12 BULLETIN 571, U. S. DEPARTMENT OF AGRICULTURE. 



Table V. — Length of egg stage of the pecan leaf case-bearer at Monticello, Fla., in 1915. 



Number of 

 eggs from 



which lar- 

 vae emer- 

 ged. 



Date of 



oviposi- 



tion. 



Date of 

 hatch- 

 ing. 



Length of 

 egg stage. 



1 



1 

 4 



18 

 1 

 7 



tiO 

 2 



23 

 1 



1915. 

 July 17 



...do.... 

 July 18 

 July 24 



...do 



July 31 



...do.... 

 Aug. 4 

 Aug. 5 



...do.... 

 • 



1915. 

 July 23 

 July 24 

 July 26 

 Aug. 1 

 Aug. 2 

 Aug. 6 

 Aug. 7 

 Aug. 11 

 Aug. 12 

 Aug. 13 



Days. 

 6 



7 

 8 

 8 

 9 

 6 

 7 

 7 

 7 

 8 







9 



6 



7.14+ 



Minimum 





Average for 118 individuals.. 



It will be noted from Table V that the average length of the egg 

 stage for 118 individuals was 7.14 days, the maximum 9, and the 

 minimum 6. 



THE PUPA STAGE. 



Of the larvae under observation that transformed to pupae during 

 1913, the first pupated on April 20, while during 1914 and 1915 the 

 first pupae did not appear until May 5. During the season of 1914 

 the actual time of earliest pupation was, perhaps, a trifle earlier 

 than recorded, since in cages in which only the daily emergence of 

 moths was observed the dates of pupation were not taken, and some 

 moths from the cages issued as early as May 15. It is very likely 

 that some larvae in these cages transformed to pupae during the last 

 few days of April. 



During the year 1913 the length of the pupa stage was determined 

 for 66 individuals, as is shown in Table VI: 



Table VI. 



-Length of pupa stage of the pecan leaf case-bearer at Monticello, Fla., during 

 1913. 





Date of — 







Date of— 





Number 

 of indi- 

 viduals. 





Days as 

 pupa. 



Number 

 of indi- 

 viduals. 





Days as 

 pupa. 



Pupa- 

 tion. 



Emer- 

 gence. 



Pupa- 

 tion. 



Emer- 

 gence. 





1913. 



1913. 







1913. 



1913. 





1 



Apr. 20 



May 13 



23 



1 



May 21 



June 8 



18 



2 



Apr. 25 



May 15 



20 



2 



...do.... 



June 9 



19 



1 



...do.... 



May 16 



21 



3 



...do.... 



June 11 



21 



1 



May 2 



May 21 



19 



1 



...do.... 



June 12 



22 



2 



...do 



May 22 



20 



1 



...do.... 



June 13 



23 



1 



May 4 



May 24 



20 



2 



May 22 



June 11 



20 



2 



May 6 



...do.... 



18 



2 



...do.... 



June 12 



21 



2 



May 8 



May 28 



20 



1 



...do.... 



June 13 



22 



1 



May 9 



May 27 



18 



1 



May 23 



June 15 



23 



1 



...do.... 



May 31 



22 



2 



May 27 



June 17 



21 



1 



May 11 



May 30 



19 



2 



May 29 



June 19 



21 



1 



...do.... 



June 1 



21 



1 



May 30 



June 20 



21 



4 



May 12 



June 2 



21 



3 



May 31 



...do.... 



20 



1 



May 13 



...do 



20 



1 



June 1 



June 21 



20 



3 



May 14 



June 3 



20 



1 



...do.... 



June 23 



22 



1 



...do.... 



June 5 



22 



2 



June 2 



...do.... 



21 



1 



May 15 

 May 19 





19 











5 



June 7 



19 







2 

 3 

 3 



...do.... 

 ...do.... 

 May 20 



June 8 

 June 9 

 June 6 



20 

 21 



17 





19.89 





23 



Minimiu 





17 





1 



...do.... 



June 8 



19 







