LEPIDOPTERA 



76 



hawk moths by their hairy bodies, and pectinated or 

 feathered antennae. The larvae of the large forms are 



FIG. 70. Photograph of the larva, pupa, and imago of the Catalpa sphinx (Cera- 

 tomia). Natural size. 



called giant silkworms. Polyphemus is the American 



silkworm. 

 The silk of commerce is produced by the domesticated 



silkworm of China (Sericaria mori). In parts of China 



the moths live in a wild state, but in several portions of the 



Old World the in- 

 sect has been domes- 

 ticated. The entire 

 life history of the 

 moth may be ob- 

 served by any school 

 able to secure mul- 

 berry 



FIG. 71. Photograph of a larva of polyphemus 

 (.Teleapolyphemus). Two thirds natural size. 



or osage 



orange leaves. If neither of these trees grows in the 

 locality, two or three white mulberry trees should be set 



