368 
THE STUDY OF INSECTS. 
The third species, Megathymus neumoegeni (M. neu-mce- 
gen'i), occurs in Arizona. 
Family HESPERIID^E (Hes-pe-ri'i-dae). 
The Common Skippers . 
The family Hesperiidas includes all skippers found in 
the United States except 
im, the three species de- 
lv, 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¬ 
ber of this family. 
Fig. 449.—Wings of Epurgyreus tityrus. TllC larV3C of the 
Common Skippers pre¬ 
sent a very characteristic 
appearance, having large 
heads and strongly con¬ 
stricted necks (Fig. 450). 
v Fig. 450 .—Epargyrem tityrus , larva. 
They usually live con¬ 
cealed in a folded leaf or in a nest made of several leaves 
