University of the State of New York 



New York State Museum 



Frederick J. H. Merrill Director 

 Ephraim Porter Felt State Entomologist 



Bulletin 74 

 ENTOMOLOGY 20 



MONOGRAPH OF THE GENUS SAPERDA 



PREFACE 



In the preparation of this paper all the original descriptions of the 

 various species have been carefully examined, and as many of the 

 types as were in this country have been studied. Most of our species 

 are so well marked that there was little trouble in identifying them, 

 and only tridentata and forms of populnea presented diffi- 

 culties. The first mentioned has a species which resembles it very 

 closely, and the question was, which had been described by Olivier. 

 The original description was so vague that it applied equally well to 

 either; but fortunately Olivier had figured the form described, and 

 this proves beyond doubt that our common eastern borer of the elm 

 is his species. Several forms, which could not be referred to any 

 of our species, were found, one of which presented all the characters 

 of the European populnea, and there is no doubt that it has long 

 been established in California, Oregon, Washington and British 

 Columbia, having evidently made its way into this country through 

 Alaska. 



The writers take great pleasure in acknowledging assistance from 

 the following gentlemen : Dr Henry Skinner and Mr H. W. Wenzel, 

 who employed their kind offices in procuring the loan of specimens 

 from the collections of the American Entomological Society and 

 afforded facilities for the study of material in the Horn collection, 

 Mr Samuel Henshaw of the Museum of Comparative Zoology, who 



