University of the State of New York 



New York State Museum 



Frederick J. H. Merrill Director 



Ephraim Porter Felt State entomologist 



Bulletin 57 



ENTOMOLOGY 15 



ELM LEAF BEETLE 



NEW YORK STATE 



PEEFACE 



This bulletin appeared in June 1898 and as the first edition 

 is practically exhausted, a revision embodying the more essen- 

 tial facts observed since then has been prepared in order to 

 meet the demand for information concerning this deadly enemy 

 of our elms, which is still extending its range in this state. 

 This beetle has abundantly demonstrated its injurious pov^ers 

 in the vicinity of Albany, and in turn the feasibility of control- 

 ling it at a very reasonable expense has been proved. 



The life history and habits of this beetle have been given 

 somewhat in detail because unless they are thoroughly under- 

 stood it is very easy to adopt means that are futile or only 

 partially successful. In order to give the bulletin a more prac- 

 tical value, short accounts have also been included of three 

 other insects, which, working with the elm leaf beetle, have 

 aided greatly in ruining many noble elms. 



In the portion devoted to remedies prominence has been given 

 to the cost of spraying per tree, the proper apparatus and the 

 time and manner of application. It is surprising to see what 

 mistakes some make in dealing with insects and how methods 

 of no value are clung to. To offset this tendency, two of the 

 more common fallacies are mentioned and their futility shown. 



E. V. Fklt 



Albany N. Y. January 11)02 



