164 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table LIT. — Band record for 10 apple trees at San Jose, Cal., 1911, 





Number 





Number 



Date of 



of larvse 



Date of 



of larvse 



collection. 



and 



collection. 



and 





pupae. 





pupae. 



July 6.... 



56 



Sept. 7... 



23 



July 13... 



91 



Sept. 14.. 



43 



Jul}' 20... 



84 



Sept. 21.. 



73 



July 27... 



52 



Sept. 28.. 



82 



Aug. 3... 



40 



Oct. 5 



83 



Aug. 10. . 



38 



Oct. 12... 



64 



Aug. 17. . 

 Aug. 24. . 



16 



15 









774 



Aug. 31.. 



14 







From this table and the accompanying diagram, figure 38, there 

 can be observed two clearly defined broods, the first of which reached 

 its maximum about July 16 and the second about October 1. After 



Fig. 



-Diagram showing band record, Northern orchard, 1911. (Original.) 



August 10 only two pupa? were collected, so that it can be safely 

 assumed that all the individuals taken after this date belonged to 

 the second or overwintering brood. 



FIRST-BROOD EMERGENCE v. OVERWINTERING EMERGENCE, 



1911. 



From band records collected in 1911 (see Table LIV) 774 larvae 

 and pupae were taken. Some of these, from the first collections, were 

 placed in vials for individual pupal records, while the remainder were 

 placed in jars for adult emergence records. Those placed in the vials 

 were all of the first-brood larvae and only a very small percentage 

 overwintered. The latter collections — both consisting of first-brood 

 and second-brood larvse — resulted in an emergence of first-brood 

 moths of about 18 per cent. Only 157 moths emerged from these 

 collections, although a considerable number of pupae died in their 



