212 



FRUIT INSECTS 



the branch. Figure 196 shows an egg of the snowy tree-cricket 

 in position in a small apple branch. The egg is laid in late 



summer or autumn and hatches the 

 next May or June. The adults of 

 this and closely allied species some- 

 times injure ripe plums, grapes and 

 peaches by eating out holes about 

 the size of the insect's head. The 

 injury is often attributed to bees, 

 but the latter only collect the juice 

 from the wound made by the tree- 

 cricket. 



The injury from tree-cricket 

 punctures is rarely found in or- 

 chards kept free from rank vegeta- 

 tion. Where cankers have started 

 to form they should be cleaned out 

 i.. ^« .w. « . M with a sharp knife, cutting back 



Fig. 196. — Section of an apple to the live bark, and the wound 

 "f„ToS"n'°G"eX'X" should then be treated with a coat 

 larged. of gas tar to prevent infection. 



Reference 

 Parrott, Jour. Ee. Ent. II, pp. 124-127. 1909. 



Other Apple Insects 



Pear-leaf blister-mite : pear, p. 227. 

 Pear blight beetle : pear, p. 232. 

 Howard scale : pear, p. 234. 

 European pear scale : pear, p. 234. 

 Plum curculio : plum, p. 243. 

 American plum borer, p. 253. 

 European fruit-tree scale : plum, p. 260. 

 European fruit lecanium : plum, p. 261. 

 Fruit-tree bark-beetle : peach, p. 277. 



