400 



ANNUAI- REPORT OF THE 



Off. Doc. 



hand. In using the torch many of the insects drop to the ground 

 and escape, while the flame is injurious to the tree — both being ob- 

 jections avoided by the other method. Spraying the tree with ar- 

 senate of lead or Paris green when the tents appear is also a suc- 

 cessful treatment. 



The eggs masses are often very noticeable, purlieularly while tlie 

 trees are leafless, and should be cut off and burned, and every fruit 

 grower should see that no tents of this insect should be permitted 

 on the wild cherry and other trees along the roadsides near his or- 

 chards, unless he is prepared to find them present on his fruit trees 

 the following spring, as a result. The continued presence of this in- 

 sect in an orchard is evidence of neglect. 



THE ROUND-HEADED APPPLE-TKEE BORER. 



(Saperda Candida Fab.) 



This insect is "next after the codling moth, the worst enemv to 

 apple culture in America." The greater portion of its life is spent 

 beneath the bark of the tree where it is only accessible to its enemies 

 in a limited degree. 



Fig. 7. —Round-headed Apple-tree Borer. A, Adult Beetle; B, full-grown grub. Both 



enlarged. 



Life History. 



The adult beetle which is rarely seen is about three-quarters of 

 an inch long, grayish in color, and with two white stripes along its 

 back. It lays its eggs during June, July and August in slits in the 

 bark, usually near the ground. The young beetles which hatch in 

 two or three weeks after the eggs are laid, bore into the inner bark 

 and sapwood where they feed, making shallow cavities, often so near 



