9,9, 



BULLETIN 189, U. S. DEPARTMENT OF AGRICULTURE. 



July 9 it is possible oviposition 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-brood 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 



25 

 8 

 23 

 18 

 13 

 8 



13 



6 



17 



10 



20 



14 



25 



18 



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 unsprayed orchard located about a mile south of Winchester 

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



35 



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 << <\i <\j fl) 



At A V 



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 *•*• — C^ C\j 05 

 JUNE 



i miiiliMil iiiiilHMiiiiiiiiiiiiiiHHBimii 

 o *o ? |o ^ V) o io o to :? 



*s ** t\j (\j to 



AUGUST 



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



Winchester, Va., in 1912. 



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

 the infestation was very extensive, practically every apple being 

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

 season. 



