THE FALL ARMY WORM, OR ‘‘GRASS WORM.”’ 11 
caterpillar, soon killing it by devouring its internal organs and tissues. 
Another of these flies (fig. 9) lays exceedingly tiny eggs on the 
Fic. 9.—Archytas piliventris, a fly parasitic on the fall army worm. Greatly enlarged. 
food plant of the fall army 
worm, which are swal- 
lowed by the unsuspecting 
caterpillar and hatch with- 
in its body, the maggots 
thereupon devouring the- 
worm at their pleasure. 
Soldier bugs are numerous 
in some portions of the 
fall army worm’s range. 
One of these, known as the 
spined soldier bug (fig.10), 
kills and devours the cater- 
pillars by piercing them 
with its strong beak and 
sucking out the liquid con- 
tents of their bodies. Both 
the old and young (fig. 
11) bugs have this habit 
(Original. ) 
and are active enemies of Fic. 10.—The spined soldier bug (Podisus maculiven- 
the fall army worm. 
tris), an enemy of the fall army worm: Adult bug. 
Greatly enlarged. (Original.) 
