CONNECTiqUT 



iGEICOLTUEAL EXPERImEHT SlfTIOH 



NE\V HAVEN, CONN. 



BULLETIN 155, MAY, 1907. 



ENTOMOLOGICAL SERIES, No. 14. 



The Elm Leaf Beetle 



CONTENTS., 



Page. 



The elm leaf beetle 3 



History and distribution in America 3 



Life history and habits 5 



Description 7 



Effect upon the trees 8 



Food plants 8 



Number of generations 9 



Natural enemies 9 



Remedies 10 



Spraying with poison 10 



Destroying the pupae 12 



■ Destroying the adult beetles 12 



Outfit for spraying elm trees 12 



Summary 13 



The Bulletins of this Station are mailed free to citizens of Con- 

 necticut who apply for them, and to others as far as the editions 

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