REPORT OF THE STATE ENTOMOLOGIST I917 1 7 



INJURIOUS INSECTS 



CODLING MOTH 



Carpocapsa pomonella Linn. 



The experimental work of the last two years, with particular 

 reference to the serious injury caused by the codling moth in the 

 western part of the State, was continued the past season in coopera- 

 tion with the bureau of horticulture of the State Department of 

 Agriculture and the Orleans county farm bureau. The orchards 

 selected for the experiments were located through the courtesy of 

 Messrs L. F. Strickland of Lockport and A. B. Buchholz of Albion, 

 both agents of the State Department of Agriculture. An effort 

 was made, as in preceding years, to secure orchards which promised 

 a fairly good and uniform crop and in Niagara county we were 

 successful though, owing to the general light crop in Orleans county, 

 the crop on the experimental trees was much smaller than one 

 could wish. 



The orchards selected were those of Messrs George Mead of 

 Barker and H. E. Welknan of Kendall, the former in Niagara and 

 the latter in Orleans county. Every facility was placed at our 

 disposal, these gentlemen spraying in substantially the same manner 

 as in preceding years. In each case the men and the equipment on 

 the place were used, the Entomologist or his representative super- 

 vising the operations. There were, as originally planned, twenty 

 experimental trees in each orchard though, owing to the special 

 conditions obtaining, an additional plot composed partly of Baldwins 

 and partly of greenings was laid out in the Barker orchard. The 

 very small yield in plots 2 and 3 in the Kendall orchard resulted 

 in the determination to omit the third spraying, a decision abundantly 

 justified by the scattering crop on plot 3, in particular, at picking 

 time. Various observations were made and reported during the 

 season by Messrs L. F. Strickland and F. J. Rimoldi and these 

 gentlemen, together with Mr L. H. Spooner and Mr J. B. Achilles, 

 assisted in the classification of the fruit. 



Life history and habits. An outline of the life history of this 

 pest may well be given before the details of the exiDcrimental work 

 are discussed, since a knowledge of the habits of this insect is essential 

 to an appreciation of the data. The codling moth or apple worm 

 winters in a tough, silken cocoon, usually located in an oval celj 



