CONTRIBUTIONS TOWARD A MONOGRAPH OF 
THE AMERICAN ALEURODID.l:. 
By A. L. Quaint ance. 
INTRODUCTION. 
The writer's attention was called to this much neglected family of 
Homopterous insects about four years ago by Prof. T. D. A. Cockerell, 
since which time considerable material has been collected, or sent in 
by correspondents, and during the past year I have had the pleasure, 
through the kindness of Dr. L. O. Howard, of studying the collection 
of Aleurodidae of the Division of Entomology of the United States 
Department of Agriculture. A considerable number of species have 
been met with that are undescribed, several of which are characterized 
in the present paper. So far as I have been able to ascertain, all 
American species of Aleurodidae are indicated in the following pages ; 
Aleurodes vaporariorum is included in this list ; although originally 
described from Europe, it has now become quite common in green- 
houses, in various parts of the eastern United States at least. In all 
cases reference is made to the original description of a species, and to 
such other references as are of any importance from a systematic 
standpoint. From a study of this literature it is at once apparent 
that the as yet meager study of American Aleurodidae has been, for 
the most part, done during recent years. In the United States, for 
example, there were but three species recorded previous to 1884. 
Forbes, in 1884:, described from Illinois Aleu radix accrix, which, how- 
ever, should now be known as forbe&ii Ashmead, since ace? v is is pre- 
occupied by a European species. 1 In 185)3 Riley and Howard described 
Aleurodes citri, previously briefly described by Ashmead in the 
1 Monograph N. Anier. Proctotrypidiv, Bui. 45, U. S. Nat. Mus., p. 294. 
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