CODLING MOTH IN COLORADO. 



33 



-•■ 



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

 eggs of the second brood of the codling moth, G,rand Junction, Colo., 1915 — 

 Continued. 



Obser- 

 vation 

 No. 



Num- 

 ber of 

 eggs de- 

 posited. 



Date- 



Number 



of eggs 



hatched. 



Appearance of— 



Incu- 

 bation 

 period. 



De- 

 posited 



Red 

 ring. 



Black 

 spot. 



Hatched. 



Red 

 ring. 



Black 

 spot. 



76 

 77 

 78 

 79 

 80 

 81 

 82 

 83 

 84 

 85 

 86 

 87 

 88 

 89 

 90 

 91 

 92 

 93 

 94 

 95 

 96 

 97 

 98 

 99 

 100 

 101 

 102 

 103 

 104 

 105 

 106 

 107 

 108 

 109 

 110 

 111 

 112 

 113 

 114 

 115 

 116 

 117 

 118 

 119 

 120 

 121 



Total. 



Av... 



1,353 



Aug. 19 



Aug. 21 



Aug. 24 



Aug. 25 

 Aug. 26 



...do 



Aug. 27 



...do 



Aug. 28 



...do 



Aug. 29 

 Aug. 30 

 Aug. 31 

 Sept. 1 

 Aug. 31 

 Sept. 1 

 Sept. 2 

 Sept. 3 



...do 



Sept. 5 

 Sept. 3 

 Sept. 4 

 Sept. 5 



Sept. 6 

 Sept. 7 

 ...do.... 

 Sept. 8 

 Sept. 9 

 Sept. 8 

 Sept. 9 

 Sept. 10 



...do 



SeDt. 11 

 ...do.... 

 Sept. 12 

 Sept. 14 

 Sept. 15 

 Sept. 16 

 Sept. 15 

 Sept. 16 



...do 



Sept. 17 

 Sept. 18 

 Sept. 19 

 Sept. 20 



--.do 



Sept. 22 

 Sept. 24 



352 



947 



456 



616 



45 



1,341 



889 



504 



841 



278 



38 



407 



288 



325 



21 



282 



28 



146 



11 



45 



18 



59 



31 



133 



154 



19 



171 



93 



21 



30 



4 



22 



6 



22 



1 



1 



3 



1 



1 



1 



2 



2 



1 



2 



26 



1 



Days. 

 2 



Days. 

 5 



Days. 

 6 



7 

 6 

 7 

 6 

 7 

 6 

 7 

 7 

 7 

 8 

 6 

 7 

 7 

 8 

 7 

 9 

 6 

 7 

 8 

 7 

 8 

 9 

 8 

 9 

 10 

 8 

 9 

 10 

 9 

 10 

 9 

 10 

 9 

 10 

 11 

 9 

 10 

 9 

 10 

 10 

 10 

 11 

 10 

 10 

 9 



1,340 



Aug. 20 



Aug. 22 



Aug. 25 



2 



5 



1,490 



Aug. 21 



Aug. 24 



Aug. 26 



3 



5 



1,526 



Aug. 22 



Aug. 24 



Aug. 27 



2 



5 



895 

 343 



Aug. 23 

 Aug. 24 



Aug. 26 

 ...do 



Aug. 29 

 Aug. 30 



3 



2 



6 

 6 



702 



Aug. 25 



Aug. 27 



Aug. 30 



2 



5 



412 



Aug. 26 



Aug. 28 



Sept. 1 



2 



6 



348 



Aug. 27 



Aug. 28 



Sept. 1 



1 



5 



224 



Aug. 28 



Aug. 29 



Sept. 2 



1 



5 















129 



Aug. 29 



Aug. 31 



Sept. 4 



2 



6 















309 



Aug. 30 



Sept. 1 



Sept. 6 



2 



7 















300 



Aug. 31 



Sept. 1 



Sept. 7 



1 



7 















35 



Sept. 1 



Sept. 3 



Sept. 8 



2 



7 



29 



Sept. 2 



Sept. 6 



Sept. 10 



4 



8 



28 



Sept. 5 



Sept. 8 



Sept. 13 



3 



8 















4 



Sept. 6 



Sept. 8 



Sept. 14 



2 



8 



7 



Sept. 7 



Sept. 9 



Sept. 15 



2 



8 



2 

 3 



Sept. 8 

 Sept. 9 



Sept. 11 

 ...do 



Sept. 17 

 ...do 



3 



2 



9 



8 



2 



32 



1 



Sept. 10 

 Sept. 12 

 Sept. 15 



Sept. 12 

 Sept. 14 

 Sept. 18 



Sept. 18 

 Sept. 20 

 Sept. 23 



2 

 2 

 3 



8 

 8 

 8 



38,485 











35,804 



































1.85 

 4 

 1 



5.54 

 8 

 3 



7.22 

 11 

 6 













































Length of incubation. — A record of the observations of the em- 

 bryological development and incubation period of the eggs of the 

 second brood will be found in Table XX. It will be observed that 

 the length of the incubation period was increased toward the latter 

 part of the season, as the temperatures became lower. The average 

 number of days from the time of deposition to the appearance of the 

 red ring was 1.85, maximum 4 days, and minimum 1 day; the average 

 number of days from the time of deposition to the appearance of the 



19552°— 21 3 



