THE TRIBE OF THE EMPERORS 



209 



as a refuge from the heat of the sun and doubtless serves 

 also in concealing the caterpillar from its many enemies. 

 The larva goes out to neighboring leaves when it wishes 

 to feed and only occasionally eats up the leaf of which its 

 tent is made. 

 When this is 

 done it must of 

 course construct 

 another home. 



After some 

 weeks of this 

 sheltered exis- 

 tence the cater- 

 pillar is ready to 

 change to a 

 chrysalis. It 

 leaves the tent 

 and commonly 

 attaches a bit of 

 silken web to the 

 under side of a 

 leaf or branch 

 of its food plant 

 or some other kind of shelter. Here it changes to a 

 chrysalis, to emerge a little later as the beautiful burnt- 

 orange butterfly. There are said to be two broods each 

 season, in some regions, although in others there seems to 

 be but one. The butterflies hibernate in hollow trees or 

 in such other shelters as they may find. 



The full-grown caterpillar (a) is an inch and a half long 

 and of a general grayish color, dotted thickly with slightly 

 elevated points. The chrysalis (6) is suggestive of that 



Goatweed Butterfly: a, larva; b, chrysalis; c, larva! case. 

 (After Riley) 



