34 



DECIDUOUS FKUIT INSECTS AND INSECTICIDES. 



Table V. — Time of cocooning and the length of the pupal stage of the first brood of the 

 grape-berry moth at North East Pa., in 1909. 



Number of 

 larvse. 



Larvae 

 left 

 fruit. 



Moths 

 emerged. 



Days— 



Number of 

 larvse. 



Larvse 

 left 

 fruit. 



Moths 

 emerged. 



Days— 



In co- 

 coon. 



Total. 



36 



112 



30 



25 



10 



22 



13 



56 



135 



32 



17 



112 



60 



16 



196 



135 



39 



112 



30 



10 



26' 



1S2 



75 



48 



26 



42 



30 



32 



56 



75 



51 



247 



266 



64 



In co- 

 coon. 



Total. 



3 



July 29 



...do 



...do 



...do.... 



July 30 



...do 



...do.... 



...do 



...do 



...do 



...do 



July 31 

 ...do 



Aug. 10 

 Aug. 14 

 Aug. 13 

 Aug. 23 

 Aug. 9 

 Aug. 10 

 Aug. 12 

 Aug. 13 

 Aug. 14 

 Aug. 15 

 Aug. 16 

 Aug. 14 

 Aug. 15 

 Aug. 16 

 Aug. 15 

 Aug. 16 

 Aug. 15 

 Aug. 16 

 Aug. 17 

 Aug. 13 

 Aug. 16 

 Aug. 17 

 Aug. 18 

 Aug. 19 

 Aug. 17 

 Aug. 18 

 Aug. 19 

 Aug. 20 

 Aug. 19 

 Aug. 20 

 Aug. 22 

 Aug. 19 

 Aug. 20 

 Aug. 22 



12 

 16 

 15 

 25 

 10 

 11 

 13 

 14 

 15 

 16 

 17 

 14 

 15 

 16 

 14 

 15 

 13 

 14 

 15 

 10 

 13 

 14 

 15 

 16 

 13 

 14 

 15 

 16 

 14 

 15 

 17 

 13 

 14 

 16 



3 



Aug. 6 



Aug. 7 



...do 



...do 



...do 



...do.... 

 ...do 



Aug. 8 



...do 



...do 



...do.... 

 ...do.... 



Aug. 9 



...do 



...do 



...do.... 



Aug. 10 



...do 



...do 



...do 



Aug. 24 is 



54 

 26 

 14 



105 

 16 



102 

 20 

 15 

 96 



289 

 36 

 19 

 13 

 80 



204 

 36 

 12 



160 



153 



144 

 19 

 11 

 14 

 30 

 64 

 17 

 18 

 30 

 48 

 51 

 20 



7 



2 



1 



1 



2 



1... ...... 



6 



1. 



1 



6 



17 



2 



1 



1 



Aug. 20 

 Aug. 21 

 Aug. 22 

 Aug. 23 

 Aug. 24 

 Aug. 27 

 Aug. 23 

 Aug. 24 

 Aug. 25 

 Aug. 26 

 Aug. 27 

 Aug. 22 

 Aug. 25 

 Aug. 26 

 Aug. 27 

 Aug. 22 

 Aug. 26 

 Aug. 27 

 Aug. 28 

 Aug. 29 

 Aug. 22 

 Aug. 25 

 Aug. 26 

 Aug. 27 

 Aug. 28 

 Aug. 29 

 Aug. 27 

 Aug. 28 

 Aug. 29 

 Sept. 1 



13 

 14 

 15 

 16 

 17 

 20 

 15 

 16 

 17 

 18 

 19 

 13 

 16 

 17 

 18 

 12 

 16 

 17 

 18 

 19 

 11 

 14 

 15 

 16 

 17 

 18 

 15 

 16 

 17 

 20 



2 



1 



4 



9 



2 



1 



8.. 



4 



1 



14 



9 



3 



...do.... 



Aug. 1 

 ...do 



Aug. 2 



...do 



...do 



Aug. 3 



...do 



do 



5 



12 



2 



1 



8 



2 



1 



10 



9 



8 



2 



13 



1... ....... 



...do 



Aug. 11 



...do 



...do 



...do 



5 



3 



2 



...do 



...do 



Aug. 4 

 .do 



1 



2 



4 



3 . 



1 



.:.dO 



2 



2 



4 



...do 



...do 



Aug. 5 



...do 



...do.... 



Aug. 6 

 ...do 



. do ... . 



2.......... 



...do 



Aug. 12 



...do 



...do 



...do 



\ 3 



3 



5 



3 



19 



19 



4 



285 





4,334 









Average . . . 

 Maximum . 

 Minimum . 



Days. 



. 15.2 

 25 

 10 



Time of emergence of first-brood moths. — The material for securing 

 this emergence record of the first-brood moths was taken in part from 

 the large rearing cage in which the eggs had been deposited by earliest 

 emerging moths in the spring. Infested grape berries were removed 

 from the vine in this cage a short time before the larvae had reached 

 their full growth. The rest of the material was collected from the 

 open vineyard on August 2, 9, and 10. Since larvae were found in 

 webbed clusters in the open vineyard several days before any larvae 

 were found in the rearing cage it is probable that a few of the earliest 

 full-grown larvae of the first brood had escaped from the fruit before 

 it was collected to secure this record, thus making the date of the 

 first-emerging moth in this record a few days later than actually 

 occurred under field conditions. Since the date of the last moth of 

 the spring brood to emerge in our rearing jars was August 4 ; and the 

 date of the first moth to appear from the first-brood rearing material 

 was July 31, there is evidently an overlapping in the emergence of 



