New York State Museum 



16TH REPORT 



STATE ENTpMOLOGIST 1900 



OFFICE OF STATE ENTOMOLOGIST 



Albany, 15 Oct. 1900 



To the Regents of the University of the State of New York 



I have the honor of presenting herewith my report on the injurious 

 and other insects of the state of New York for the year ending Oct. 15, 

 1900. 



General entomologic features. The excessive depredations of last 

 year by the forest tent-caterpillar, C 1 i s i o c a m p a disstria Hiibn., 

 were somewhat mitigated in 1900, though the insect was present in some 

 orchards in considerable numbers. It is a pleasure to record that the 

 energetic measures employed by various cities and towns last year bore 

 fruit this season in the comparative immunity of these places from the pest. 

 The elm leaf beetle, Galerucella luteola Mull., has been kept well 

 under control in Albany and Troy by intelligent and systematic spraying, 

 showing that it is practicable to prevent serious injury by this pest. It 

 has established itself in several localities in the western part of the state, 

 and it may prove as injurious there as it has been in the Hudson river 

 valley. It is a source of deep regret that the commonwealth of Massa- 

 chusetts has curtailed its operations against the gipsy moth, Porthe- 

 tria dispar Linn. There was every reason to expect the ultimate ex- 

 termination of this pest on American soil if the work was continued. This 

 insect will now spread over our country, and residents of New York state 

 may soon find it among the insect pests which they will be obliged to 

 fight. This destructive species may appear within our state at any time ; 

 and for this reason a brief general account of it has been prepared, that 

 our people may be forewarned. Other insects of interest are mentioned 

 under " Notes for the year." 



Office work. There has been a marked increase in the routine office 

 work since last year in spite of every effort to save time along this line. 

 The inspection of nurseries under the direction of the commissioner of 

 agriculture has resulted in the collection of many scale insects, which 

 were referred to this office for name. The determining of these 



