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



Table XXXIII. — Lengthof 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. 



Days. 

 3 



7 

 7 



Pu- 

 pal 



nod. 



Days. 

 15 

 14 

 14 

 14 

 14 

 14 



No. 

 of ob- 

 serva- 

 tion. 



Date of- 



Leaving 

 fruit. 



Pupa- 

 tion. 



July 29 

 July 31 

 Aug. 2 

 Aug. 10 

 ...do 



12J Aug. 14 



Aug. 5 



Aug. 6 



Aug. 9 



Aug. 15 



Aug. 18 



Aug. 17 



Emer- 

 gence. 



Mak- 

 ing of 

 co- 

 coon. 



Aug. 18 

 Aug. 20 

 Aug. 27 

 Sept. 2 

 Sept. 5 

 Sept. 3 



Days. 



Pupal 

 period. 



Days. 

 13 



14 



18 

 18 

 18 

 17 



Average 6. 166 15. 250 



Maximum 9 18 



Minimum ; 3 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.) 



3 



m 



m 



m 



If) <0 N <0 0> Cl x 



<\j c\j (\j (vj nj <r> o) 



JULY 



»^ "^ ^ «v -^ V, V. V "N. X. 



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. 



ffi 



EM 



"N (V) lo N O) 

 > > >» V, v. 



(\j ^ (o <D 



■v (*> lo r\ <yj v. 

 i\l (V 01 (\i (Vi p> 



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'.) 



