INFESTING FIELD CROPS. 
1, WHEAT, 
AFFECTING the stalk. 
Externally on tbe stalks sucking their juices, turning the field white in spots 
where they are numerous; after harvest migrating to corn; a small narrow 
coal-black bug, with closed white wings, having a black dot on the middle 
of their outer edge. 
The Chinch duo, Micropus leucopterus, Sat. (Plate 4, fig. 2, and 2a, the 
same magnified.) 
This is unquestionably one of the most pernicious insects 
which we have in the United States. The locusts of Utah and 
California are the only creatures of this class which exist within 
the bounds of our national domain, whose multiplication causes 
more sweeping destruction than does that of this diminutive and 
seemingly insignificant insect. Although it has never appeared 
as a depredator in this section of the Union, and was for a long 
time supposed not to occur to the north of the celebrated “ Mason 
and Dixon’s line,” I have at different times met with three 
specimens of it in our own state, and Dr. Harris found it once 
in Massachusetts. As it exists in our midst, therefore, we have 
reason to fear that peculiar seasons or other favorable circum¬ 
stances may at some future time arrive, which will cause it to 
multiply and become as destructive here as it now is in some of 
our sister states south and west. Hence its history is as deeply 
interesting to us as that of any other insect within our borders. 
And as enquiries respecting its correct name, its habits and 
depredations are so frequently appearing in our agricultural 
papers, I probably cannot render a better service than to present 
these topics as fully and definitely as I am enabled to do from 
the information which I have gathered. 
