368 



THE STUDY OF INSECTS. 



HI,, 



II 



The third species, Megathymus neumcegeni (M. neu-mce- 

 gen'i), occurs in Arizona. 



Family HESPERIIDAE (Hes-pe-ri'i-dae). 

 The Common Skippers. 



The family Hesperiidae includes all skippers found In 



the United States except 

 j the three species de- 

 v, scribed above as the 

 /v, Giant Skippers. In ad- 

 dition to the differences 

 indicated in the table 

 (p. 365), it may be said 

 that the males in the 

 Hesperiidae lack the pecu- 

 liar thickening and split- 

 ting apart of the branches 

 of vein VII of the fore 

 wings characteristic of 

 the Giant Skippers. But 

 there exists instead in the 

 males of nearly all spe- 

 cies peculiar scent-organs, 

 which are described later. 

 Figure 449 represents the 

 venation of a male mem- 



VII, 



VII. 



XI 



IX 



ber of this family. 

 The larvae of 



the 



FIG. 449. Wings of Epargyreus tityrut. 



Common Skippers pre- 

 sent a very characteristic 

 appearance, having large 

 heads and strongly con- 

 stricted necks (Fig. 450). 



.. FlG- 450. Epargyrem tityrus, larva. 



They usually live con- 

 cealed in a folded leaf or in a nest made of several leaves 



