Wolly mite

This mite lives under the tissues of the epidermis of the leaf and causes irrigation due to  which a growth of dense whitish hair arises on both the surface of leaf. The attacked leaves curl  and  become  hard  and  crisp.  This  is  a  major  problem  in  heraceum  cotton  and  perennial  cotton.  Heavy injury leads to shedding of leaves and bolls.