ECONOMIC ENTOMOLOGY. 61 



Remedies. Spray the trees with the kerosene emul- 

 sion, late in May or early in June, The bark louse has a 

 number of natural enemies, such as the predaceous beetles, 

 the lady-bug, a species of harvest mite, and two true par- 

 asites. 



THE SQUASH BUG. 



(Anasa (Coreus) tristis. Degeer.) 



The females deposit their yellowish brown eggs in June 

 (in the latitude of Illinois), cementing them to the under 

 sides of the squash leaves. The young bugs moult their 

 skins a number of times and at last attain the adult state 

 without passing through the dormant pupal stage. The 

 perfect insects are a rust-colored brown above or rather 



Pig. 64. Squash Bug. (Somewhat enlarged.) 



yellow, so covered by tiny black dots, that it appears to be a 

 rusty black. The color of the under side of the body is yel- 

 low. They are readily known by the odor they emit which 

 resembles that of the banana. 



They live upon the juices of the leaves which they suck 

 up through their beaks causing the leaves to wither and die. 



Remedies. Hand picking of the bugs, and the de- 

 struction of the eggs which are to be found on the under 

 side of the leaves. 



