[Reprinted from Journal of the New York Entomological Society, Vol. X., 



No. 2, June, J 902.] 



A REVISION OF THE NORTH AMERICAN 

 SPECIES OF THE GENUS CHOREUTIS. 



By W. D. Kearfott. 



These exquisite little creatures with their wealth of silver and 

 metallic scales have always been of more than ordinary interest to me, 

 and when I had the good fortune to breed a long series last summer, 

 the subsequent efforts to identify them aroused an additional interest 

 in the literature on the subject, of which this paper is the result. 



I took a number of my bred specimens to the National Museum 

 and compared them with all of the North American and European 

 species there but could find none that were the same as mine. I then 

 forwarded a pair to Lord Walsingham and another pair to Mr. 

 E. J. Meyrick. Their replies, which I quote below, indicated 

 that ray species raight be new and also raised the question whether 

 the true bjerkatidrella Thunb., and its var. pretiosana Dup., which 

 have so long been on our lists, really do occur in the United 

 States. 



The investigation of the latter question was considerably more than 

 I had bargained for, and for a novice seemed like presumption so soon 

 after the revision of this group by Dr. Dyar and Professor Fernald, 

 in the Canadian Entomologist. 



I was fortunately, however, in possession of a goodly number of 

 specimens from widely separated parts of North America, and as a 

 primary requisite I obtained from Drs. Staudinger and Bang-Hass 

 long series of the European bjerkandrella and pretiosana, as well as all 

 other available European species of this genus. I was rather alarmed 

 to find that, while closely allied, none of the European forms compared 



