244 



PESTS OF ORCHARD AND SMALL FRUITS 



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Fig. 321.— The Red- 

 necked C ane-borer. 

 Larva, enlarged to twice 

 natural size. Original. 



cane near its base, resumes work in the spring and soon transforms. 

 The adult is a clear-winged moth, and emerges in June through a hole 

 in the cane cut by the grub before transforming. 



Removal and destruction of infested canes in the fall or spring is 

 the only remedy. 



The Red-necked Cane-borer {Agrilus ruficollis Fab.) 



A whitish grub, one half to three fourths 

 of an inch long, with an enlarged head, bores 



in the canes of black- 



berry and raspberry. 

 In the former the bur- 

 rows make a spiral 

 girdle just beneath 

 the bark, and cause 

 a slight swelling, re- 

 sulting in the death 

 of the cane the fol- 

 lowing season. The galls occur usually within 

 two or three feet of the base of the cane. In 

 raspberries no serious damage is done. 



The adult is a rather slender beetle, one 

 third of an inch long, with dark wing covers 

 and a copper-colored thorax or " neck." Eggs 

 are laid in 

 June and 

 July at the 

 base of 

 leafstalks. The grubs pupate 

 within the canes, above the galls, 

 and remain there until the fol- 

 lowing May. 



Before May 1 remove and de- 

 stroy infested canes, including 

 those of wild blackberry near at 

 hand. 



Fig. 320.— Work of 

 the Red-necked 

 Cane-borer. Orig- 

 inal. 



Fig. 322.— Adult of the Red-necked 

 Cane-borer. Enlarged and natural 

 size. Original. 



