LIFE HISTORY OF CODLING MOTH IN PECOS VALLEY, N. MEX. 81 



RESULTS AT ROSWELL. 



Banded trees for the experiments at Roswell were selected about 

 May 15, although no collections are recorded until May 20. Through 

 the kindness of a number of orchard owners, trees for banding were 

 obtained as follows: Five trees on the farm of Capt. W. C. Reid, 5 

 belonging to Mr. H. J. Hagerman; 4 in the orchard of Mr. R. C. 

 Horner; and 3 in an orchard owned by Mr. Robert Beers. Careful 

 collections were made from the bands on these trees at intervals of 

 three days from May 20 until November 7, and an accurate record 

 kept of the larvae found. By consulting the figures in Table LIX 

 it will be noted that the maximum number of first-brood larva? 

 occurring in the field is found to be on May 29, when 833 larvae were 



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Fig. 11.— Curve showing occurrence of codling-moth larvae under bands on apple trees, Roswell, N. 

 Mex.,1913. (Original.) 



collected from the 17 banded trees. Of this number, 129 proved to 

 be wintering larvae while 654 transformed and emerged as moths. 



A second maximum is found to occur July 16, when 1,674 larvae 

 were collected from the bands. Of this number 339 proved to be 

 wintering larvae, and 1,318 transformed the same season. 



The greatest number of third-brood larvae collected on a specified 

 date occurred September 8, when 1,073 are recorded. The number 

 of larvae wintering at this time in the season is much greater, a total 

 of 1,062 being found, while only 3 larvae transformed and emerged 

 the same season. Because of the overlapping of the broods of larvae 

 late in the season, this condition renders it impossible to determine 

 from these data when fourth-brood larvae occurred in greatest num- 

 bers in the field. (See fig. 11.) 



