288 Agricultural Experiment Station, Ithaca, N. Y. 



caterpillar wears is quite conspicuous, thus often revealing its 

 presence to even the casual observer. 



The Caterpillar and its Curious Case. — The caterpillars are their 

 own tailors and each has two suits during its life time. The first 

 suit or case is made in the fall, when the caterpillar is about two or 

 three months old ; it is worn all winter and until about May 15th of 

 the next spring. As this case is quite small, it is often overlooked 

 by the fruit grower. This phase of the insect's life is discussed in 

 detail further on under the account of its life history. 



About May 15th the half -grown caterpillar finds that its winter suit 

 is too small, and proceeds to make a new and larger summer case ; 

 we caught the little tailor at this work one morning, and a photo- 

 graph of the interesting process is presented further on, -with an 

 account of the operation. This second case presents a striking 

 resemblance to a miniature cigar, both in its shape and color. In 

 May or June one or more of these curious cigar-shaped cases may 

 often be seen projecting at various angles from a leaf (Fig. 55) or 

 from a young fruit (page 281) ; and as the figures show, they are 

 quite conspicuous objects. They are sure to arouse one's curiosity, 

 especially when, after watching one for a few minutes, it is seen to 

 move off to another part of the leaf, A careful examination of one 

 of these moving, cigar-like objects will reveal its inhabitant, a 

 dark orange-colored, black-headed caterpillar scarcely one fifth of 

 an inch in length. When disturbed, the little creature retreats 

 into its cigar-shaped case, and can be induced to come forth only 

 by either tearing open its case or by continued urging from the 

 rear. As described in detail further on in discussing its life history, 

 the insect passes the remainder of its life until the emergence of the 

 adult in this cigar-shaped case. 



The Adult Insect. — The moth, shown nearly four times natural 



size in Fig. 56, is a very delicate and 

 pretty steel-gray object. During 

 the day it rests on a leaf with its 

 heavily fringed wings folded closely 

 over its abdomen and its long slender 

 antennne placed close together and pro- 

 jecting straight forward from its head. 



56.— Adult insect, about four times ~,t , 



natural size. ^hcy may bc sccu on the leaves from 



about June 15th to July 15th. 



