THE CODLING MOTH IN MICHIGAN. 25 



Table XXVII. — Feeding period of second-brood larvae; summary of Table XX VI. 



Length of feeding period. — In Table XXVI will be found the records 

 on the feeding periods for 81 individual larvae of the second brood. 

 The average length of feeding for the total number of observations is 

 34.2 days, the maximum 45 days, and the minimum L'l days. As is 

 to be expected these results are much higher than those for the first 

 brood (compare with Table XXIII), since at this time of year a much 

 lower degree of temperature prevails, and more feeding may be neces- 

 sary for the hibernating larvae. Figure 8 (p. 26) shows the jar used 

 in the rearing of codling moth larvae. 



Time of leaving the fruit. — The Saugatuek band-record experiment 

 of figure 10 shows that the earliest mature larva 1 appeared under the 

 bands August 30, and that larvae were collected more or less abun- 

 dantly throughout September and the early part of October. The 

 almost total absence of larvae during November was to a large extent 

 due to the scarcity of fruit, and this condition materially limited the 

 number of second-brood larva*. 



Table XXVIII. — Band-record experiments, Saugatuek, Mich., 1910. 



1 12 larvae escaped. 



