146 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table XXIX. — Spring brood of pupae. Length of the pupal stage of overwintering 

 larva} collected from banded trees in 1910 and reared in vials. 



No. of 

 indi- 

 vidual. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



L2 



13 



11 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



32 



33 



Pupa- 

 tion. 



Mar. 

 Mar. 

 Mar. 

 ...do. 

 Mar. 

 Mar. 

 ...do. 

 ...do. 

 ,.do. 

 ...do. 

 Mar. 

 Mar. 

 ...do. 

 ...do. 

 Mar. 

 Mar. 

 Mar. 

 ...do. 

 ...do. 

 ...do. 

 ...do. 

 ..do. 

 Mar. 

 ..do. 

 ..do. 

 ..do. 

 Mar. 

 ..do. 

 Mar. 

 ..do. 

 ..do. 

 ..do.. 

 ..do.. 



Emer- 

 gence. 



May 6 

 Apr. 26 

 Apr. 29 

 Apr. 28 

 Apr. 30 



May 



May 3 

 May 2 

 May 1 

 Apr. 30 

 May 4 

 Mav 5 

 May 8 

 May 5 

 ...do.... 

 May 8 

 ...do.... 

 May 9 

 May 10 

 May 6 

 May 11 

 May 10 

 May 11 

 May 10 



...do 



May 12 

 May 13 

 May 15 

 May 13 

 May 10 



..do 



..do 



..do 



Sex. 



Length 



of 

 pupal 



stage. 



Days. 

 43 

 41 

 43 

 42 

 43 

 42 

 44 

 43 

 43 

 41 

 44 

 44 

 45 

 42 

 41 

 42 

 41 

 42 

 43 

 39 

 44 

 43 

 43 

 42 

 43 

 44 

 45 

 46 

 43 

 46 

 46 

 46 

 46 



No. of 



indi- 

 vidual. 



34 



35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 14 

 45 

 46 

 47 

 48 

 4!) 

 50 

 51 

 52 

 53 

 54 

 55 

 56 

 57 

 58 

 59 

 60 

 61 

 62 

 63 

 64 

 65 

 66 



Date of— 



Pupa- 

 tion. 



Mar. 31 



...do 



...do 



...do 



...do 



Apr. 1 



...do 



...do 



...do 



Apr. 3 



...do 



Apr. 5 

 Apr. 4 

 Apr. 5 



...do 



Apr. 8 



...do 



Apr. 9 



...do 



..do 



Apr. 10 

 Apr. 11 

 Apr. 10 



..do 



..do 



Apr. IS 



..do 



Apr. 20 

 Apr. 21 

 Apr. 22 

 Apr. 23 



..do 



May 11 



Emer- 

 gence. 



May 

 May 

 May 

 May 

 May 

 ...do. 

 May 

 May 

 May 

 May 

 May 

 May 

 ...do. 

 ...do. 

 ...do. 

 Mav 

 ...do. 

 May 

 May 

 May 

 May 

 ..do. 

 May 

 May 

 May 

 May 

 May 

 May 

 ..do. 

 May 

 June 

 ..do. 

 June 



Sex. 



Length 



of 

 pupal 



Days. 

 46 

 42 

 47 

 48 

 46 

 45 

 47 

 49 

 56 

 46 

 47 

 47 

 47 

 46 

 46 

 44 

 44 

 42 

 43 

 39 

 42 

 41 

 40 

 37 

 44 

 38 

 40 

 39 

 38 

 38 

 39 

 39 

 31 



Table XXX shows the variations in the length of the pupal period 

 for 156 individuals as recorded in Tables XXVIII and XXIX: 



Table XXX.- 



-Spring brood of pupx. Variation in the length of the pupal period as 

 recorded in Tables XXVIII and XXIX. 



Tables XXVIII and XXIX show that individuals which pupated 

 early usually remained longer in the pupal state than those which 

 later became pupae. 



Temperature conditions. — The temperature conditions influencing 

 the pupal periods of the spring brood of pupre are shown in the follow- 

 ing table: 



