New York Agricultural Experiment Station. 951 



neck to enter, while a considerable cavity may be excavated in the 

 fleshy part of the fruit. These cavities, protected from rapid drying 

 by the small size of the opening, make excellent starting points for 

 fruit rot; so that the initial in- 

 jury by the cricket is but a small 

 part of the final harm to the fruit. 

 It should be said, however, that 

 such injury to fruits has not been 

 found in New York State, but 

 it is reported to be quite com- 

 mon in Kentucky. 



The same small initial injury 

 and considerable attendant 

 damage later result from the 

 oviposition punctures; for these 

 are sometimes followed by slight 

 exudation of sap, with formation 

 of a gummy substance and, par- 

 ticularly on apple trees, open the 

 way for canker-producing fungi. 

 The cankers formed about these 

 punctures are usually small, but 

 they may later be extended by 

 the entrance of other fungi and do 

 much harm to the trees. They 

 also serve as excellent harboring 

 places of the woolly aphis. 



The possibility of injury from 

 the orchard crickets in these indi- 

 rect ways probably more than 

 counterbalances the good they 

 may do by destroying scale in- 

 sects and plant lice. They should 

 not be allowed to increase; but 

 are usually kept well restricted 

 in weil-cared for orchards. The 

 freedom of such orchards from 

 some of the favorite weed-hosts 

 of crickets, the pruning and the 

 spraying seem to make conditions 

 unfavorable to their increase ; but the exact manner in which these 

 conditions and operations affect the crickets has not been determined. 



It is evidently inadvisable to set young apple orchards adjacent 

 to large plantations of raspberries without some precautions against 

 tree crickets; as these insects are usually found most numerous in 

 such localities, both the orchard species and the one which affects 

 the raspberry particularly. 



•KSVr. 



Fig. 34. — Striped Thee Cricket. 

 a, Egg punctures in raspberry (X H); 



b, Longitudinal section in same (X 3); 



c, Egg (X 15); d, Egg cap (X 50); 

 e, Spicule of egg cap (X 500). 



