THE WHEAT-FLY. 
Auruoven several facts in the habits and economy of the wheat-fly 
had occurred to my notice at sundry times since its appearance in 
this vicinity, yet as my leisure for studies of this nature was wholly 
engrossed in other departments of the science of entomology, these 
facts had been observed in too cursory a manner to be of material 
value in preparing an account for the public eye. It has not been 
until the present year, that I have made this and its allied species 
my particular study. And as some few interesting points still remain 
undetermined, ere a perfectly complete history of this insect can be 
given, I should be inclined still to defer preparing a paper upon this 
subject, but that I deem some of the observations already made of 
too much importance to be longer withheld, and am moreover very 
well aware that if no writer ventured to appear before the public 
until his investigations were so complete in every particular that he 
could ewhaust the subject on which he wrote, very little would be 
published, and the world would have but a small fraction of that 
amount of information which it now possesses. 
It is necessary for me farther to premise, that although we have 
two distinct species of wheat-flies, as will be fully shown in the 
sequel of this paper, to wit, the clear-winged wheat-fly (Cecidomyia 
tritici of Kirby) and the spotted-winged wheat-fly, which has hither- 
to remained a nondescript ; yet as nothing is yet known of the 
habits and transformations ot one of these as distinct from the other, 
through the body of this article the common name ‘“‘wheat-fly” will 
be employed for convenience as referring to both these species. 
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