HEMIPTERA. 



119 



with the larvae and pupae, and an instructive collection 

 can be made at this season, illustrating the different 

 stages in the development of the insect, and also the 

 origin and growth of the wings. The body of the 

 larva (Fig. 68, f ) is light brown, excepting the head, 

 which is dark and chi- 

 tinous, as shown in the 

 figure. The prothorax 

 ((^') does not overlap 

 the ring behind it 

 (marked <^"). The meta- 

 thorax (//") is in the 

 form of a narrow ring. 

 The first ring of the 

 abdomen (r') is simple, 

 and smaller than the suc- 

 ceeding abdominal rings. 



The working anten- 

 nae, sucking-tube, and legs are dark and horny, con- 

 trasting strikingly with the light color of the thorax 

 and abdomen. 



By examining different stages of the pupae (Fig. 

 69, f, one stage), it will be found that the thoracic 

 rings of the larva undergo a greater change than would 

 appear at first sight. The larger portion of the dorsal 

 part of the ring marked ^" in Fig. 68 becomes the 

 mesothoracic scutellum (Fig. 69, /r), and the question 

 arises. What exists in the larva that can develop into 

 the large, horny scutum (Fig. 65, f) of the adult? 

 To answer this question, one must examine a number 

 of pupae. It is then seen that the forward part of ^" 

 (Fig. 68) enlarges, while the prothorax grows back- 



Fig. 68. 



