18 



BULLETIN 932, U. S. DEPARTMENT OF AGRICULTURE. 



graph, figure 3. By further reference to this figure it will be seen 

 that the average daily temperatures from June 3 to June 7 were 

 relatively low and that during this period the moths did not de- 

 posit very freely. With the rise in temperature from June 7 to 10. 

 the moths were much more active and deposited 828 eggs on June 8, 

 1,106 eggs on June 9, and the maximum number of eggs. 1.379, on 

 June 10. The average temperature was also high on June 11, but 

 the deposition of eggs was notably less than on the preceding days. 

 Following the crest of egg deposition, the number daily deposited 

 gradually diminished, except on Jime 19, when 561 eggs were laid. 



Table VIII. — Time of deposition. length of incubation, and time of hatching of 

 eggs of the first brood of the codling moth. Grand Junction, Colo., 1915. 



Obser- 

 vation. 



Num- 



Date- 



Appearance of— 



Incu- 

 bation 

 period. 



ber of 



eggs. 



Deposit- 

 ed. 



Red 

 ring. 



%t HatcM - 



Red 

 ring. 



Black 

 spot. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



s 



19 

 20 

 21 

 22 



23 

 24 

 25 

 26 



07 



28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 

 46 

 47 

 48 

 49 

 50 

 51 

 52 

 53 



15 



10 



2 



20 

 5 

 1 

 4 

 2 

 1 

 5 

 8 



5 



39 

 12 



1 

 1 



45 

 22 

 34 

 14 



J 



20 

 136 

 140 



65 



19 



42 



8 



284 



90 



2 



187 



157 



41 



5 



120 



51 

 162 

 299 



19 

 367 



57 



11 



161 

 2 



324 

 43 

 30 



Mav 13 

 ...db 



Mav 14 

 ...db 



Mav 15 

 ...do 



May 16 

 do.... 



Mav 17 

 db 



May 16 

 "May* 16* 



'May"i7* 

 "May "22" 

 "May "23* 



May x.5 

 'May* *27* 

 "May*2s" 

 "May* 29* 



May* "§6 



Mav 27 

 Mav 2^ 



...db 



Mav 29 



...db 



Mav 30 



...db 



Mav 31 



...db 



June 1 



...do.... 

 June 2 

 June 1 

 June 2 

 June 3 

 June 4 

 June 5 

 June 2 

 June 3 

 June 4 

 June 5 

 June 6 

 June 7 

 June 4 

 June 5 

 June 6 

 June 7 



...do.... 

 June 8 

 June 9 

 June 8 

 June 9 

 June 8 

 June 9 



...do.... 

 June 10 

 June 11 

 June 10 

 June 11 

 June 10 

 June 11 

 June 12 

 June 11 

 June 12 

 June 13 

 June 12 

 June 13 

 June 14 

 June 13 

 June 14 

 June 15 

 June 14 

 June 15 



Days. 

 3 



Days. 



12 



Davs. 

 i4 

 15 

 14 

 15 

 14 

 15 

 14 

 15 

 14 

 15 

 14 

 15 

 11 

 11 

 12 

 13 

 14 

 10 

 11 

 12 

 13 

 14 

 15 

 11 

 12 

 13 

 14 

 13 

 14 

 15 

 13 

 14 

 12 

 13 

 12 

 13 

 14 

 12 

 13 

 11 

 12 

 13 

 11 

 12 

 13 

 11 

 12 

 13 

 11 

 12 

 13 

 11 

 12 



2 



13 



2 



13 



6 



13 



6 



13 



Mav IS 

 .do 



May 27 



May 31 



9 



13 



Mav 21 



Mav 22 



db 



Mav 27 



May 2S 



Mav 31 



...do 



6 

 6 



10 

 9 



do . . 











do ... 











Mav 23 

 do 



May 28 



June 1 



5 



9 



do 











.do 











.do 











.do 











Mav 24 

 db 



May 29 



June 1 



5 



8 



do 











do . 











Mav 25 

 do .. 



May 29 



June 4 



4 



10 



do .. 











Mav 20 



May 30 



June 4 



4 i 9 



Mav 27 

 db 



May 31 



June 7 



4 



11 



Mav 28 

 db 



May 31 



June 7 



3 



10 



do 









Mav 29 



...do.... 



Mav 30 



do 



June 1 

 June 3 



June 8 

 June 9 



3 1 10 



4 10 



do 









Mav 31 

 db 



June 3 



June 10 



3 | 10 



do 









June 1 

 do 



June 4 



June 10 



3 j 9 



do 







June 2 j June 8 



June 11 



6 | 9 



do 





1 







June 11 



::::::::! s 



29 



...do.... 











