BIOLOGY OF AKIZONA WILD COTTON WEEVIL. 



19 



Table VII. — Developmental period of Anthonomus grandis thurberiae in cotton bolls, 

 Agua Caliente ranch, Arizona, 1914- 





Date 



adults 



emerged. 



Males. 



Females. 



Condition found at examination 

 of bolls at close of experiment 

 on Nov. 10, 1914. 



eggs 

 depos- 

 ited. 



Period. 



Num- 

 ber 

 weevils. 



Weevil 



days. 



Period. 



Num- 

 ber 

 weevils. 



Weevil 

 days. 



July 13 

 23 



July 30 



Days. 

 17 



1 



17 



Bays. 















1 live female in cell, 2 dead larvae. 



24 

















1 live female, 2 pupae, and 1 larva 



25 

















dead. 

 1 live and 1 dead adult in cells. 



27 



Aug. 17 



21 



1 



•21 









1 dead adult in cell. 



28 









Do. 



30 

















Do. 1 



Aug. 1 



2 

















Do.i 



Aug. 25 



23 



1 



23 









1 male has emerged. 



4 









1 dead adult in cell. 1 



7 



Sept. 4 









28 



1 



28 



Do. 1 



13 









1 live pupa in cell. 



20 



Sept. 7 









18 



1 



18 





24 









1 dead adult in cell. 1 



28 

















1 female emerged before Sept. 22. 



30 

















3 dead adults in cells. 



31 

















1 male alive and 1 female dead in 



Sept. 1 



2 



Sept. 22 



21 



1 



21 



21 



1 



21 



cells. 

 1 female alive, 2 adults dead. 

 1 male alive in cell. 



3 

















1 male emerged, 1 adult and pupa 



4 

















dead. 

 1 male alive in cell. 



11 

















2 adults dead. 



12 

















1 live female. 



14 

















1 male has emerged. 



17 

















1 male, 1 female emerged; 1 male 



19 

















alive. 

 2 adults alive, 2 adults dead. 



21 

















3 males emerged, 1 male alive in 



23 

















cell. 



2 males emerged, 3 adults alive in 



27 

















cell; 1 male dead in cell. 

 1 male emerged, 1 male and 1 fe- 



29 

















male alive in cell, 1 male dead in 

 cell. 

 2 males alive in cell. 



Oct. 1 

















1 female emerged, 2 males and 1 



3 

















female alive in cell, 1 larva alive 

 in cell. 

 1 female emerged, 1 adult dead in 



5 

















cell. 



7 

















2 adults alive in cells. 



9 

















2 adults and 2 pupae alive in cells. 

 2 adults alive in cells. 



12 

















14 

















1 weevil and 1 larva alive. 



16 

















4 pupae and 1 larva alive in cell. 



19 

















2 pupae and 1 larva alive in cell. 



















Total 







20.5 







22.3 





Averag 





















Total weevils, 

 both sexes 



Average period, 

 both sexes 







2 



7 

 1.4 









1 These adults were evidently killed by proliferation. 



From this table it is seen that the results of rearings in cotton 

 bolls differ very widely from those in cotton squares. The most 

 marked difference is in the tendency exhibited by the weevils to 

 remain in hibernation in the cells in the bolls. In fact, only seven 

 weevils emerged directly after what might be termed a normal devel- 

 opmental period. 



