The Moths and Butterflies 



421 



and exquisite symmetry of curving outlines. It expands 4^ inches, and 

 ranges over the whole country. The larva is rather like that of the polyphe- 

 mus-moth, being clear, pale bluish green with a pale-yellowish stripe on 



FIG. 605. The polyphemus-moth, Telea polyphemus, and cocoon. 

 (After Lugger; reduced about one-fourth.) 



each side of the body; each segment bears about six small purplish or rosy- 

 tinged pearl tubercles; at the tip of the body are three brown spots edged 

 with yellow. It feeds on hickory and walnut, on other forest-trees, and 



FIG. 606. Larva of polyphemus-moth, Telea polyphemus. 

 (After Dickerson; natural size.) 



makes a rather thin but compact cocoon of silk and leaves. 



In the eastern states the Asiatic ailanthus-worm moth, Philosamia 

 cynthia, expanse 5 inches, with angulated wings, olive-brown ground-color 



