LIFE HISTORY OF CODLING MOTH IN PECOS VALLEY, N. MEX. 89 



First-brood larvae in 1912 fed on an average 21.52 days, and in 1913, 

 24.45 days. 



The pupal stage of the first brood in 1912 averaged 12 days, and in 

 1913, 11 days. 



Moths of the first brood in 1912 were out June 9 and continued to 

 emerge until July 22. In 1913 first moths were out June 3, the period 

 of emergence lasting until July 10. 



First-brood moths in 1912 oviposited over an average period of 

 4.45 days, and in 1913, 5.7. 



The life cycle of the first generation in 1912 required on the average 

 51.14 days, and in 1913, 46.91 days. 



Second-brood eggs in 1912 averaged 5.62 days for incubation, with 

 a minimum of 4, and a maximum of 8 days. The incubation period 

 of eggs of this brood in 1913 was on the average 4.9, with a minimum 

 of 4 and a maximum of 7 days. 



The feeding period of second-brood larvae in 1912 averaged 21.23 

 days, and in 1913, 19.7 days. 



The pupal stage for second-brood pupae in 1912 averaged 11.23 

 days, and in 1913, 11.06 days. 



The life cycle for the second generation of the codling moth in 1912 

 averaged 41.26 days, and in 1913, 41.04 days. 



Eggs of the third brood in 1912 averaged 5.75 days for the incu- 

 bation period, with a minimum of 4 and a maximum of 9 days. In 

 1913 the incubation period for eggs of this brood averaged 5.36 days. 



During 1912 third-brood larvae fed on an average of 26.55 days 

 with a range of from 15 to 56 days, whereas in 1913 the average feed- 

 ing period for this brood was 20 days, the range being from 15 to 28 

 days. 



The pupal stage of the third brood in 1912 required on an average 

 14.94 days, with a minimum of 11 and a maximum of 20 days. The 

 average length of this stage in 1913 was 11.4 days, with a minimum 

 of 7 and a maximum of 17 days. 



The fife cycle of the third generation of 1912 required on an aver- 

 age 48.57 days, with a range of from 36 to 62 days, and in 1912, 

 43 days, with a range of 34 to 58 days. 



Fourth-brood eggs were in evidence in 1913 on August 20, and 

 oviposition continued to September 8. The incubation period, on 

 an average, was 7.9 days. 



The feeding period of fourth-brood larvae in 1913 averaged 38.36 

 days, with a minimum of 25 days and a maximum of 53 days. All of 

 these larvae passed the winter as such. 



Records of egg deposition by individual moths were obtained 

 with females of the spring brood and also of the first and second 

 broods. The maximum egg deposition by a female of the spring 

 brood in 1912 was 91 eggs, while the average number per moth was 

 approximately 28 eggs. 



