44 



BULLETIN 1235, U. S. DEPARTMENT OF AGRICULTURE. 



LARViE OF THE FIRST BROOD. 



Time of hatching. — The time of hatching of larvae of the first brood 

 was quite regular with the exception of June 17 and 18. Mean 

 temperatures below 60° F. on June 14 and 15 so delayed the de- 

 velopment of the eggs that no hatching occurred on June 17 and 18. 

 The first larvae hatched on June 2, and the last on July 10, with a 



/ 6 // /6 2/ 26 



PlO. 26.— Hatching of larvae of the first brood of the codling moth at Yakima, Wash., 1921. 



e // 



maximum of 755 on June 8. (See fig. 26.) Larvae of the first brood 

 were thus batching over a period of 39 days. 



I j nqtli qftfa feeding period. — In Table 37 the Length of the feeding 

 period of 722 first-brood larvae is tabulated. These data include both 

 traiisfonning and abntransforming Larvse. 



