HOW TO KNOW THE INSEQS 



known to occur In Iowa but doubtless will, eventually. Spread of 

 wings 25-30 mm. (From U.S.D.A.) 



These are small to medium sized moths. The family is a large 

 one, with wide variation in form and markings. A number of 

 species are particularly destructive. 



13b Not as in 13a 14 



14a Very large broad-winged, heavy-bodied moths. Many with 

 transparent windows or eye spots (a) in wings; often with 

 feathery antennae. (The Royal Moths and the Giant Silk-worm 



Moths) Fig.191.Fami ly 11, SATURN I I DAE 

 Fig. 191. Tropaea luna L. The Luna 

 Moth. 



Wings delicate, light green; front 

 margin of front wing bro^mish purple. 

 Each wing has a transparent eye spot. 

 Body and legs white. This is thought 

 by many to be our most beautiful 

 moth. Expanse of wings 75-90 mm. 



The Giant Silk-worm moths have 

 heavy bodies and hairy wings. They 

 have feathery antennae, those of the 

 males being broader than those of 

 the females. The wings frequently 

 have transparent window-like spots. 

 The larvae feed on the leaves of 

 different species of trees but are 

 not ordinarily of sufficient abun- 

 dance to do serious damage. 



Figure 191, 



14b Not as in 14a. 15 



15a Vein running along lower side of 

 discal cell of front wing, with 

 three branches, (a) Fig. 192. ... 16 



Figure 192, 



15b Vein running along lower side of 

 discal cell of front wing with four 

 branches, (a) Fig. 193 17 



Figure 193. 



16a Hairy moths with heavy bodies and femora covered with long 

 hairs. (The Prominents) Fig. 194. 



Family 19, NOTODONTIDAE 



94 



