106 SCHOOL ENTOMOLOGY 



and liinfl wings, clear. Clear-wing moths, Se- 

 siidos. 

 CC. Wings entirely clothed with scales. 



D. Size uniformly small to very small. Wings usu- 

 ally narrowed; hind wings nearly as large as the 

 fore wings. Micro-Lepidoptera. 

 E. Wings fringed with delicate hairs. Size usu- 

 ally very small. Tineina. 

 EE. Wings not fringed. Size usually larger. Tor- 



tricina and Pyralidina. 

 DD. Size usually larger than the Micros* 



E. Size larger than medium; body stout. Front 

 wings long and rather narrow; hind wings 

 small. 



F. Outer margin of front wings long. Car- 

 penter moths. Cossidce. 



FF. Outer margin of front wings short. Hawk- 

 moths. Sphingidce. 



EE. Moths with size variable but usually medium. 

 Wings usually of normal proportions. 



Several common and important families 

 belong here. These can be distinguished 

 further only by wing-venation. 



Notodontidoe. 

 ArctiidcB. 

 NoduidcK. 

 Liparidce. 

 Agaristidce, etc. 

 BB. Moths without a frenulum on the hind wings. 



C. Size medium to very large. Wings usually rather 



broad. Giant silk-worms, etc. Saturniina. 

 CC. Size smaller. Bodies stout and hairy. Tent-cater- 

 pillar, etc. LasiocampidcB. ( 



