OTHER MEMBERS OF THE CLASS — INSECTA 179 



The butterflies are perhaps better known than the 

 moths, because they are more brihiantly colored, as a rule, 

 and because they 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 

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



Fig. 121. — Swallowtail buttertiy. 



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, but the pupa of a moth is usually 

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

 with leaves. The wings of both moths and butterflies 

 are clothed with scales, and they all have a complete meta- 

 morphosis, while the mouth parts of almost all are foi'med 

 for sucking. 



