THE CODLING MOTH IN THE YAKIMA VALLEY. 



67 



These tables show that normally the first brood of moths deposit 

 most of their eggs between 3 p. m. and 9 p. m., just as is the case 

 with the spring brood of moths. It will be noted, however, that 

 within this 6-hour period first-brood moths deposit more eggs after 

 6 p. m. than before, while the reverse is true of the spring brood. 

 This is probably due to the fact that evening temperatures in August 

 are higher than those in June. The first brood of moths of 1919 were 

 an exception to this apparent rule, depositing more eggs between 

 noon and 3 p. m. than between 6 p. m. and 9 p. m., and the maximum 

 number being found at 6 p. m. instead of at 9 p. m. During the 

 period of observation in 1919 the weather was cooler than usual, and 

 quite windy, at least during the latter part of nearly every day. This 

 possibly caused the moths to oviposit earlier than they would during 

 the normal, hot, nearly windless weather which obtained at the time 

 observations were made in 1920 and 1921. 



oviposition by individual moths. 



In order to ascertain the number of eggs deposited by individual 

 female codling moths, freshly emerged moths were paired and each 

 pair placed in a cloth-covered jelly glass, containing moist sand, a 

 sponge saturated in brown sugar solution, and fresh pear leaves, as 

 in the other oviposition experiments. These cages were examined 

 daily, the number of eggs recorded, and fresh leaves and sugar 

 solution supplied. 



Table 57. — Oviposition by individual codling moths of the spring brood, Yakima, 



Wash., 1919. 



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Date of — 



Number of days — 



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■— i © 



o"3 



5.2 § 

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SB'S 



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*s 



B g 

 .28 

 "3t2 

 ■8° 



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 -Oft 



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3 £ o 



o 

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9 M 



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9 ° 



B u 

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& H, B 



© M.S 



> ©+^ 

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S o 



ag* • 

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3 u, 

 |»1 



tio. 5 

 3 



6 



H 



H 



o 

 ft 



li 



03 





6 

 ft 



°i 



£s 

 "3 



m 



b-b 



T* O 



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§4 J 



ZS'v 

 © d 



a If 



gtto 



1 



2 

 3 



4 

 5 

 6 



7 

 8 

 9 

 10 



11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 



May 20 

 ...do 



May 21 

 ...do 







June 3 

 June 7 

 June 23 

 June 21 

 June 9 

 June 4 

 June 6 

 June 8 

 May 25 

 June 4 

 June 12 

 June 5 

 . .do 









Days. 



Days. 

 14 

 18 

 33 

 31 

 19 

 14 

 16 

 17 

 3 

 11 

 19 

 12 

 12 

 17 



1 



10 



2 



5 



• 



4 

 8 

 5 

 1 



1 





 1 



86 

 

 

 4 

 

 

 

 

 13 

 

 

 13 

 26 

 26 

 1 

 

 3 

 

 







May 24 

 May 31 



May 24 

 June 21 



4 

 10 



1 



22 



4 

 31 



14 

 2 



1.0 



8.6 



1 

 38 



...do 









L_. 







...do 

 ...do 



May 24 



June 2 



3 



10 







12 



2 



2.0 



3 



May 22 

 ...do 































May 24 



...do 



...do 















June 4 



June 11 



11 



8 



18 



1 



2.6 



7 



...do 

















...do 

 ...do 



...do 



May 25 

 ...do 



June 1 

 May 31 

 June 2 

 ...do 



June 7 

 June 14 

 June 7 

 June 2 



June 10 



0) 

 June 14 

 June 6 

 June 8 

 June 14 

 June 2 

 June 10 



8 

 7 

 9 

 8 



7 

 15 

 6 

 1 



14 

 21 



14 



8 



3 



3.3 

 3.3 

 5.2 



1.0 



4 

 8 

 11 



1 



7 

 4 



21 

 12 

 14 

 20 

 8 

 16 



...do 



...do 



June 13 



June 13 



19 



1 



19 



1 



3.0 



3 



...do 















j 



























37 



173 















... .. . 



I 



1 Date of death unknown. 



