Education Department Bulletin 



Published fortnightly by the University of the State of New York 



Entered as second-class matter June 24, 1908, at the Post Office at Albany, N. Y., 

 under the act of July 16, 1894 



No. 490 ALBANY, N. Y. March i, 1911 



New York State Museum 



John M. Clarke, Director 

 Ephraim Porter Felt, State Entomologist 



Museum Bulletin 147 



26th REPORT OF THE STATE ENTOMOLOGIST, 1910 



To John M. Clarke, Director of Science Division 



I have the honor of presenting herewith my report on the injuri- 

 ous and other insects of the State of New York for the year ending 

 October 15, 1910. 



The past season has been remarkably quiet so far as unusual out- 

 breaks of injurious insects are concerned. The entomologist was 

 exceptionally fortunate in discovering a colony of pedogenetic 

 larvae, presumably those ofMiastor americana. These 

 extremely peculiar forms were previously unknown in this country 

 and have been studied by only a few Europeans. A summarized 

 account of these interesting larvae is given in an appendix. 



Fruit tree pests. The experimental work With the codling 

 moth was continued the present season under more diverse condi- 

 tions, and data which will be of great value in the practical control 

 of this species, was secured. The experiments were conducted in 

 the orchards of W. H. Hart, Poughkeepsie ; C. R. Shons, Washing- 

 tonville and William Hotaling, Kinderhook. Great pains were 

 taken to secure an ample number of trees likely to produce a nearly 

 uniform amount of fruit. Each plot, as last year, except in the case 

 of Mr Hotaling's orchard, consisted of 42 trees, the fruit from the 

 central six alone being counted. Comparisons were made to ascer- 

 tain the relative efficacy of one spray given just after the blossoms 

 dropped, with this treatment supplemented by a second application 



