Bui. 416, U. S. Dept. of Agriculture. 



Plate IV. 



Red-Spider Injury to Various Hosts. 



Fig. 1.— Arborvitse tree heavily coated -B-ith mite -n-ebbing. Fig. 2.— A branchlet 

 from the tree shown in figure 1, showing enshrouding web. Fig. 3.— Dahlia plant 

 with leaves distorted and shriveled thi-ough mite activity. Fig. 4.— Bed of violets 

 dead to the groimd from excessive infestation. Fig. 5.— Blanched sweet-pea foliage, 

 also snowmg webbing. (Original.) 



