INSECTS. 



199 



but the stalk and principal veins, and passing from leaf to 

 leaf thus strip whole branches of their foliage." 



Fig. 83 shows a leaf as it appears with the caterpillars 

 at work. The smaller ones have eaten out only the green 

 portions of the leaf, leaving all the fine branching veins, 

 while the larger ones have eaten all except the coarse, 



Fig. 88. Larvae of the Procria Americana feeding on the leaf. 



