New York State Museum Bulletin 



Entered as second-clus matter November 37, 191S. at the Post Office at Albany, N. T.> 

 under the act of August 34, 1913. Acceptance for mailing at special rate of postage 

 provided for in section 1103, act of October 3, 1917, authorized July 19, 1918. 



Published monthly by The University of the State of New York 

 Nos. 231, 232 ALBANY, N. Y. March-April 1920 



The University of the State of New York 

 New York State Museum 



John M. Clarke, Director 

 Ephraim Porter Felt, State Entomologist 



THIRTY-FOURTH REPORT OF THE STATE 

 ENTOMOLOGIST 



1918 



Dr John M. Clarke, Director of the State Museum 



I have the honor to present herewith my report on the injurious and 

 other insects of the State of New York for the year ending September 

 30, 1918. 



The season of 19 18 has presented many features in common with 

 the abnormal spring and summer of 1 91 7. The rainfall in the western 

 part of the State was not so great as last year and the injury then 

 so generally attributed to the seed corn maggot was much less preva- 

 lent, and limited very largely to the wetter ground. The develop- 

 ments of both last year and this have shown that the seed corn maggot 

 problem is largely a question of methods, the depth of planting and 

 drainage being the more important factors and the insect injury 

 largely a consequence of unfavorable conditions. 



The apple tent caterpillar was notable for its absence in most sec- 

 tions of the State, particularly in portions of Dutchess county. 

 The late leaf feeders, such as the red-humped apple worm and the 

 yellow-necked apple worm were, as last year, exceptionally abun- 

 dant, and there has been even more severe damage in Rensselaer and 

 Columbia counties in particular. The fall webworm, the hickory 

 tussock moth caterpillar and some related species were also uncom- 

 monly numerous and destructive. 



Fruit tree insects. Reports from areas infested by the recently 

 established apple and thorn skeletonizer indicate a moderate abun- 



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JUL 7 ''"' 



