CODLING MOTH IN SANTA CLARA VALLEY. 

 Table XLVIII. — Second-brood eggs: Summary of Table XLVL 



159 



Observations. 



Length 



of the 



egg stage. 



Average 



Maximum 



Minimum 



Days. 

 12.5 

 15 

 11 



SECOND BROOD OF LARVAE. 



Time of hatching. — Eggs obtained in the cages hatched from early 

 August until September 25, but as the first moths did not oviposit in 

 confinement just-hatched larvae in numbers were probably in evi- 

 dence in the field from the latter part of July until the middle of 

 October, when most varieties of apples were picked. 



Feeding period. — Apples on which eggs had been laid were placed 

 in jelly glasses to obtain a record of the time taken by the larval 

 development in the fruit. Although in most cases several larvae 

 entered the same fruit more than two full-grown larvae never issued 

 from the same fruit. The apples used were yellow Newtown Pip- 

 pins and were large enough to provide food for several worms. The 

 larvae have a habit of coining out of the apple, wandering around the 

 glass for a few- days, and then entering the fruit again, thus extend- 

 ing the period of their growth. This habit may account in part for 

 the large variation in the length of the period between hatching and 

 the final emergence from the fruit for the purpose of spinning the 

 wintering cocoon. The maximum time spent in the fruit was 79 

 days and the minimum 43, with an average of 58.15 days. 



Table XLIX gives the record of the time spent in the fruit of 39 

 individuals. 



Table XLIX. — Second-brood larvae: Time spent in the fruit. 



No. of 



Larva 



Larva 

 emerged 



Days 



No. of 



Larva 



Larva 

 emerged 



Days 



apple. 



hatched. 



from 

 fruit, 



fruit, 



apple. 



hatched. 



from 

 fruit. 



fruit. 



13 



Sept. 1 



Oct. 21 



50 



53 



Sept. 7 



Nov. 22 



76 



28 



Sept. 2 



Nov. 7 



66 



54 



Sept. 8 



Nov. 2 



00 



29 



...do 



Nov. 2 



61 



55 



Nov. 21 



74 



33 



Sept. 3 



Oct, 27 



54 



56 



...do 



Nov. 5 



58 



34 



...do 



Nov. 1 



59 



57 



...do 



Nov. 26 



79 



35 



Sept. 2 



Oct. 22 



50 



59 



Sept. 9 



Nov. 13 



65 



36 



Sept. 3 



Nov. 12 



70 



60 



Sept. 8 



Oct. 23 



45 



36 



Sept. 4 



Oct. 20 



46 



60 



Sept. 10 



Nov. 24 



75 



37 



Sept. 3 



Oct. 22 



49 



61 



Sept. 9 



Oct. 27 



48 



40 



Sept. 5 



Oct, 20 



45 



61 



...do 



Oct. 31 



52 



41 



Sept. 4 



Nov. 4 



61 



62 



Sept. 8 



Nov. 15 



68 



42 



Sept. 5 



...do 



60 



63 



Sept, 11 



Oct, 30 



49 



43 



Sept. 4 



Nov. 3 



60 



64 



...do 



Nov. 11 



61 



45 



Sept. 6 



Oct, 14 



43 



65 



Sept. 10 



Nov. 1 



52 



46 



...do 



Nov. 5 



60 



69 



Sept. 11 



Nov. 5 



00 



47 



Sept. 5 



Nov. 14 



70 



75 



Sept. 15 



Nov. 2 



48 



49 



Sept. 6 



Oct. 19 



43 



75 



...do 



Nov. 20 



66 



50 



Sept, 7 



Nov. 8 



62 



78 



...do 



Nov. 12 



58 



51 



...do 



Oct. 31 



54 



79 



...do 



Nov. 9 



00 



52 |...do 



Nov. 12 



66 











