INJURIOUS INSECTS OF 1903. 



57 



c. Making Tiuinch Bchvccn the Bark and Wood: 

 Make little holes in bark. 



FRUIT BARK BEETLE. 



Fig. ZO.—Scolytus rugulosus, Ratz. a, adult; b, same in profile; c, pupa; d, larva. 

 After Division of Entomology, U. S. Department of Agriculture. 



Fig. 31. — Work of Scolytiis rugulosus in twig of apple galleries under bark. After 

 Division of Entomology, U. S. Department of Agriculture. 



Remedies: If the tree is seriously infested cut down and burn; 

 if working on a tolerably healthy tree, find source of weakness, rernove 

 and then stimulate tree to greater growth by fertilizers, etc. . Keep the 

 trunk of tree covered with a lime wash to which Paris green has been 

 added. 



