dly parasite; otherwise they would soon become asource of much annoyance to grape-growers. Where artificial remedies are required, the vines may besyringed with hellebore and water or Paris-green and water,as directed for the larva of No. 140. Hand-picking mayalso be resorted to. No. 139.—The Pearl Wood-uymph Eudn/as unio (Iliibner), This is a very near relative of Eudryas grata, No. 138,and so closely do the two species resemble each other in thelarval condition that it is difficult to distinguish between has usually been regarded as a grape-feeding ins
Insects injurious to fruits . dly parasite; otherwise they would soon become asource of much annoyance to grape-growers. Where artificial remedies are required, the vines may besyringed with hellebore and water or Paris-green and water,as directed for the larva of No. 140. Hand-picking mayalso be resorted to. No. 139.—The Pearl Wood-uymph Eudn/as unio (Iliibner), This is a very near relative of Eudryas grata, No. 138,and so closely do the two species resemble each other in thelarval condition that it is difficult to distinguish between has usually been regarded as a grape-feeding insect, butfrom recent observations of Mr. Lintner, of Albany, NewYork, who has found and reared the larva on an entirely differ-ent plant, Euphorbia coloratum, it is possible that it may notfeed on the grape-vine at all, and that Dr. Fitch, who first an-nounced this as its food-plant, may have mistaken the larvaof E. grata for unio. Since there seems to be some doubtabout the matter, we shall briefly describe the insect 262 INSECTS INJURIOUS TO THE ORAFE. The moth (Fig. 271) is a little smaller than grafxi, meas-uring, when expanded, about one inch and three-eighths. It differs also in the following par-FiG. 271. ticulars: on the fore wings the brownish-purple stripe on the frontmargin is extended farther alongthe wing, the bordering of the outermargin is paler and more uniform inwidth, the inner edge is wavy insteadof straight, and the bordering of the hind margin is wider andmore distinct. The border on the hind wings is much paler,and extends the whole length of the outer margin. The larva is nearly an inch and a quarter long. The headis of an orange color, spotted with black, the body bandedwith white, black, and orange, most of the segments havingthree white and three black lines on each side of a centralorange band. The body tapers towards the head, the hindersegments being elevated. The chrysalis is reddish brown, with rows of very minuteteeth on the back, and a t
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Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
