THE CODLING MOTPI IN THE YAKIMA VALLEY. 



49 



Table 42. — Life cycle of the first generation of the codling moth as observed by 

 rearing, stock-jar feeding method, Yakima, Wash., 1921. 



Date of 



egg do- 



Num- 

 ber 

 of 



In- 

 cuba- 



Larval feeding 

 period. 



Cocooning period. 



Pupal period. 



Life cycle. 1 



indi- 



























position. 



vid- 



tion. 



Aver- 



Maxi- 



Mini- 



Aver- 



Maxi- 



Mini- 



Aver- 



Maxi- 



Mini- 



Aver- 



Maxi- 



Mini- 





uals. 





age. 



mum. 



mum. 



age. 



mum. 



mum. 



age. 



mum. 



mum. 



age. 



mum. 



mum. 









Days. 



Days. 



Days. 



Dai/*. 



Days. 



Days . 



Days . 



Days. 



Days . 



Days . 



Days. 



Days. 



May 24 



2 



9 



31.00 



34 



28 



5.50 



6 



5 



12.50 



13 



12 



58. 00 



60 



56 



25 



3 



9 



27.33 



31 



24 



6. 67 



8 



6 



1 2. 33 



13 



11 



55. 33 



59 



52 



27 



5 



8 



28. 20 



30 



25 



5.40 



7 



5 



13.40 



15 



12 



55.00 



57 



52 



29 



3 



7 



27.00 



28 



25 



5.00 



6 



4 



13. 00 



14 



12 



52. 00 



54 



50 



June 1 



8 



7 



32.13 



38 



26 



6.25 



11 



3 



12.38 



13 



U 



57.76 



64 



52 



2 



17 



7 



30.18 



38 



18 



7.ss 



16 



3 



12.53 



16 



11 



57.59 



60 



44 



2 



11 



8 



32.36 



36 



30 



7.45 



16 



4 



12.73 



14 



10 



60.54 



69 



54 



3 



18 



8 



28.83 



34 



22 



5.44 



9 



4 



13.17 



18 



12 



55. 44 



60 



51 



3 



9 



9 



28.00 



30 



24 



4.78 



6 



4 



14.00 



27 



11 



55. 78 



70 



50 



4 



15 



9 



27.27 



32 



24 



4.93 



8 



3 



12.33 



16 



9 



53. 53 



61 



50 



4 



30 



10 



26.23 



30 



19 



5.10 



16 



3 



12.63 



17 



11 



53.97 



68 



45 



5 



11 



10 



29.18 



39 



25 



9.18 



28 



3 



13. 45 



23 



10 



61.82 



100 



51 



6 



4 



11 



24.75 



31 



22 



4.75 



6 



4 



13. 50 



14 



13 



54.00 



61 



50 



6 



12 



12 



26. 33 



30 



24 



7.08 



12 



4 



13.42 



18 



11 



58. 83 



64 



52 



7 



30 



12 



25.67 



31 



21 



6.07 



18 



2 



12.53 



20 



10 



56. 27 



72 



49 



8 



34 



12 



24. 47 



33 



20 



6.91 



18 



3 



12.26 



14 



10 



55. 65 



68 



46 



9 



59 



12 



23.90 



29 



19 



6.05 



23 



2 



12.90 



20 



10 



54. 85 



73 



45 



10 



60 



12 



23.80 



29 



13 



6.58 



24 



3 



12.72 



25 



10 



55.10 



79 



42 



12 



51 



11 



24. 35 



31 



20 



5.82 



14 



4 



12.69 



26 



10 



53.86 



61 



47 



15 



15 



9 



23.73 



32 



20 



5.60 



17 



3 



12.20 



14 



11 



50.53 



61 



46 



16 



33 



9 



23.61 



29 



18 



5.61 



20 



3 



12.61 



27 



10 



50.82 



70 



42 



18 



10 



8 



23.70 



29 



19 



5.70 



16 



1 



11.60 



13 



10 



49. 00 



63 



43 



19 



18 



8 



24.56 



32 



22 



5.39 



11 



3 



12.00 



14 



10 



49. 95 



62 



45 



20 



7 



8 



20.71 



22 



19 



4.29 



5 



4 



11.29 



13 



10 



44.29 



47 



42 



21 



5 



8 



20.60 



27 



15 



4.20 



6 



3 



10.60 



12 



6 



43.40 



51 



34 



22 



4 



8 



22.50 



24 



22 



4.00 



4 



4 



11.00 



11 



11 



45. 50 



47 



45 



23 



6 



8 



20.33 



28 



13 



6.83 



23 



2 



12.50 



22 



7 



47.66 



81 



33 



23 



4 



9 



22.25 



25 



21 



4.25 



5 



3 



11.75 



14 



11 



47.25 



49 



46 



25 



1 



9 



26.00 



26 



26 



6.00 



6 



6 



11.00 



11 



11 



52.00 



52 



52 



26 



1 



9 



18.00 



18 



18 



4.00 



4 



4 



12.00 



12 



12 



43.00 



43 



43 



27 



2 



9 



21.50 



22 



21 



14.00 



24 



4 



18.00 



24 



12 



62.50 



79 



46 



28 



1 



9 



21.00 



21 



21 



4.00 



4 



4 



12.00 



12 



12 



46.00 



46 



46 



29 



1 



9 



17.00 



17 



17 



5.00 



5 



5 



9.00 



9 



9 



40.00 



40 



40 



490 



10.22 



25.23 



39 



13 



6.07 



28 



1. 



12.62 



27 



6 



54.14 



100 



33 



Add 1.74 days for complete life cycle. 



74366°— 24 4 



