New York State Museum Bulletin 



Entered as second-class matter November 27, 1915, at the Post Office at Albany, New York, 



under the act of August 24, 191 2 



Published monthly by The University of the State of New York 



No. 186 



ALBANY, N. Y. 



June 1, 1916 



The University of the State of New York 



New York State Museum 



John M. Clarke, Director 

 Ephraim Porter Felt, State Entomologist 



31st REPORT OF THE STATE ENTOMOLOGIST 



ON 



INJURIOUS AND OTHER INSECTS 



OF THE 



STATE OF NEW YORK 

 1915 



PAGE 



Introduction 7 



Injurious insects 15 



Codling moth 15 



Chrysanthemum midge 51 



White grubs 55 



Grasshoppers 57 



Mosquito studies 63 



Biological Observations. 



E. P. Felt and H. H. Stage 65 



Oil compound and young trees 71 



Notes for the year 75 



Fruit tree insects 76 



PAGE 



Forest tree insects 84 



Grass insects 86 



Miscellaneous 88 



Publications of the Entomologist 89 

 Additions to collections, October 



16, 1914— October 15, 1915.. 93 



Exchange 100 



Addenda ..., 100 



Appendix : A study of gall midges 

 IV 101 



Explanation of plates 173 



Index 209 



