Insects and Fungi Attacking Trees, Etc. 335 



trees are injured by the ROUND-HEADED APPLE-BORER 

 (Saperda Candida), Fig. 182, and the FLAT-HEADED BORER 

 (Chrysobothris Jemorata), Fig. 183. The flowering peach, 

 plums, and cherries are injured by the PEACH-BORER (San- 

 nina exitiosa), Fig. 184. Willows, lindens, poplars, locusts, 

 and many other trees are also injured by borers. These 

 are to be destroyed in the same manner as the maple-borers, 

 i.e., by digging them out, carefully examining all trees twice 

 each season in June and August. 



FIG. 184. Peach-borer. 

 (Marlott: Circular No. 17, 2d Series, Dept. Agr. ( Fig. i.) 



Rose-bug or -chafer (Macrodactylus subspinosus), Fig. 

 185. This insect needs no description, and no one insect 

 is more injurious to so many kinds of trees and shrubs and 

 none more difficult to destroy or prevent from doing much 

 harm. 



Remedy. Where arsenate of lead can be safely used, as 

 it can be upon all trees and plants producing flowers that are 

 not cut for house or personal decoration or that produce no 

 edible fruit, this is the most certain remedy. On roses it 

 can be used until the blossoms are nearly open and longer 

 if the flowers are allowed to remain on the bushes until the 

 petals fall. Pyrethrum powder dusted over the bushes each 

 forenoon and again late in the afternoon in bright weather 



