PACIFIC PEACH-TREE BORER 123 



not drop off as is the case with those injured by the plum curculio, 

 but badly punctured fruit becomes gnarly and worthless. After 

 the egg is placed in the puncture made by the female beetle, it is 

 pushed down with the insect's snout. 



Life History. The egg hatches in a few days, the grub working 

 toward the kernel of the pit. It is single-brooded, its complete 

 development requiring about three months. It hibernates in the 

 adult stages, appearing on the tree at blossoming time. 



Control. If this pest is unusually abundant, use a spray of 

 two to three pounds of arsenate of lead in a barrel of water, just 

 as the blossoms fall, and again three weeks later. 



The Plum Curculio. Full treatment is given under apple 

 insects, as in some localities it is a destructive pest of the apple. 

 Figure 146 is an excellent representation of this insect in its various 

 stages and of the injury it causes upon stone fruits. 



Supplementary List for Plum. Many other insects besides 

 those just described are less commonly found attacking the plum. 

 In the following list the pages given are for the descriptions given 

 in this book. 



Apple-leaf hopper, p. 83 lo emperor moth, p. 128 



Banded hair-streak "June bug," p. 211 



Blind-eyed sphinx Leaf crumpler, p. 98 



Bud-moth, p. 98 Long-horned prominent 



Buffalo tree-hopper, p. 78 Oblique-banded leaf roller, p. 96 



Brown fruit chafer, p. 105 Oyster-shell bark-louse, p. 72 



Cecropia silk moth, p. 91 Putnam scale, p. 74 



Cherry -leaf beetle, p. 132 Rose chafer, p. 156 



Cherry-tree scale, p. 127 San Jose scale, p. 70 



Cherry-tree thecla Scurfy scale, p. 73 



Dominican case- bearer Tarnished plant bug, p. 84 



Double-eyed sphinx Tent caterpillar, p. 78 



Fall canker worm, p. 89 Thysbe clear wing 



Fall web worm, p. 265 Tree cricket, p. 140 



Flat-headed apple-tree borer, p. 188 Unicorn prominent 



Grape flea beetle, p. 155 Viceroy 



Gray dagger-moth White-marked tussock moth, p. 269 



Hop plant-louse, p. 214 



ATTACKING TRUNK, BRANCHES, AND TWIGS OF PEACH 



For a discussion of the Eastern peach-tree borer which injures 

 peach trees see page 113. And for a treatment of the fruit-tree 

 bark beetle, see page 5. 



Pacific Peach-tree Borer (Sanninoidea opalescens Edw.). This 

 species is found on the Pacific coast, where it exhibits the same 

 habits as its eastern congener, and resembles it closely. The steel- 



