CODLING MOTH IX CENTRAL APPALACHIAN REGION. 



23 



One larva was taken under the bands on June 19. The number 

 collected increased throughout the remainder of June and the first 

 half of July. By referring to figure 13 it will be noticed that during 

 the fore part of August there occurred a series of very small collec- 

 tions, and about this tune evidently most of the first^brood larvae 

 had left the fruit, while those of the second brood were still feeding. 

 On July 1 5 newly hatched larvae were observed entering fruit in the 

 field in sufficient numbers to exclude the probability of their belong- 

 ing to the first brood, especially since the last of the spring-brood 

 moths appeared on June 27. The second-brood larvae did not 

 hatch iii the laboratory until July 19, but this was probably three or 

 four days behind field conditions. Allowing for a normal feeding 



75 



70 

 65 

 60 



50 



30 



10 



f/RST BROOD 



SECOND BROOD 



^TXii 



iLU^ilmilmiliiiilimliiiiimiliimliiiiliiiilim 



JUNE JULY AUGUST SEPTEMBER OCTOBER 



Fig. 13. Diagram to illustrate band collections of larvae of the codling moth at Winchester, Va., in 1912. 



period, some of the second-brood larvae should have been leaving 

 the apples about August 9 to 13. The collections increased through 

 the latter part of August and the first half of September. No larvae 

 appeared under the bands after October 18. 



During the season of 1912 at Winchester 798 larvae were taken 

 from the bands and reared. Of these 27.19 per cent were killed in 

 handling or were devoured by their fellows after being placed in 

 the rearing cages; 28.57 per cent emeyged as moths of the first brood; 

 1.38 per cent were parasitized; 42.86 per cent of the larvae collected 

 wintered, and 15.04 per cent were whiter killed; 27.44 per cent passed 

 the winter successfully and emerged the following season, while 

 0.38 per cent represents the proportion of parasites that issued in 

 the spring of 1913. (See Table XVII.) 



