64. LEAF-BUGS. 
even enter the inside of the galls, and are thus surrounded by 
an abundance of food. By killing large numbers of such in- 
jurious insects, as well as the injurious leaf-hoppers found om 
grass, this little bug becomes our friend. 
Oncognathus binotatus Fab. (The Timothy-grass Bug). 
This rather showy bug has been found from time to time 
sucking the juice of the timothy plant. The insects sometimes. 
crowd in large numbers upon the head of this plant, and can 
cause some injury. In Europe they are sometimes quite de- 
] 
Fic. 53a.—Oncognathus binotatus Fab.: a, female; b, male, enlarged; c, head’ 
from side, still more enlarged. After Insect Life, Div. of Entomology, Dep. of 
Agriculture. 
structive, preventing the seeds of the infested plants from ma- 
turing. Although possessing ample wings, they do not like to 
fly, but try to escape by hiding, which they do very quickly. 
The insect, which is shown in Fig. 53, has the sexes differently 
marked. 
As the insect, in all stages, is also frequently found during 
July along the edges of wheat and oat-fields, it may in future 
perhaps become a more destructive being than it is at present. 
