54 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table LV. — Life cycle of the first generation of the codling moth, as observed by rearing 

 at Douglas, Mich., in 1911 — Continued. 









Date of— 





Days for- 







No. 

 of ob- 







































serva- 

 tion. 



Egg 

 deposi- 

 tion. 



Hatch- 

 ing. 



Larva 

 leaving 

 the fruit. 



Pupa- 

 tion. 



Emer- 

 gence of 

 moth. 



Hatch- 

 ing. 



Feed- 



ing. 



Making 



of 

 cocoon. 



Pupal 

 period. 



Total 



life 

 cycle. 



28 



June 11 

 ...do 



June 20 

 ...do 



July 7 

 ...do 



July 12 

 ...do 





9 

 9 



17 

 17 



5 

 5 







Julv 29 



...„. 



•is" 



29 



...do 



...do 



July 9 



July 13 



Juiy 30 



9 



19 



4 



17 



49 



30 



...do 



...do 



July 13 



July 18 



Aug. 4 



9 



23 



5 



17 



54 



31 



...do 



...do 



...do 



Julv 20 



Aug. 5 



9 



23 



7 



16 



55 



132 



...do 



...do 



Julv 7 



Julv 12 



July 28 



9 



17 



5 



16 



47 



133 



...do 



...do 



July 9 



Julv 13 



Julv 31 



9 



19 



4 



18 



50 



134 



...do 



...do 



...do 



Julv 12 



July 28 



9 



19 



3 



16 



47 



135 



...do 



...do 



Julv 13 



July 19 



Aug. 4 



9 



23 



6 



16 



54 



36 



June 12 



June 21 



July 6 



July 9 



July 22 



9 



15 



3 



13 



40 



37 



...do 



...do 



July 8 



Julv 14 



July 31 



9 



17 



6 



17 



49 



38 



...do 



...do 



July -10 



July 16 



Aug. 1 



9 



19 



6 



16 



50 



39 



...do 



...do..... 



...do 



July 15 



July 31 



9 



19 



5 



16 



49 



40 



...do 



...do 



...do 



Julv 16 



Aug. 2 



9 



19 



6 



17 



51 



41 



...do 



...do 



Julv 11 



...do 



Aug. 9 



9 



20 



5 



24 



58 



42 



...do 



...do 



...do 



July 15 



Julv 31 



9 



20 



. 4 



16 



49 



143 



...do 



...do 



July 9 



...do 



...do 



9 



18 



6 



16 



49 



144 



145 



46 



...do 



...do 



June 13 



...do 



...do 



June 22 



July 15 

 Julv'ii" 





Aug. 8 



2 July 31 



Aug. 4 



9 

 9 

 9 



24 







57 

 49 

 52 



July" 26" 







""'l9' 



....... 



"l5" 



47 



...do 



...do 



...do 



July 18 



...do 



9 



19 



7 



17 



52 



48 



...do 



...do 



Julv 12 



...do 



Aug. 3 



9 



20 



6 



16 



51 



49 



...do 



...do 



...do 



July 21 



Aug. 5 



9 



20 



9 



15 



53 



150 



June 14 



...do 



July 10 



Julv 15 



July 31 



8 



18 



5 



16 



47 



151 



...do 



...do 



Julv 11 



Julv 16 



Aug. 1 



8 



19 



5 



16 



48 



152 



...do 



...do 



...do 



July 17 



...do 



8 



19 



6 



15 



48 



153 



...do..... 



...do 



July 21 



July 29 



Aug. 10 



8 



29 



8 



12 



57 



154 

 55 



...do 



June 15 



...do 



June 23 



July "'9 



"July "u 



2 Aug. 1 

 July 30 



8 

 8 









48 

 45 



ie" 



5" 



""ie" 



56 

 57 



...do 



...do 



...do 



...do 



July 12 

 July 18 



Julv 18 

 Julv 26 





8 

 8 



19 

 25 



6 



8 







Aug. 8 



""13" 



54 



158 



June 16 



...do 



July 12 



Julv 17 



Aug. 2 



7 



19 



5 



16 



47 



159 



...do 



...do 



...do 



Julv 19 



Aug. 4 



7 



19 



7 



16 



49 



160 



...do 



...do 



July 13- 



Julv 18 



Aug. 1 



7 



20 



5 



14 



46 



61 

 62 



June 18 

 ...do 



June 24 

 ...do 



Julv 12 

 Julv 17 



July 27 

 July 30 





6 

 6 



18 

 23 



15 



'13 







Aug" 10 ' 



ii" 



""*53" 



63 

 64 



...do 



...do 



...do 



...do 



Julv 18 

 July 20 



...do 



July 28 



Aug! "9 



6 



6 



24 

 26 



12 



8 







""12" 



""52" 



65 



...do 



...do 



July 23 



Julv 29 



Aug. 10 



6 



29 



6 



12 



53 



66 



June 19 



June 26 



Julv 15 



July 26 



Aug. 9 



7 



19 



11 



14 



51 



67 



June 20 



June 27 



Julv 12 



Julv 20 



Aug. 5 



7 



15 



8 



16 



46 



68 



...do 



...do 



July 24 



Julv 29 



Aug. 10 



7 



27 



5 



12 



51 



69 



...do 



...do 





Aug. 4 



Aug. 18 



7 



...„. 





14 



59 



170 



...do 



...do 



" Julv "i4" 



Julv 21 



Aug. 5 



7 





7 



15 



46 



171 



...do 



...do 



...do 



Julv 23 



Aug. 6 



7 



17 



9 



14 



47 



172 



...do 



...do 



Julv 20 



Julv 29 



Aug. 10 



7 



23 



9 



12 



51 



73 



June 26 



Julv 3 



Julv 28 



Aug. 3 



Aug. 15 



7 



25 



6 



12 



50 



74 



June 27 



July 4 



...do 



...do 



...do 



7 



24 



6 



12 



49 



75 



...do 



...do 



...do 



Aug. 6 



Aug. 19 



7 



24 



9 



13 



53 



Bagged fruit: average feeding, 20.9 days. 



2 Pupated in fruit; average feeding, 21.4 days. 



Table LVI. — Length of the life cycle of the first generation; summary of Table LV. 



Observations. 



Days for— 



Hatch- 

 ing. 



Feeding. 



Making of 

 cocoon. 



Pupal 

 period. 



Total life 

 cycle. 



Average 



8.33 

 10 

 6 



21.25 



29 



15 



6.54 

 18 

 2 



15. 18 



24 



11 



51.10 

 64 



42 





Minimum 



