BULLETIN 964, U. S. DEPARTMEITT OF AGETCULTURE. 



each field was found to be quite uniform excepting along the fences, 

 where the plants were most seriously affected, leaves being discolored 

 and dropping off, and the plants dying in frequent instances. 



It was observed that the injury caused to alfalfa by Ealticus citri 

 very closely resembled that of the red spider {Tetranycfius Mmacu- 

 latus Harv.) . 



All the cereal and forage and truck crops, wild mulberry trees, 

 peach trees, and a large number of weeds, including the briar and 



Fig. 3.— At the right, norma] healthy leaves of red clover. At the center and left, leaves seriously af- 

 fected by the garden flea-hopper. 



species of the mint family, were found infested with this insect. 

 More noticeable damage, however, was shown by alfalfa, cowpeas, and 

 clover than by other growing crops. 



DAMAGE TO ALFALFA. 



The injury which is inflicted on alfalfa and other plants is caused 

 by both adults and nymphs. Damage is done by means of their 

 sharp pointed mouth-parts which are inserted into the plant tissues. 

 The short chitinized beak is thrust through the surface of the leaf or its 



