LEPIDOPTERA 



Butterflies 



The seven hundred species of butterflies in North Amer- 

 ica, distributed from Central America to the Arctic Circle, 

 are chiefly of value to man through the pleasure and profit 

 they afford lovers of nature. Two or three species are de- 

 cidedly harmful hi the larval form. The two groups most 

 abundantly represented in the temperate zone are the 

 brush-footed tribe and the swallowtails. 



Brush-footed Butterflies. This group, whose members 

 have imperfect fore legs, includes a number of common 



FIG. 60. Photograph of two larvae and two adults of the Monarch butterfly. 

 One third natural size. 



large forms. The milkweed butterfly or monarch (Anosia plex- 

 ippus) is quite as conspicuous as its black, white, and yel- 

 low-banded larva and bright green gold-spotted chrysalis 



