28 The Horticulturisf s Rule- Book. 



Grape (Grape-vine Flea-Beetle), continued. 



Remedies. — Arsenites. The beetle can be caught by jarring 

 on cold mornings. 

 Grape-vine Root-Borer {^^geria polistiformiSy Harris). — 

 Larva, one and one-half inch or less long, working in the 

 roots. 



Preventive. — Mounding as for the peach-tree borer. 



Remedy. — Dig out the borers. Apply scalding water to the 

 roots. 

 Grape-vine Sphinx (Darapsa myron, Cramer). — A large larva» 

 two inches long when mature, green with yellow spots and 

 stripes, bearing a horn at the posterior extremity, feeding 

 upon the leaves, and nipping off the young clusters of 

 grapes ; two broods. 



Remedy. —Hand-picking. 



There are other large sphinx caterpillars which feed upon 

 the foliage of the vine and which are readily kept in check 

 by hand-picking. 

 Phylloxera {Phylloxera vastatrix, Planchon). — A minute insec, 

 preying upon the roots, and in one form causing galls upon 

 the leaves. 



Preventive. — ^As a rule, this insect is not destructive to 

 American species of vines. Grafting upon resistant stocks 

 is the most reliable method of dealing with the insect yet 

 known. This precaution is undertaken to a large extent 

 in European countries, as the European vine is parti ularl^ 

 subject to attack. 



Remedies.— There is no reliable remedy known. Burn 

 affected leaves. Bisulpliide of carbon poured iu holes in the 

 ground, which are quickly filled, is sometimes effectiv 

 Carbolic acid and water used in the same way is also recom- 

 mended. Flood the vineyard. 

 Rose-Beetle.— See under Rose. 

 Snowy Cricket.— See under Raspberry. 



Thkip or Leaf-Hopper {Erythroneura vitis, Harris). — In vari- 

 ous sfages, one-tenth inch or less long ; feeding on leaves, 

 causing them to appear scorched. 



Remedies.— Sticky fly-paper secured to a stick and carried 

 over the •\dnes, whiL another person scares up the insects. 

 Attract to lights at ni: ht. Kerosene emulsion. In houses, 



