OTHER MEMBERS OV THE CLASS — INSECTA 179 



The IjutterHies arc jxn-haps better known than the 

 niotlis, because they arc more brihiantly colored, as a rule, 

 and because thej' fly in the daytime, while moths for the 

 most part fly at night. Moreover, the body of a butterfly 

 is slender, while the body of a moth is stouter and more 

 roljust. The wings of a butterfly, when in repose, are held 



Fig. 121. — Swallowtail butterfly. 



vertically, but those of a moth are folded, rooflike, over 

 the abdomen. The pupa of a butterfly is naked and is 

 known as a chrysalis, Init the pupa of a moth is usually 

 inclosed in a cocoon of silk, which, in turn, may be wrapped 

 with leaves. The wings of both moths and butterflies 

 are clothed with scales, and they all ha\-e a complete meta- 

 morphosis, while the mouth parts of almost all are formed 

 for sucking. 



