28 



INJTJKIOUS INSECTS 



Fig. 21. 



SOUTHERN CABBAGE BUTTERFLY.- 



-FEMALE. 



a soft worm, of a greenish-blue color, with four longitu- 

 dinal yellow stripes, and covered with black dots. When 

 newly hatched it is of a uniform orange color with a 

 black head, but it becomes dull-brown before the first 

 moult, though the longitudinal stripes and black spots 

 are only visible after said moult has taken place. 



The chrysalis (fig. 

 20, .), averages 0.65 

 inch in length, and 

 is as variable in 

 depth of ground-col- 

 or, as the larva. The 

 general color is light 

 bluish-gray, more or 

 less intensely speck- 

 led with black, with 

 the ridges and promi- 

 nences edged with buff or with flesh-color, and having 

 larger black dots. 



The female butterfly (fig. 21), differs remarkably from 

 the male represented at figure 22. It will be seen, upon 

 comparing these fig- 

 ures that the female 

 is altogether darker 

 than the male. This 

 sexual difference in 

 appearance is purely 

 colorational, however, 

 and there should not 

 be the difference in 

 the form of the wings 

 which the two figures 

 would indicate, for the hind wings in our male cut are 

 altogether too short and rounded. 



This insect may be found in all its different stages 

 through the months of July, August, and September. It 



Fig. 22. 



SOUTHERN CABBAGE BUTTERFLY. MALE. 



