154 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



FIRST BROOD OF MOTHS. 



Time of emergence. — On July 22 the first moths emerged from band 

 material collected July 6. The emergence reached its maximum 

 August 19 and continued on until September 29. Most of the moths, 



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Fig. 35.— Diagram showing emergence of first-brood moths, 1911. (Original.) 



however, emerged in August and the first few days in September. 

 As can be seen from figure 35 and Table XLIII the emergence is drawn 

 out so that it covers a period of 70 days: 



Table XLIII. — Emergence of moths of the first brood: Material from banded trees. 



Date of 



Number 



Date of 



Number 



Date of 



Number 



Date of 



Number 



emergence. 



of moths. 



emergence. 



of moths. 



emergence. 



of moths. 



emergence. 



of moths. 



July 22 



2 



Aug. 11 



2 



Aug. 25 



3 



Sept 9 



4 



July 25 



1 



Aug. 12 



4 



Aug. 26 



5 



Sept. 10 



3 



July 27 



3 



Aug. 13 



5 



Aug. 27 



3 



Sept. 12 



1 



July 30 



3 



Aug. 14 



7 



Aug. 28 



2 



Sept. 13 



2 



July 31 



2 



Aug. 15 



3 



Aug. 29 



.6 



Sept. 14 



1 



Aug. 1 



5 



Aug. 16 



2 



Aug. 30 



9 



Sept. 16 



1 



Aug. 2 



1 



Aug. 17 



9 



Aug. 31 



1 



Sept. 20 



2 



Aug. 3 



1 



Aug. 18 



5 



Sept. 1 



3 



Sept. 22 



1 



Aug. 5 



3 



Aug. 19 



12 



Sept, 2 



4 



Sept. 29 



1 



Aug. 6 

 Aug. 7 



2 



Aug. 20 

 Aug. 21 



g 



Sept, 4 

 Sept. 5 









2 



9 



3 





157 



Aug. 8 



6 



Aug. 22 



6 



Sept. 6 



1 







Aug. 9 



4 



Aug. 23 



6 



Sept. 7 



3 







Aug. 10 



4 



Aug. 24 



5 



Sept, 8 



1 







Oviposition period. — Nearly all of the moths which emerged were 

 utilized for securing eggs by confining them in Riley cages- in which 

 apples had been suspended on strings. The moths oviposited readily 

 and a large number of eggs were secured. The first eggs were ob- 

 tained on August 10, or 19 days after the first moths emerged, which 

 was on July 22. The earliest moths did not oviposit in the cages but 

 it is probable eggs were present in the field about the middle of July. 

 The oviposition period continued throughout August and September. 



