INSECTS INFESTING THE BLACKBERRY. 215 



CHAPTER CXXXI. 



The Blackberry Aphis. (Cal.) 

 ( Sipha ruhifolii. — Thomas.) 



Order, Hemiptera; ) Family, Aphidid^. 



Sub-order, Homoptera ;) • ' 



I i I I I [ M I I I hhl 



The measurements of insects in this work are given in inches and lines. The above cut rep- 

 resents one inch divided into lines and fractions thereof. 



[Living on the underside of the leaves of Ijlackberry bushes, 

 which they puncture with their beaks and extract the sap ; 

 small, black and green or pale green plant-lice. 



The wingless lice are pale green, marked with a darker green, 

 the head tinged with yellowish. The winged lice have the 

 head and thorax black, and the abdomen colored as in the 

 wingless lice. — Professor Thomas. 



Remedies. — Use No. 4, 5, or 7 ; No. 3 will do if No. 4, 5, 

 or 7 cannot be obtained. 



