22 



BULLETIN 189, U. S. DEPAETMENT OF AGKICULTUEE. 



July 9 it is possible ovipositioii began two or three days earlier in the 

 field. Moths emerged in the rearing cages until August 21. (See 

 Table XVI.) 



FIRST-BROOD MOTHS. 



Table XVI. — Emergence of first-hrood moths of the codling moth at 

 Winchester, Va., in 1912. (See fig. 12.) 



Date of obser- 

 vation. 



Number 

 of moths 

 emerging. 



Date of obser- 

 vation. 



Number 

 of moths 

 emerging. 



July 9 . 



1 



20 

 25 

 27 

 27 

 33 



Aug 2 ... 



23 

 8 

 23 

 18 

 13 

 8 



13 



6 



17 



10 



20 



14 



IS 



25 



29 



21 





Total 



228 



The relation of the two broods of moths can be better understood 

 by reference to figure 12, where their seasonal appearance is repre- 

 sented graphically. 



BAND COLLECTIONS. 



An old imsprayed orchard located about a mile south of Winchester 

 was used for the band-record experiments of 1912. The trees 



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Fig. 12. — Diagram to illustrate emergence of spring-brood and fii'st-brood moths of the codling moth at 



Winchester, ^'a., in 1912. 



were of late fall and winter varieties well laden with fruit, and 

 the infestation was very extensive, practically every apple bemg 

 attacked by one or more codhng-moth larvae at some time during the 

 season. 



