160 INJtTKIOUS INSECTS 



generally be found on the leeward side of the tree if the 

 wind has been blowing in the same direction for a few 

 days. Tlie cocoons may also be searched for, and many 

 of the moths caught by attracting them towards the light. 

 But the most effective artificial mode of preventing this 

 insect's injuries is to search for and destroy the egg- 

 masses in the winter time when the trees are leafless. 



SUMMARY. 



The Tent-caterpillar of the Forest differs from the 

 common Orchard Tent-caterpillar principally in its egg- 

 mass being docked off squarely instead of being rounded 

 at each end; in its larva having a row of spots along the 

 back instead of a continuous narrow line, and in its moth 

 having the color between the oblique lines on the front 

 wings as dark or else darker, instead of lighter than the 

 rest of the wing. It feeds on a variety of both orchard 

 and forest trees; makes a web which, from its being usu- 

 ally fastened close to the tree, is often overlooked; is very 

 destructive, and is most easily fought in the egg state. 



THE FALL WEB-WORM. 



{Byphantria textor, Harris.) 



The appearance of webs, or "tents," upon fruit and 

 other trees in late summer and early autumn, has caused 

 many to suppose that there was a second brood of the 

 Tent-caterpillar. These late webs belong to a verv dif- 

 ferent insect, which lays lier eggs in a cluster upon a 

 leaf near the end of a twig, and the young caterpillars, 

 like those of the true tent-makers, begin to spin as soon 

 as hatched; and as they feed and spin in company, the 

 web formed by their united efforts soon becomes con- 



