48 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table XL VIII.- — Length of the pupal stage of the summer brood, Douglas, Mich., 1911. 



o ca 

 . > 

 o 



Date of- 



Leaving 

 fruit. 



July 6 

 ..do.. 

 ...do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do... 

 ..do— 

 ..do... 

 ..do..... 

 July 9 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 



..do 



..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 July 12 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 



...do 



..do 



..do 



..do 



July 12 



..do 



..do 



..do 



Pupa- 

 tion. 



July 12 

 July"i2" 



July 12 

 July" 12 



July 9 

 July 10 

 ..do.... 

 ...do... . 

 ...do... . 

 ...do.... 

 ...do— - 

 ...do.... 

 ...do.... 

 ...do— 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ... do- 

 July 11 



...do 



...do— 

 ...do.... 

 ...do.... 

 ...do— 

 ...do— 

 ...do— 

 ...do— 

 ...do— 

 ...do- 

 July 12 

 July 11 

 .. do.... 

 July 17 

 July 14 

 ...do... . 

 ...do— 

 ...do— 

 ...do— 

 ...do.... 

 ...do.... 



...do 



July 15 

 ...do.... 

 ...do- 

 July 17 

 ...do.... 

 July 18 

 ...do.... 

 ..do— 

 ...do— 

 ..do.... 

 ..do.— 

 ..do- 

 July 19 

 ..do... 

 ..do.... 

 ..do.... 

 ..do.... 

 ..do.... 

 July 20 

 ..do— 

 ..do.... 

 ..do.... 

 ..do- 

 July 21 

 ..do.... 

 ..do- 



July 23 

 ..do.... 



Emer- 

 gence of 

 moth. 



July 22 

 July 26 

 July 23 



...do 



July 25 

 July 23 

 July 26 

 July 25 

 July 24 



...do 



July 23 



...do 



...do 



July 26 



...do 



July 28 

 July 27 



...do 



...do 



July 26 

 Aug. 1 

 July 27 

 July 26 



...do : 



July 27 



...do 



July 28 

 July 26 

 July 28 

 July 27 

 July 30 

 Aug. 4 

 July 30 

 July 29 

 July 31 

 July 29 

 July 30 

 July 29 



...do 



July 30 

 July 31 



...do 



...do 



Aug. 2 

 July 31 

 Aug. 1 

 Aug. 2 



...do 



...do 



Aug. 3 



...do 



Aug. 4 

 Aug. 2 

 Aug. 3 



..do 



...'do 



...do 



Aug. 4 

 Aug. 3 

 Aug. 4 



..do 



..do 



Aug. 5 

 Aug. 4 

 Aug. 5 

 ..do 



Aug. 5 

 ..do 



Days- 



Ma k 7 ng ' Pupal 

 cocoon. P eriod ' 



Date of- 



Leaying 

 fruit. 



July 14 



July 14 



...do 



July 15 

 July 16 



July 17 

 ...do— 

 ...do— 



...do... . 

 ...do— 



...do... . 

 ...do— 

 ...do.... 

 ...do— 

 .do— 

 ...do.... 

 July 18 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do... . 

 ...do.... 

 ...do— 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do.... 

 ...do... . 

 ...do.... 

 ...do— 

 ...do... . 

 ...do— 

 ...do... . 

 ...do... . 

 ...do... . 

 ...do... . 

 ...do- 

 July 19 

 ...do... 

 July 20 

 July 21 

 ...do — 

 ...do.... 

 July 23 

 ...do.... 

 ...do.... 

 ...do.... 

 July 24 

 July 25 

 July 27 

 July 29 



Ayerage . . . 

 Maximum 

 Minimum . 



Pupa- 

 tion. 



July 23 



...do 



...do 



Aug. 1 



..do 



July 21 

 July 24 

 ..do 



July 21 



..do 



July 23 



..do 



..do 



July 24 

 July 25 

 July 26 

 July 27 

 July 28 



..do 



July 24 



..do 



July 25 

 ..do— . 

 ..do..... 

 ..do..... 

 July 26 

 ..do..... 

 ..do.... 

 ..do.... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 July 27 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do..... 

 July 28 

 ..do..... 

 ..do..... 

 ..do..... 

 July 29 



..do 



..do..... 

 ..do..... 

 July 27 



July "29 



July 30 

 Aug. 2 

 Aug. 6 

 July 31 



..do 



..do..... 

 Aug. 8 

 Aug. 1 

 Aug. 2 

 Aug. 1 

 Aug. 6 



Emer- 

 gence of 

 moth. 



Aug. 5 



Aug. 6 



Aug. 7 



Aug. 14 



Aug. 15 



Aug. 5 



Aug. 7 

 ..do— 



Aug. 5 



-.do 



Aug. 6 

 Aug. 7 

 Aug. 8 

 Aug. 3 

 Aug. 7 



..do 



Aug. 8 

 Aug. 9 

 Aug. 10 

 Aug. 7 



..do 



Aug. 6 

 Aug. 7 

 ..do.... 

 ..do..... 

 ..do..... 

 ..do..... 

 ..do— 

 ..do— 

 ..do.... 

 ..do— 

 Aug. 8 



..do 



..do— 

 Aug. 7 

 Aug. 8 

 ..do— 

 ..do— 

 ..do— 

 ..do.... 

 Aug. 10 

 Aug. 11 

 Aug. 7 

 Aug. 9 

 ..do.... 

 ..do.... 

 Aug. 8 

 Aug. 9 

 Aug. 10 

 ..do.... 

 Aug. 8 

 Aug. 5 

 Aug. 9 

 ..do— 

 Aug. 14 

 Aug. 18 

 Aug. 12 

 ..do.... 

 Aug. 18 

 Aug. 11 

 Aug. 15 

 Aug. 16 

 Aug. 14 

 Aug. 22 



Days- 



Making 



of 

 cocoon 



Pupal 

 period. 



FIRST BROOD OF PUP.E OR SUMMER PUPJE. 



Time of pupation. — The time of pupation as represented in figure 

 20 has been determined on the basis that the time and rate of emer- 

 gence of the moths must be in close relation and in direct proportion 

 to the time and rate of pupation. Observations on pupation in the 

 rearing cages extended from July 6 to August 8. In the field, how- 



