52 



BULLETIN 1235, U. S. DEPARTMENT OF AGRICULTURE. 



LARVAE OF THE SECOND BROOD. 



Time of hatching. — The first larvae of the second brood were recorded 

 on July 22, and worms continued to hatch until October 2. The 

 maximum number of larvae hatching in one day was 954 on August 12, 

 or 21 days after the earliest larvae appeared. No worms were hatched 

 from eggs deposited later than September 13. The time of hatch- 

 ing of second-brood eggs is found in Figure 30. 



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•Hatching of larva of the second brood of the codling moth at Yakima, Wash.. L921. 



Length of feeding />(/■;<></ of wintering larvae* — 1 

 jriod 



average 



the stock-jar method of 559 nontransformin 



ength of 



the feeding period hy 



larj8B Of the second brood was 34~02 days. The details of this period 



and the effect of lower temperatures from August 14 to September 

 J".) in lengthening the feeding period are shown Id Table 11. 



