136 INSECTS AFFECTING SHADE TREES. 



upon the body. They feed upon the parenchyma of 

 the foliage, leaving the network of veins, and grow 

 quite rapidly, enlarging the web as they develop. 

 By the time they are full grown a single lot of them 

 will destroy the foliage of a good-sized branch, mak- 

 ing it very conspicuous on account of the web-like 

 covering. At this time the larva? are a little more 

 than an inch long (a), with the body densely clothed 

 with yellowish hairs. They now leave their nests 

 and descend to the ground, where just beneath the 

 surface, or under some suitable shelter above the sur- 

 faee, they spin slight, silken cocoons within which 

 they change to the chrysalis state. At the North 

 there is but one brood each year, but in the Southern 

 States there are two. 



Remedies. The webs of this insect are so con- 

 spicuous that it is an easy matter to cut them off and 

 burn or crush the larva?. This is a simple remedy,, 

 and the earlier it is done the better. The pest 

 may also be destroyed by spraying with London 

 purple or Paris green when the larva? are young. 



The Imported Elm Leaf-beetle. 



Get leru ca xa nthomelsena. 



During recent years this insect has been exceed- 

 ingly destructive in many cities of the Eastern States 

 to that loveliest of shade trees — the elm. It has 

 long been known in the Old World, 'having been 

 especially injurious in France and Germany, and 

 is supposed to have been imported into America 



