Insect and Fungous Enemies of the Grape. 29 
check. When occurring in numbers they can be easily and promptly 
destroyed by spraying with an arsenical, such as arsenate of lead. 
(See p. 65.) 
CLIMBING CUTWORMS. 
Several species of cutworms are known to attack the grape, and 
instances are recorded of serious damage resulting from their eating 
out the swelling buds in the spring (fig. 31). Injury of this char- 
Fic. 30.—Larva of grape leaf skeletonizer on grape leat. 
acter has frequently been reported in recent years in portions of the 
San Joaquin Valley, Calif., especially in vineyards permitted to 
become more or less grown up with weeds and grasses the preceding 
fall. The plowing under of such vegetation forces many of the 
hungry caterpillars to the vines for food, and the buds and foliage 
are attacked. 
CONTROL. 
Cutworms will not as a rule cause important injury in vineyards 
kept reasonably free from grass and weeds throughout the growing 
