[SFXTS INFESTIX( 



BLACKBERRY. 



CHAP. 



The Blackliem- Cane-borer (Oberca tri- 



ptinctala) 130 



The Blackberry A]^his(S>pha ruhifolii) 131 



The following insects also infest the Black- 

 berry : 

 The Raspberry-root Borer (.-J-^giria mbi). 



The Ras])beiTy Borer (Agnhu< nificoUix). 

 The liose Scale {Dia^pix roxw). 

 The Snowy Tree Cricket (<J-jCan(hux nivciU). 

 The Ked-humped Caterpillar (Xotoilunta cott- 



cinna). 

 The Raspberry- Span-worm (Aploile^ n(l>ivora). 

 The Raspberrj' Aphis (Sipltonopltora rubi). 



CHAI'TEK ("XXX. 



The Blackberry Cane-Borer. 



(Obcrea tripn itrtaia. — Fabrit'ius.) 

 Order, Coleopteka ; Family, Ckkambycid.15. 



[Tiiving within the stems of l)lackberry and raspl )errv bushes ; 

 a yellow fo(jtless grul), transforming into a slender Idaek long- 

 horned beetle, having the top of the thorax yellowish, and usu- 

 ally marked with two or three black dots.] 



Fig. 201. — Blackberry Ci}ne-l)orer — colors, black 

 and yellowish. 



The perfect beetles (Fig. 201) appear in ]May or 

 •June. The female beetle, after gnawing two rings 

 around the growing cane, punctures the latter be- 

 tween the girdled rings, and deposits therein a single egg ; the 

 grub which is produced from this egg burrows into the central 

 pith, where it lives until reaching its full growth, when it 

 forms a cell in its burrow, and soon afterward assumes the 

 pupa form; in due time the pupa is transformed into the per- 

 fect insect, or beetle, Avhich gnaws its way out of the burrow. 



Remedies. — Use Nos. GO and (5(5. 



