268 BUSH-FRUITS 



certain indication of its presence. Rarely only a single cane will 

 be affected, and then if a crown -borer is not found, the presence 

 of this insect in the main root is almost certain." 



Remedies. "Whenever signs of its presence are noted, it 

 should be at once sought for and destroyed. It is more common 

 in old, carelessly kept fields, and, where numerous in such places, 

 it will be better to grub out and burn all suspected stocks, and 

 replace them by new plants. This should be done before the 

 middle of June, to prevent the maturing of the beetles." 



THE RASPBERRY- CANE BORER (Fig. 40) 



Oberea bimaculata (Oliv.) Order Coleoptera : Family Cerambycidse 



Saunders, Ins. Inj. Frts. 305. 



Lintner, N. Y. Rep. 5: 231. 



Comstock and Slingerland, Bull. Cornell Exp. Sta. 23: 122. 

 Saperda tripunctata, Fabr. 



Harris Ins. Inj. Veg. 114 (Flint Ed.). 

 Oberea tripunctata (Fabr.). 



Bethune, Canad. Ent. 9: 226. 



Saunders, Rep. Ent. Soc. Ont. 1873: 9. 

 Oberea perspicillata, Hald. 



Riley, Mo. Rep. 6: 111. 



The larva of this species is a footless 

 grub, similar to the round-headed apple- 

 tree borer in form, found boring in both 



Fig. 40. Cane-borer. 



blackberry and raspberry canes. It is best Oberea bimaculata. 

 known as a raspberry insect, but in Bulletin 



23 of the Cornell University Experiment Station, from which 

 the following quotations are taken, an instance is recorded of 

 serious injury to blackberries. In this case the boring larvae 

 were found only in the bearing canes, while in raspberries they 

 attack the young shoots. 



"The mature insect is a long-horned, slender-bodied beetle 

 about half an inch in length. It is of a deep black color, except 

 the segment next the head, the prothorax, which is yellow. 

 There are usually two or three black spots on the upper part of 

 this segment, but frequently these are wanting. 



