1914.1 PUBLIC DOCUMENT — No. 31. 55 a 



REPORT OF THE ENTOMOLOGIST. 



V 



H. T. FERNALD. V 



The entomological work of the experiment station during 

 1913 has been mainly along lines indicated in previous reports. 

 It has not seemed wise to take up many new subjects for in- 

 vestigation, but, instead, to devote most of the time available 

 to those already under way. 



Experiments for the control of the onion maggot, begim in 

 1912, were discussed in the last annual report. The work of 

 the first season indicated that the methods recommended by 

 most Avriters were either ineffective or too costly for practical 

 use. The season of 1913 was therefore devoted to the testing 

 of new materials as insecticides, particularly applied during 

 the ]^lanting process, in order to avoid the expense of special 

 applications. None of the materials thus tested proved to be 

 entirely satisfactory, though one or two were sufficiently so to 

 warrant repetition the coming year. Avhen further experiments 

 will accordingly be made. 



Studies on the marguerite leaf miner {Pliytomyza chrysan- 

 tJiemi Kow.) have been made at intervals at this station for 

 a number of years, as opportunity offered. The work has at 

 last been completed, the entire life history of this gi'eenhouse 

 pest having been ^vorked out, together wdth methods for its 

 control, and the completed paper by Mr. 'M. T. Smulyan is 

 about ready for publication. 



Observations of the dates of hatching of the more important 

 scale insects of this region have been continued, and the data 

 which have been accumulating on this subject should prove of 

 much value, at least localh\ The work should be continued at 

 least two or three years longer. 



