CODLING MOTH IN COLORADO. 



79 



The data from the studies of the larvae collected in the Edwards 

 orchard are given in Table LVI, in which it will be found that 50 



JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER 



Fig. 31. — Number of codling moth larvse collected from banded trees, Edwards orchard, 

 Grand Junction, Colo., 1916. 



collections were made beginning June 17 and ending November 11. 

 During this period 4,998 larvae were collected. Figure 31 represents 

 the rate at which the 

 larvae were leaving 

 the fruit during the 

 three - day intervals 

 throughout the sea- 

 son. It will be noted 

 in the table that 49.19 

 per cent of the larvae 

 transformed to the 

 adult stage in 1916, 

 and that the remain- 

 der, 50.81 per cent, 

 were wintering indi- 

 viduals. None of the 



JU/VE 



% 01 10 <0 5 J £ 



JULY 



rfVGOST 



larvae collected in 

 this orchard after 

 August 19 trans- 

 formed until the 

 spring of the following year. The percentage of moths emerging 

 in 1916 from each collection is shown diagrammatically in figure 32. 



Fig. 32. — Percentage of codling moths emerging from band- 

 collected material, Edwards orchard, Grand Junction, 

 Colo., 1916. 



