CONTENTS 



PAGE. 



iPreface : 4 



Oiitliiie 4 



JElm-leaf beetle in New York state 5 



Bad leputation of its family 5 



Inaction means death to the elms 5 



Distribution 6 



Description 8 



Lif e-bistory 9 



Number of generations 13 



Habits of beetle and larvae 13 



Species of elms attacked 15 



An associated insect 16 



IDJ uries and characteristics 16 



Description and life-history 17 



Means of distribution -■ 18 



Secondary attacks by insects 18 



Natural enemies of elm-leaf beetle 20 



Remedies 21 



Cost of spraying elms 21 



Proper apparatus 22 



Time and manner of spraying 24 



A palliative measure 26 



Useless measures 27 



Remedies for associated insects 28 



Bibliography 29 



Explanation of plates 34 



