16 



BULLETIN 1238, U. S. DEPARTMENT OF AGRICULTURE 



Table 7 gives data relative to the emergence of moths in 1919 and 

 1920. These data include records from two sources. In a few of the 

 cages nearly full-grown larvse collected in the field were allowed to 

 complete their feeding and enter the soil normally; the material 

 in the other soil cages was transferred after having entered soil 

 and spun cocoons in battery- jar cages in the insectary. Emergence 

 occurred over approximately the same periods for both classes of 

 material, the peaks of the emergence coinciding exactly, and as a 

 matter of convenience the records are here combined in one table. 



With the material collected in the field and allowed to enter the 

 soil normally, it is not known exactly how many completed their 

 feeding, entered the soil, cocooned, and pupated. 



Out of 157 cocoons placed in the soil cages in 1919, 90 moths, or 

 57 per cent of the possible total, emerged. The following year 247 

 moths emerged from 312 cocoons, or 79 per cent of the possible total. 



Table 7. — Emergence of moths of the fall cankerworm, Wallingford, Conn., 



1919 and 1920. 



IN 1919. 



Date. 



Emergence. 



Temperature. 



Remarks. 



Male. 



Female. 



Minimum. 



Maximum. 



Average. 







1 

 3 

 4 

 3 

 

 

 

 1 

 



19 

 3 

 

 1 

 

 9 



69 



21 

 

 

 



13 

 2 

 1 

 

 

 

 

 1 

 

 

 

 

 

 

 

 

 



1 



°F. 

 35 

 29 

 36 

 37 

 37 

 34 

 31 

 27 

 26 

 32 

 48 

 31 

 27 

 24 

 20 

 35 

 33 

 25 

 20 

 20 

 39 

 33 

 30 

 28 

 37 

 31 

 28 

 32 

 31 

 25 

 22 

 11 

 9 

 15 

 21 

 40 

 32 

 35 



°F. 

 62 

 51 

 51 

 46 

 45 

 45 

 51 

 55 

 59 

 50 

 57 

 55 

 47 

 44 

 49 

 54 

 58 

 40 

 32 

 51 

 51 

 51 

 49 

 49 

 48 

 42 

 33 

 58 

 59 

 40 

 40 

 26 

 33 

 32 

 39 

 44 

 40 

 45 



°F. 

 47.5 

 39.1 

 43.8 

 40.8 

 39.4 

 39.2 

 38.4 

 36.8 

 37.8 

 43.4 

 52.4 

 43.3 

 33.7 

 32.5 

 34.7 

 43.2 

 44.0 

 33.9 

 24.9 

 35.2 

 44.5 

 40.6 

 36.8 

 40.5 

 44.2 

 37.2 

 30.3 

 42.4 

 49.2 

 30.5 

 31.2 

 17.9 

 18.5 

 24.0 

 30.1 

 41.6 

 36.2 

 37.4 





Nov. 3 











Cloudy. 







Nov. 6 







Nov. 7 





Do. 



Nov. 8 





Do. 



Nov. 9 





Do. 



Nov. 10 





Do. 



Nov. 11 





Light rain. 



Nov. 12 





Nov. 13 





Do. 



Nov. 14 







Nov. 15 





Do. 



Nov. 16 



1 

 1 



Do. 



Nov.17 



Do. 



Nov. 18 



Do. 



Nov. 19 





Do. 



Nov.20 





Do. 



Nov. 21 





Do. 



Nov. 22 





Do. 



Nov. 23 





Do. 



Nov. 24 





Do. 



Nov. 25 





Do. 



Nov . 26 







Nov. 27 





Do. 



Nov. 28 





Cloudy. 



Nov. 29 





Nov. 30 







Dec. 1 





Do. 



Dec. 2 





Do. 



Dec. 3 





Do. 



Pec. 4 





Do. 



Dec. 5 





Do. 



Dec.6 







Dec. 7 





Do. 



Dec. 8 





Do. 



Dec. 9 





Do. 









