20 



BULLETIN 358, U. S. DEPARTMENT OF AGRICULTURE. 



Table XIII. — Fecundity of hibernated female Anthonomus grandis thurberiae mated 

 with male A. grandis on cotton squares. 



June 19. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do- 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Date installed. 



Total . 



Average 



Maximum. 

 Minimum. . 



Date 

 oviposi- 



tion 

 began. 



Date 



oviposi- 



tion 

 ended. 



July 3 Sept. 7 



June 28 Sept. 3 



July 2 Aug. 13 



June 2S | Aug. 6 



June 29 Sept. 2 



...do Aug. 3 



July 3 



Julv 5 

 June' 30 

 July 7 

 July 5 

 July 2 

 June 28 

 ...do.... 

 July 1 

 July 4 

 June 28 

 ..do 



Aug. 4 

 July 24 

 Aug. 22 

 Aug. 21 

 Aug. 20 

 July 28 

 Aug. 2 

 Aug. 11 

 Aug. 24 

 Aug. 4 

 Aug. 2 

 July 24 



Oviposi- 



tion 

 period. 



Eggs deposited. 



Total. Per dav. 



Maxi- 

 mum 

 per day. 



Days. 

 67 

 68 

 43 

 40 

 66 

 36 

 33 

 20 

 54 

 45 

 47 

 27 

 36 

 45 

 55 

 32 



777 

 43.2 



20 



31 



0.5 



77 



1.1 



133 



3.1 



48 



1.2 



72 



1.1 



65 



1.8 



47 



1.4 



31 



1.5 



59 



1.1 



40 



.9 



51 



1.1 



30 



1.1 



77 



9 2 



71 



1.6 



47 



.9 



32 



1.0 



35 



1.0 



24 



.9 



970 





54 



1.3 



133 



3.1 



24 



.5 



The total eggs per female ranged from 24 to 133, with an average 

 of 54, and the general average per day was 1.3 eggs. The oviposition 

 period varied from 20 to 68 days and averaged 43.2 days. 



The progeny of this cross were also mated and produced fertile 



Fecundity of bred grandis females on cotton lolls. — Eighteen pairs of 

 bred grandis weevils were placed with cotton bolls and furnished 

 only this food until death. Seven of these females died without 

 depositing a single egg. The activities of the remaining 1 1 are shown 

 in Table XIV. 



Table XIV. — Fecundity of bred females of Anthonomus grandis on cotton bolls. 





Oviposition. 



Total 

 eggs- 



Eggs per day. 



Date installed. 



Started. 



Ended. 



Period. 



Average. 



Maxi- 

 mum. 



July 9 



July IS 

 July 19 



Julv 14 



Jm> 28 

 July 16 

 Julv 12 

 July 23 

 Aug. 7 

 Aug. 6 



Aug. 3 

 July 25 

 Sept. 7 

 Aug. 22 

 Sept. 5 

 Sept. 10 

 Aug. 7 

 Aug. 17 

 Sent. 16 



Days. 

 17 

 6 



45 

 26 

 52 

 61 

 16 

 11 

 42 

 19 

 22 



5 

 3 



17 

 13 

 17 



24 

 5 

 2 



5 

 2 

 8 



0.3 

 . 5 

 .4 

 .5 

 .3 

 .4 

 .3 



!oi 



.01 

 .4 



1 



Do. . 



9 



Do 



2 



Do 



9 



Do 



2 



Do... 



3 



July 16 



3 



July 24 



1 



Do 



•> 



Do 



July 30 I Aug. 17 

 July 26 Sept. 16 



1 



Do 



9 







Total 



317 

 29 



101 



9 



24 



2 









.3 









61 

 6 



3 







.01 











