18 



BULLETIN 932, IT. 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. TVith 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 June 19, when 564 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- 

 ber of 



eggs. 





Da1 



e — 



Appearance of — 



Incu- 

 bation 

 period. 



Deposit- 

 ed. 



Red 

 ring. 



Black 

 spot. 



Hatched. 



Red 

 ring. 



Black 

 spot. 



1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 

 46 

 47 

 48 

 49 

 60 

 51 

 52 

 53 



15 

 10 

 2 

 20 

 5 

 1 

 4 

 2 

 1 

 5 

 8 

 2 



5 



39 



12 



1 



1 



45 



22 



34 



14 



3 



7 



20 



136 



140 



05 



19 



42 



8 



284 



90 



2 



187 



157 



41 



5 



120 



51 



162 



2:0 



19 



307 



57 



11 



7 



161 



2 



324 



43 



30 







29 



Mav 13 

 ...do .. 



May 16 



May ^5 



May 27 

 May 28 



...do 



May 29 



...do 



May 30 



...do 



May 31 



...do 



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 11 

 June 15 



Days. 

 3 



Days. 

 12 



Days. 

 14 

 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 



May 14 

 ...do. . 



May 16 



May 27 



2 



13 



May 15 

 .. do . . 



May 17 



May 28 



2 



13 



May 16 

 ....do . 



May 22 



May 29 



6 



13 



May 17 

 .. do ... 



May 23 



laay 30 



6 



13 



May IS 

 . .db 



May 27 



May 31 



9 



13 



May 21 

 May 22 

 ...do 



May 27 

 May 28 



May 31 

 ...do.... 



6 

 6 



10 

 9 



. .do 











do 











May 23 

 ...do 



May 28 



June 1 



5 



9 



.do 











.do 











.do 











do 











May 24 

 ..do 



May 29 



June 1 



5 



8 



do ... 











do 











May 25 

 do ... 



May 29 



June 4 



4 



10 



.do 











May 20 

 do ... 



May 30 



June 4 



4 



9 



May 27 

 .do.... 



May 31 



June 7 



4 



ii 



Mav 28 

 .do 



May 31 



June 7 



3 



10 



do 











May 29 

 do 



June 1 



June 8 



3 



10 



Mav 30 

 do 



June 3 



June 9 



4 



10 



do 











Mav 31 

 db 



June 3 



June 10 



3 



10 



do 











June 1 

 do 



June 4 



June 10 



3 



9 



do 











June 2 

 do 



June 8 



June 11 



6 



9 



do 











June 3 



..do.... 





June 11 





8 





