30 horticulturist's rule-book. 



Grape-Slug or Saw-Fly (Selandria ri^is,* Harris). — Larva 

 about one-half inch long, yellowish green with black 

 points, feeding upon the leaves ; two broods. 

 Bemedies. — 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. 



Bemedies. — 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. 



Bemedies. — Arsenites. The beetle can -oe 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. 



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

 the roots. 

 Grape-Vine Sphinx (Ampelophaga 3Iijron, 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, 



Bemedies. — 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 {PMjlloxera 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 



