Saturniidae 



leucince. These subfamilies may be discriminated by the help of 

 the following Key: 



Hind wings with one distinct internal vein. 

 Discal cell of both wings open 

 Discal cell of both wings closed 



Hind wings with two distinct internal veins 



Attacinae. 

 Saturniinae. 

 Hemileucmte. 



FIG. 36. Philosamia cynthia. 



a. Eggs; b. Larva; c. Cocoon; d. Pupa; e. Moth. 

 (After Riley.) 



81 



