Lvsects and Inskcticidks 
2C) 
Fig. 18.—Small apricot limb wfith bark removed to show the galleries made by the 
larvae and adults, and holes made by the adults of the shot-hole borer or fruit-tree bark- 
beetle. Enlarged twice. After O. F. Fssig, “Injurious and Beneficial Insects of California.’^ 
Calif. State Com. of Hort. 
Bark and Wood 
Shot-Hole Borer .—Quite often cherry, plum, prune, peach and 
sometimes pear and apple trees are found that have numerous small 
holes in the bark. These will be about the size of a hole made by a 
small shot or the size of a pin head. These holeis are made by the 
shot-hole borer as the adult beetles leave the trees. If the bark is cut 
away, numerous channels running between the bark and sap wood will 
is found. These are made by the grubs of the small brown beetles. 
See Figs. i8 and 19. 
Fig. 19.—Adult of the Shot-hole Borer or Fruit-tree Bark-beetle. Enlarged five times. 
After O. E. Essig, “Injurious and Beneficial Insects of Calif.” Calif. State Com. of Hort. 
This borer very seldom attacks healthy, vigorous trees. It seeks 
those that have been weakened by disease or injury. 
Remedies.—-Keep trees in a healthy, vigorous condition. Destroy 
all infested trees by burning. Whitewash (15) will help to prevent 
sunscald and will, to some extent, keep beetles from laying eggs on the 
trees. 
Scale Insects .—See under Apple and Pear. 
Peach-tree Borer .—A yellowish-white borer about one to one and 
one-quarter ’nches in length when full grown. It bores beneath the 
