106 



INSECTS AFFECTING THE RASPBERRY. 



the injury is noticed later, the whole cane should be 

 pulled up and destroyed, to be sure to get the larva. 



The Snowy Tree Cricket. 



Oecanthus ulceus. 

 ►Serious damage is frequently done in raspberry 

 plantations by a small, white tree-cricket, which de- 

 posits its eggs in longitudinal rows in the green 

 canes. One of these rows as it appears when the 

 insect has completed its work is 

 represented at Fig. 47, a, and the 

 cane split open to show how the 

 eggs are inserted is shown at b of 

 the same figure. At c may be 

 seen one of the elongated, slightly- 

 curved, yellow eggs, considerably 

 magnified, with an opaque, granu- 

 lated cap at the upper end : d is a 

 more highly magnified view of 

 this cap. The eggs batch early in 

 summer into young crickets bear- 

 ing a general resemblance to the 

 adults, though without wings. 

 They feed upon plant-lice and 

 other insects during their entire 

 existence, being consequently in 

 this way friends rather than foes 

 of the fruit-orower. Bv the latter 



Tree-cricket : a, egg punc 



part of summer thev become fullv ! ur V s: 6 - canc split opeu 



i <- tci sh(i\vegg>: r\ egg, niag- 



grown 



They are then of a pale, £5&&ed 



egg, mag- 

 d, egg-cap, more 



