LIFE HISTORY' OF THE CODLING MOTH IN MAINE. 19 



Table XIII. — Lengthof the pupal stage of the first brood, Winthrop, Me., 1913. 



No. 

 ofob 

 serva- 

 tion. 



Date of- 



L earing 

 fruit. 



July 25 

 July 26 

 July 27 



...do.... 

 July 2S 

 July 29 



...do.... 

 July 30 



...do.... 



...do.... 



...do.... 



...do 



July 31 



...do.... 



...do.... 



Pupa- 

 tion. 



July 30 

 ...do.... 

 ...do.... 

 Aug. 1 

 Aug. 3 

 ...do.... 

 ...do.... 

 ...do.... 

 Aug. 4 

 Aug. 5 

 Aug. 7 

 Aug. 9 

 Aug. 4 

 Aug. 5 

 Aug. 6 



Emer- 

 gence. 



Aug. 11 

 Aug. 14 

 ...do.... 

 Aug. 16 

 Aug. 17 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 Aug. 20 

 Aug. 22 

 Aug. 26 

 Aug. 18 

 Aug. 19 

 ...do.... 



Mak- 

 ing of 



co- 

 coon. 



Days. 

 5 

 4 

 3 



5 



Pupal 

 nod. 



Days. 

 12 

 IS 

 15 

 15 

 14 

 11 

 14 

 14 

 13 

 15 

 15 

 17 

 14 

 14 

 13 



No. 

 of ob- 

 serva- 

 tion. 



Date of- 



Leaving 

 fruit. 



July 

 ...do. 

 ...do. 



Aug. 

 ...do. 



Aug. 

 ...do. 

 ...do. 

 ...do. 

 ...do. 



Aug. 



Aug. 



Aug. 



Aug. 



Aug. 



Pupa- 

 tion. 



Aug. 6 

 Aug. 8 

 Aug. 9 

 Aug. 8 

 Aug. 9 

 ...do.... 

 Aug. 10 

 Aug. 11 

 Aug. 15 

 Aug. 16 

 Aug. 11 

 Aug. 13 

 Aug. 14 

 Aug. 10 

 Aug. 22 



Emer- 

 gence. 



Aug. 23 

 Aug. 27 

 Aug. 23 

 Aug. 27 

 Aug. 24 

 Aug. 23 

 Aug. 25 

 Aug. 26 

 Aug. 30 

 Sept. 1 

 Aug. 26 

 Aug. 31 

 Aug. 29 

 Aug. 26 

 Sept. 6 



Average 



Maximum. 

 Minimum.. 



Mak- 

 ing of 



co- 

 coon. 



Days. 

 6 

 8 

 9 

 6 

 7 

 6 

 7 

 8 

 12 

 13 

 6 

 7 

 7 

 2 

 12 



6.566 

 13 

 2 



Pupal 

 period. 



Days. 

 17 

 19 

 14 

 19 

 15 

 14 

 15 

 15 

 15 

 16 

 15 

 18 

 15 

 16 

 15 



15. 066 

 19 

 12 



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



Time of pupation. — The earliest pupation of the first-brood larvae 

 occurred July 30, the latest August 22. (See Table XIII and fig. 3.) 



<0 <J> o ■«• 

 <Vi 01 <•) «•> 



J ULr 



1| t) It Kl l ONCDO ) 



*^~~ — ~^-~.^ — ~» — <\i(VjAj<Vj<Vl 

 AUGUST 





Fig. :',. — Diagram showing pupation of the first brood of the codling moth in 1913 at Winthrop, Me. 



(Original.) 



Length of the pupal stage. — The average length of the first-brood 

 pupal stage, as shown in Table XIII, was 15.066 days; maximum, 

 19 days; minimum, 12 days. 



FIRST OR SUMMER BROOD OF MOTHS. 



Time of emergence. — First-brood modi emergence commenced 

 August 7, as shown in Tabic XIV. The last moth of tho summer 

 brood emerged September 6. As previously stated, the number of 

 first-brood larvae transforming in Maine is comparatively small, and 

 hen'*- the summer brood of moths is small. (See fig. 4.) 



