4 FARMERS BULLETIN 831. 



the injury is similar to that on cotton, although it is unusual for 

 most plants to show the red blotching. The feeding is done by 

 means of sharp, slender, lance-like mouth parts which are thrust 

 well mto the leaf, usually on the under surface. 



Injury results from the extraction by the red spiders of the juices 

 of the plant leaves. It is plam, therefore, that the mites can not be 

 killed by poisons sprayed onto the leaves, to be devoured in feeding, 

 but must be attacked by sprays which kill by contact. 



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