No. 4.] 



THE ARMY W0R:M. 



287 



Northbridge. 



Norton. 



Nor well. 



Oak Bluffs. 



Pembroke. 



Phinouth. 



PljTiipton. 



Raj^nliam. 



Rochester. 



Rockland. 



Rockport. 



Salisbury. 



Scituate. 



Seekonk. 



Somerset. 



Swansea. 



Taunton. 



Tisbury. 



Topsfield. 



Wareham. 



West Boylston. 



West Bridgewater. 



Weymouth. 



"WTiitman. 



Worcester. 



Life and H.\bits. 



The life history of this insect varies in different parts of 

 the country. In the south Dr. L. O. Howard considers that 

 there may be as many as six generations a year. In New 

 England the evidence indicates two generations, although 

 possibly there may be but one in some portions of Massa- 

 chusetts, this point not having been conclusively settled. 

 Under these circumstances only a general outline of the 

 life of the army worm can be given. 



It appears probable that in Massachusetts these insects 

 pass the winter as partly grown caterpillars, which resume 

 their feeding the following 

 spring and upon reaching full 

 size go a few inches into the 

 ground and there transform 

 into dark brown pupte (Fig. 

 1), in which condition they 

 remain for two or three weeks. 

 At the end of this period the 

 insects have changed to moths 

 which escape from the ground 

 and fly at night, laying eggs 

 for the next generation. The 

 moths (Fig. 1) spread about 

 an inch and a half and are 

 rather uniformly brownish or reddish brown, with a single 

 small white spot near the center of each fore wing above 



Fig. 1. — Adult army worm motli; 

 eggs in grass sheath ; pupa. ( From 

 Report of United States Depart- 

 ment of Agriculture, 1879.) 



