REPORT OF THE STATE ENTOMOLOGIST 1902 91 



without interrupting the continuity of the work and in a measure 

 marring its value. It is to be hoped that in time the salaries 

 for assistants may be large enough to induce men to remain for 

 a series of years. 



Special investigations. The lines of work prosecuted in 1900 and 

 1901 have been continued and other investigations taken up. 



The grapevine root worm, Fidia viticida Walsh, had 

 caused so much injury in the Chautauqua grape belt that a 

 special investigation of the pest was undertaken last spring and 

 is still in progress. 



The series of experiments with insecticides for the control of 

 the San Jose* scale have been carried on in the same orchard 

 as during the last two years, and the earlier results have been 

 largely confirmed. These have also been tested by experiments 

 in other sections of the State. Further details of this work 

 will be found on subsequent pages. A Chinese ladybug, Child- 

 corus similis Rossi, has been established in our experimen- 

 tal orchard in the hopes that it will prove a valuable ally in con- 

 trolling this pest. 



The study of forest and shade tree insects has been continued ; 

 and the observations of earlier years, together with those of the 

 past season, are now ready for publication, and will appear in 

 an extensive memoir. 



The investigations on aquatic insects, commenced in 1900 by 

 Dr J. G. Needham at Saranac Inn, and continued last year at 

 Ithaca, were further prosecuted during the past season. The 

 work of 1902 has been confined largely to a study of the stone 

 flies, P e r 1 i d a e , and a family of small flies, Chironomidae, 

 a group which is very important so far as fish food is concerned, 

 and which was also reported on to some extent by Mr O. A. 

 Johannsen in Dr Needham's second report. 



The entomologist has undertaken an investigation of mosquitos 

 of the State, and considerable information has already been 

 secured. Lack of funds and pressing duties have prevented bring- 

 ing the work to a successful conclusion. 



Publications. The principal publications of the entomologist, 

 to the number of G4, are listed under the usual head. The more 

 important of those issued during the past year are the following : 

 Scale Insects of Importance and a List of Species in New York 



