THE CODLING MOTH IN THE OZARKS. 31 



CONCLUSIONS. 



Three generations of larvae of the codling moth occur in the Ozarks 

 of northern Arkansas, and most of the members of the second gen- 

 eration develop into adults. 



The date at which larvae begin to enter the fruit, relative to the 

 blossoming of apple trees, is susceptible to great variation on account 

 of weather conditions. In the two seasons under observation the 

 interval was 6 and 3 weeks, respectively, between the falling of 

 apple blossoms and the hatching of the first larvae. 



There is a sufficient interval between the first brood and the sec- 

 ond brood of larvae to be noticeable in the field; so that members 

 of the two broods, though present together, may be distinguished 

 by their size in most cases. 



The third brood of larvae constitutes the greater part of the winter- 

 ing brood. Since the principal varieties of apples are harvested in 

 this region while considerable numbers of the third brood of larvae 

 are yet immature, the number of larvae wintering in the orchard is 

 materially reduced. A smaller percentage of fruit is infested by the 

 codling moth in this locality than in many places where only two 

 generations are developed. 



A summary of the seasonal history of the insect for the year 1908, 

 as detailed in the preceding pages, is shown diagrammatically in 

 figure 8. 



