CODLING MOTH IN" SANTA CLARA VALLEY. 



133 



Table XXI.— Pwpseof the first brood; variation in length of pupal stage. Summary of 



Tables XVIII and XIX. 



Number 



Pupal 



Number 



Pupal 



Number 



Pupal 



Number 



Pupal 



of pupae. 



stage. 



of pupae. 



stage. 



of pupae. 



stage. 



of pupse. 



stage. 





Days. 





Days. 





Days. 





Days. 



1 



11 



3 



23 







35 







47 







12 



4 



24 







36 







48 





13 



4 



25 







37 







49 



14 



14 



1 



26 







38 







50 



6 



15 



1 



27 







39 







51 



17 



16 



1 



28 







40 







52 



16 



17 



3 



29 







41 







53 



17 



IS 



1 



30 







42 







54 



12 



19 



2 



31 







43 







55 



20 



20 



1 



32 







44 







3 



21 







33 







45 







5 



22 



1 



34 







46 







FIRST BROOD OF MOTHS. 



Time of emergence. — On July 8 the earliest first-brood moths 

 appeared from band material collected June 7, while the last moth 



Fig. 30.— Diagram showing emergence of first-brood moths for 1910. (Original.) 



of the spring brood emerged June 9. The gap between the last spring 

 moths and the earliest first-brood moths was therefore about one 

 month. 



As shown in figure 30 and Table XXII moths emerged in large num- 

 bers and in small numbers intermittently until September 22. No 

 absolute maximum could be determined, but the majority of the moths 

 emerged during a period embracing the latter half of July and the 

 first half of August. As shown in figure 30, the daily mean tempera- 



