18 



BULLETIN 358, U. S. DEPARTMENT OF AGRICULTURE. 



Fecundity of hibernated thurberiae females. — The weevils used in this 

 series were hibernated individuals extracted from cells in Thurberia 

 bolls collected in Arizona on March 1, 1915. Nineteen pairs were 

 mated on cotton squares on June 18. (Table X.) 



Table X. — Fecundity of hibernated females of Anthonomus grandis thurberiae on cotton 



squares. 





Date 

 ovipo- 

 sition 

 began. 



Date 

 ovipo- 

 sition 

 ended. 



Ovipo- 

 sition 

 period. 



Eggs deposited. 



Date installed. 



Total. 



Per day. 



Maxi- 

 mum per 

 day. 





June 29 

 June 28 

 July 5 

 July 1 

 ...do. . .. 



Aug. 8 

 Aug. 2 

 July 25 

 Aug. 7 

 Sept. 4 

 Aug. 16 

 July 17 

 Aug. 25 

 Aug. 18 

 July 29 

 July 20 

 Sept. 9 

 Aug. 3 

 Aug. 2 

 Aug. 20 

 Aug. 27 

 Aug. 14 

 Aug. 2 

 Aug. 6 



Days. 

 41 

 36 

 21 

 38 

 66 

 49 

 19 

 59 

 47 

 27 

 20 

 74 

 34 

 32 

 51 

 58 

 54 

 29 

 39 



46 

 82 



9 

 109 

 90 

 , 49 

 26 

 76 

 47 

 54 



5 

 58 

 54 

 62 

 45 

 57 

 69 

 73 

 57 



1.1 

 2.3 



.4 

 2.9 

 1.4 

 1.0 

 1.4 

 1.3 

 1.0 

 2.0 



.25 



.8 

 1.6 

 1.9 



.9 

 1.0 

 1.3 

 2.5 

 1.5 



4 



Do 



6 



Do 



3 



Do 



7 



Do 



i 



Do... 



June 29 

 .do.. 



4 



Do 



5 



Do 



June 28 

 July 3 

 ...do. . .. 



5 



Do 



4 



Do 



4 



Do 



July 1 

 June 28 

 July 1 

 July 2 

 July 1 

 ...do 



2 



Do 



5 



Do.... 



6 



Do 



5 



Do 



5 



Do 



5 



Do 



July 2 

 July 5 

 June 29 



6 



Do 



6 



Do 



4 







Total 







794 

 41.79 

 74.00 

 19.00 



1,068 

 56.2 

 109 

 5 













1.3 

 2.9 

 .25 





Maximum 







7 



Minimum 















The total eggs per female ranged from 5 to 109, with an average of 

 56.2. The average eggs per female per day was 1.3, while the maxi- 

 mum was 7. The oviposition period varied from 19 to 74 days, with 

 an average of 41.79 days. 



Fecundity of first-generation thurberiae females. — Ten pairs of the 

 progeny of the hibernated thurberiae reared in cotton squares were 

 mated on cotton squares. (Table XI.) 



Table XI.— Fecundity of first-generation females of Anthonomus grandis thurberiae on 



cotton squares. 



Date installed. 



July 17. 

 July 18. 



Do. 



Do. 



Do. 

 Aug. 4. 

 July 19. 

 July 22. 

 July 24. 

 Aug. 4. 



Total. 

 Average. 



Maximum. 

 Minimum. 



Date ovi- 

 position 

 began. 



July 24 

 July 28 

 July 24 

 July 25 

 July 25 

 Aug. 10 

 July 29 

 July 25 

 Aug. 3 

 Aug. 7 



Date ovi- 

 position 

 ended. 



Sept. 1 

 Aug. 24 

 Sept. 20 

 Sept. 9 

 Aug. 28 

 Sept. 5 

 Sept. 22 

 Aug. 3 

 Aug. 26 

 Aug. 25 



Ovipo- 

 sition 

 period. 



Bays. 

 40 

 28 

 59 

 47 

 35 

 27 

 25 

 10 

 24 

 19 



314 

 31.4 

 59 

 10 



Eggs deposited. 



Total. 



244 

 24.4 



72 



Per day. 



1.8 



1.3 

 .7 

 .3 



.3 

 i.'J 

 .8 

 .7 

 .3 

 1.0 



1.4 



1. S 

 .3 



Maxi- 

 mum per 

 day. 



