Bul. 416, U. S. Dept. of Agriculture. 
PLATE IV. 
RED-SPIDER INJURY TO VARIOUS HOSTS. 
FiG.1.—Arborvitz tree heavily coated with mite webbing. Fi¢.2.—A branchlet 
from the tree shown in figure 1, showing enshrouding web. Fig. 3.—Dahlia plant 
with leaves distorted and shriveled through mite activity. Fic. 4.—Bed of violets 
dead to the ground from excessive infestation. F1G. 5.—Blanched sweet-pea foliage, 
also showing webbing. (Original.) 
