CODLING MOTH IN SANTA CLARA VALLEY. 



133 



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



Tables XVIII and XIX. 



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 



l 15 18 21 24 27 30 2 



August 



5 6 II 14. 17 20 



September 



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- 



