42 BULLETIX 252, U. S. DEPARTMENT OF AGRICULTURE. 



Table XXXIII. — Length of the pupal stage of the first brood, Winthrop. Me.. 1914. 



No. 

 of ob- 

 serva- 

 tion. 



Date of- 



Leaving 

 fruit. 



July 24 

 July 27 



...do 



...do 



July 28 

 July 29 



Pupa- 

 tion. 



July 27 

 Aug. 3 

 ...do.... 

 Aug. 4 

 Aug. 6 

 Aug. 2 



Emer- 

 gence. 



Aug. 11 

 Aug. 17 

 ..do.... 

 Aug. 18 

 Aug. 20 

 Aug. 16 



Mak- 

 ing of 

 co- 

 coon. 



Pu- 

 pal 

 pe- 

 riod. 



No 

 of ob- 

 serva- 

 tion. 



Date of- 



Leaving 

 fruit. 



Pupa- 

 tion. 



July 29 

 July 31 

 Aug. 2 

 Aug. 10 

 ...do 



Aug. 5 

 Aug. 6 

 Aug. 9 

 Aug. 15 

 Aug. 18 



12 i Aug. 14 Aug. 17 



Emer- 

 gence. 



Mak- 

 ing of 



Aug. IS 

 Aug. 20 

 Aug. 27 

 Sept. 2 

 Sept. 5 

 Sept. 3 



Pupal 

 period. 



Days. 

 13 

 14 



18 

 18 

 18 

 17 



Average 6. 166 



Maximum 9 



Minimum 3 



15. 250 

 18 

 13 



FIRST BROOD OF PUP^E OR SUMMER PUP;E. 



Time of pupation. — Pupation of the first brood commenced July 27 

 and extended until August 18, as shown in Table XXXIII. (See 

 fig. 7.) 



*J 



*< "~~::""ZA:zr::::::::::: 



_ZS Z \JS AZJ 



lO <0 N <© O) Q ^s 

 «VJ M tVl tVJ <\J t>5 oj 

 JULY 



AUGUST 





Fig. 7.— Diagram showing pupation of the first brood of the codling moth in 1914 at 'Winthrop, Me. 



(Original.) 



Length of the pupal stage. — Table XXXIII records the length of the 

 pupal period of 12 individuals. As will be noted, the average length 

 of the pupal period was 15.250 days; maximum, 18 days; minimum, 

 13 days. 



3 



% 



ffl 



O) 



AUGUST SEPT. 



Fig. 8.— Diagram showing emergence of the first brood of moths of the codling moth in 1914 at Win- 

 throp, Me. (Original.) 



FIRST OR SUMMER BROOD OF MOTHS. 



Time of emergence. — The moths of the summer brood commenced 

 to issue August 11. The last moth emerged September 5. The 

 record of the moth emergence is given in Table XXXIV. (See fig. 8.) 



