leaf of walnut tree attacked by mite, aceria erineus

aceria agriculture animal animals attack attacked background biology blister blisters botany brown bump bumps cavities cavity close closeup collage collection colony cut cutout damage damaged deform deformation destroy destruction detail disease distort distortion eat eating erinea erineus feed feeding food gall galls gardening green horticulture ill illness indoor indoors infected infestation insect insecticide insects invasion isolated leaf leaves lesion lesions malformation many mite mites nature nobody out parasitic pest pests plant plants puncture punctures spot spots tree walnut white wither