THE INSECT WORLD. 



253 



bright yellow in color, with transverse black bands. Towards 

 the South and West, occurring rarely, however, as far north as 

 Canada, we have a form of the female which is black, but may be 

 distinguished by its large size from our normally black species. 

 The caterpillar is green, and distinguished by having two black, 

 eye-like spots on the anterior segments. It feeds on a number 

 of different plants, but does not become economically important. 



In Florida, P. cresphontes is abundant, and its caterpillar is 

 known as the ' ' orange dog, ' ' from its peculiar appearance and 



Fig. 271. 



The orange dog, caterpillar of Papilio cresphontes, with osmateria, or scent-organs, 

 extended ; the detached figure shows the anterior segments normally retracted. 



habit of feeding upon orange-leaves. The butterfly is even larger 

 than the tur?ms, and is black, with a broad diagonal band of 

 contiguous yellow spots extending from the tip of the fore-wings 

 towards the base, reaching the inner margin very near to the base 

 of the hind wings. There is also a band of yellow spots near the 

 outer margin, which are especially prominent on the hind wings, 

 and a yellow spot occupies the centre of the broad, lobed tail. 

 The caterpillars are prominent, as already stated, and orange- 

 growers consider them among the greatest troubles of the young 

 trees, especially in the nurseries, where a single specimen may 

 defoliate a shoot in a little time. Hand-picking on small trees is 

 a feasible and satisfactory remedy, and another is to capture the 



