84 



BULLETIN 932, U. S. DEPARTMENT OF AGRICULTURE. 



Table LVIII. — Emergence of codling moths of the spring brood, laboratory 

 cellar, Grand Junction, Colo., 1915. 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Num- 

 ber of 

 moths. 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Num- 

 ber of 

 moths. 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Num- 

 ber of 

 moths. 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Num- 

 ber of 

 moths. 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Num- 

 ber of 

 moths. 



May 30 

 31 



June 6 

 7 

 8 

 9 



1 

 2 

 4 

 1 

 3 

 5 



June 10 

 11 

 12 

 13 

 14 



3 

 6 

 3 

 1 

 2 



June 15 

 16 

 17 

 18 

 19 



6 

 15 



7 

 13 



8 



June 20 

 21 

 22 

 23 

 26 



9 

 2 

 2 



1 

 4 



June 27 

 28 

 29 



Total . 



2 

 3 

 2 



105 



In fruit cellar. — Observations were also taken of the time of emer- 

 gence of moths of the spring brood in a fruit cellar beneath a large 

 packing house where considerable wormy fruit had been temporarily 

 stored the previous fall. The records are from moths secured from 

 a cage containing wintering larvae and also from moths captured at 

 a screened window. The observations were made only on the dates 

 recorded in Table LIX. In this table it will be seen that 105 moths 

 emerged in the cage, while 48 were captured at the window. In 

 the latter connection it should be borne in mind that the records 

 of the insects found at the window do not necessarily indicate the 

 true time of their emergence. The emergence period of the caged 

 insects in the fruit cellar was somewhat similar to that in the labora- 

 tory cellar. 



It will be observed from the foregoing that moths may be ex- 

 pected to emerge from fruit cellars later than those out-of-doors, 

 and this emergence augments, to a certain extent, the late injury as 

 caused by the first brood of larvae. 



Table LIX. 



-Emergence of codling moths of the spring brood, cellar of fruit 

 packing house, Grand Junction, Colo., 1915. 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Number of 

 moths — 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Number of 

 moths — 



Date of 

 observa- 

 tion and 

 collec- 

 tion. 



Number of 

 moths — 



In cage. 



Found 



at 

 screened 

 window. 



In cage. 



Found 



at 



screened 



window. 



In cage. 



Found 



at 

 screened 

 window. 



June 2 

 8 



12 

 15 

 16 



1 

 21 

 32 

 26 



7 





 

 







1 



June 19 

 21 

 23 

 24 

 29 



5 

 6 

 3 



1 

 2 



2 

 16 

 3 

 4 

 11 



July 3 



7 



26 



Total 





 1 

 



2 

 8 

 1 



105 



48 



TIME OF DAY MOTHS EMERGE. 



During the seasons of 1915 and 1916 observations were made to 

 obtain data relative to the time of day the moths of the spring and 

 first broods emerged in largest numbers. These studies are reported- 

 herewith. 



