152 NATURE SKETCHES IN TEMPERATE AMERICA 



well depicted that no further description is necessary, except 

 that in the darker portions there is an olivaceous tinge instead 

 of brown, as in the younger larvae. 



The cresphontes chrysalis is protectively colored like old 

 wood, or dead leaves, or a pale green, depending somewhat 

 on the environmental conditions. There are two broods of 



The Caterpillar of Papilio cresphontes on its food plant, the 



three-leaved hop tree. Its protective form and markings 



are well shown. Photograph by Dr. James Walker. 



larvae each year, the second broods being found in Michigan 

 in the latter part of August and early September. The familiar 

 adult butterfly is one of the handsomest species of the swallow- 

 tails. In the south, where this large and "beautiful butterfly is 

 common, its larvae ravage the orange groves. Here the peculiar 

 appellation "orange-puppy" is given to it, perhaps from a 

 fanciful resemblance to a young canine. 



