30 HORTICULTURIST'S RULE-BOOK. 



GRAPE-SLUG or SAW-FLY (Selandria vitis, Harris). Larva 

 about one-half inch long, yellowish green with black 

 points, feeding upon the leaves ; two broods. 

 Remedies. Arsenites. Hellebore. 



GRAPE-VINE FIDIA (Fidia viticida, Walsh). Beetle, re- 

 sembles the rose-bug, somewhat shorter and broader. It 

 appears during June and July, riddling the leaves. The 

 larva also attacks the roots of grapes, seeming to prefer 

 the Worden. 



Remedies. The beetles can be killed by strong arsenical 

 sprays, and the larvae on the roots by bisulphide of carbon. 



GRAPE-VINE FLEA-BEETLE (Graptodera chalybea, Illig.). 



Beetle, of a blue metallic color, about one-fourth inch 

 long, feeding upon the buds and tender shoots in early 

 spring. 



Remedies. Arsenites. The beetle can be caught by 

 jarring on cold mornings. 

 GRAPE-VINE ROOT-BORER (Sciapteron polistiformis, 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 (Ampelophaga 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. 



Remedies. Hand-picking. Arsenites, early in the 

 season. 



There are other large sphinx caterpillars which feed upon 

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

 by hand-picking and spraying. 



PHYLLOXERA (Phylloxera vastatrix, Planchon). A minute 

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

 upon the leaves. 



Preventive. As a rule this insect is not destructive to 



