IS 



>bablv due to an irritation in the tissues of the plant 



are lined with a thick growth 



pr< >l>al>l\ 

 caused 1>\ 



it s feeding. The\ 



of vci'\ 



line hairs ( Fig.' 



Fig. 46. Section 

 through gall made by 

 leaf-blister mite on 

 cotton leaf. 



Great!)/ enlarged. 

 (From N.Y. 

 Enlom. Soc.) 



16), among which 

 the mites live. The leaf-blister mite is 

 almost microscopic in size. It is so 



small thai even when very abundant 

 the individual mites can scarcely be 

 seen, even with the aid of a good magni- 

 fying fflasS. The amount 

 done by the pes 

 severe, bu1 the loss Prom this cause has 

 been less since planters and others have 

 become more familiar with it. 



ol injury 

 is sometimes very 



The leaf-blister mite first occurred 

 as a pest of cultivated cotton in 

 Montserrat, in 1903. It was soon 

 afterward found to be attacking cotton, 

 both wild and cultivated, in all the other islands of the 

 Leeward and Windward groups. It has not, however, made 

 its appearance in Barbados.* 



Fig. 47. Cotton leaf attacked by leaf-blister mite. 

 Reduced. {Original ) 



* Since this pamphlet has been in the press the leaf-blister mite has 

 been found on cotton in Barbados (Feb. 1912). 



