86 



BULLETIN 429, U. S. DEPARTMENT OF AGRICULTURE. 



for many years. Because of the rather exceptionally liigh altitude 

 and its possible effect on insect behavior, it was considered desirable 

 to make band records in this mountain locality. 



Through the courtesy of Dr. James Rolls, a number of trees were 

 obtained for this purpose, and bands placed on them in May. How- 

 ever, no larvae were found until June 7, when 5 were taken from the 

 bands, 4 of which proved to be wintering larvse. The maximum 

 number of larvae of the first brood occurred July 16, the exact date 

 of the occurrence of the greatest number of larvse of the second 

 brood at Roswell. From tliis date on the number collected is so 

 variable that no very definite conclusions can be drawn. However, 

 it appears probable that the overlapping of first-brood larvae with a 

 partial second brood may have taken place about September 5. 

 Reference to Table LXII will show the great number of wintering 

 larvae after August 1 and the nmnber of moths emerging from, band- 

 record larvae throughout the season. 



Table LXII. — Band records for the codling moth at Santa Fe, N. Mex., 1913. 

 [Larvae collected by Mr. Alfred Rolls.] 



Record No. 



Date of 

 collec- 

 tion. 



Nimi- 

 ber of 

 larvEe. 



Emer- 

 gence of 

 moths. 



Winter- 

 ing 

 larvae. 



Record No. 



Date of 

 collec- 

 tion. 



Nvun- 

 ber of 

 larvae. 



Emer- 

 gence of 

 moths. 



Winter- 

 ing 



larvffi. 



7 



June 7 



10 



13 



16 



19 



22 



25 



28 



Julv 1 



4 



7 



10 



13 



16 



19 



22 



25 



28 



31 



Aug. 3 



6 



9 



12 

 15 

 18 

 21 



5 



1 



4 



33 



Aug. 24 



27 



30 



Sept. 2 



5 



8 



11 



14 



17 



20 



23 



26 



29 



Oct. 2 



5 



8 



11 



14 



17 



20 



23 



26 



29 



Nov. 1 



4 



7 



15 



26 



19 



20 



22 



16 



11 



7 



6 



17 



9 





15 



8 



34 



26 



9 









35 



19 



10 



1 



2 



4 



2 



1 



2 



2 



36 



20 



11 



37 



92 



12 



38 



16 



13.- .. 



39 



11 



14 



2 





2 



40 



7 



15 



41 



6 



16 ... 



1 

 3 



10 

 21 

 38 

 23 

 24 

 28 

 19 

 25 

 19 

 35 

 34 

 37 

 25 

 36 

 31 



3' 



8 



12 



28 



14 



7 



8 



4 



i' 



i 



2 



9 

 10 



1? 

 20 

 15 

 25 

 19 



42 



17 



17 



43 



9 



18 



44. 





19 



45 



4 

 13 



7 

 12 

 11 

 8 

 8 

 6 

 6 





4 



20 



46 



47 



13 



21. 



7 



22 



48 



12 



23 



49 



11 



24. 



50 



8 



25... 



51 



8 



26 



52 



6 



27 



53 



6 



28. 



54 





29 





37 

 25 

 36 

 31 



55 



56 









30 









31. 



57 









32 



58 



1 





1 









In figure 15 may be seen a diagram illustrating the variable manner 

 in which the larvae were found to occur in the field at Santa Fe 

 during the season of 1913. While it is difficult to account for this 

 evident variation, weather conditions prevaihng at times during the 

 period of observations very probably influenced the number of larvae 

 materially. 



The emergence of moths from band-record larvae at Santa Fe was 

 more or less regular, according to the curve found in figure 16, as 

 contrasted with the corresponding illustration deahng with the emer- 



