238 



LEI'IDOPTERA 



the tent for protection when not feeding. In this they (Hffer 

 from the fall web worm. They have fairly distinct times of 

 feeding and of resting, the feeding being perhaps more com- 

 monly done in the early, cooler part of the day, perhaps more 

 or less at night, and protection in the web being sought in 

 the middle of the day or the hottest portion. They get their 

 growth pretty rapidly, requiring only a few weeks in early 

 spring for their development, and then they scatter mainly 



Fig. 183. — Stages of the apple-tree tent caterpillar: a, egg mass; b, 

 larva; c, pupa; d, cocoon; }, female moth; ,r, male moth. About 

 natural size. (After Quaintance, Div. Ent., U. S. Dept. Ag.) 



from the nest and construct cocoons in all sorts of protected 

 places, under bark, under boards, on fence posts, under 

 ground, etc. The cocoon is rather irregular, not very com- 

 pact and within the cocoon they change to pupae. This 

 pupation or change to the pupal stage takes place soon after 

 the cocoon is formed. They remain in the pupal stage only 

 about three weeks and then issue as moths, coming out in 

 the summer. They do a great deal of damage which is rather 

 more pronounced because of the early attack on the foliage 



