36 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table VII. — imposition of first-brood moths of the grape-berry moth in stock jars at 

 ' North East. Pa., in 1909. . 



Xo. of 

 stock jar. 



Number 

 of motlis. 



Date of— 



Days— 



Emer- 

 gence of 

 moths. 



Eirst 

 ovipo- 

 sition. 



Last 

 ovipo- 

 sition. 



Before 

 ovipo- 

 sition. 



Of ovipo- 

 sition. 



Erom 

 emer- 

 gence to 

 last ovi- 

 position. 



1 



10 



21 



21 



4 



Aug. 18 

 Aug. 19 

 Aug. 20 

 Aug. 27 



Aug. 27 

 ...do 



...do 



Se-nt. 5 



Aug. 27 

 Sept. 8 

 Aug. 27 

 Sept. 5 



9 

 8 

 7 

 9 



1 

 13 

 1 



1 



9 

 20 



1 



2 



3 



4 



Av 

 Ma 

 Mu 



erage 



ximum . . . 

 limum 









8.2 

 9 



7 



4 



1 



9.2 



20 

 1 



Hibernation of first-brood pupae. — Toward the end of July before 

 the eggs of the second brood had been deposited a large number of 

 infested grape berries were collected in order to determine if all of the 

 first brood completed the cycle and emerged as adults, or if some of 

 them passed the winter as pupse. 



Tables VIII and IX give the record for 374 larvae. Deducting the 

 dead and parasitized individuals from this number, a complete record 

 of 321 specimens was secured. Two hundred and ninety-two adults 

 emerged from July 29 to August 15. After the latter date no adults 

 emerged. Twenty-nine live pupae failed to transform and hibernated. 



Table VIII. — The relative number of transforming and wintering individuals of the first 

 brood of the grape-berry moth, North East, Pa.. 1909. 









Number of— 





Num- 

 ber of 

 larvae. 



Date 

 larvse 



left 

 berry. 











Moths 

 emerged. 



Larvse 

 hiber- 

 nating. 



Larvae 

 para- 

 sitized. 



Dead. 



19 



July 29 



13 











6 



20 



Julv 30 



20 















13 



Julv 31 



12 











1 



21 



Aug. 1 



21 















16 



Aug. 2 



14 











2 



32 



Aug. 3 



30 







1 



1 



13 



Aug. 4 



10 







2 



1 



18 



Aug. 5 



12 







2 



4 



50 



Aug. 6 



45 







1 



4 



23 



Aug: 7 



19 







1 



3 



36 



Aug. 8 



30 



2 







4 



25 



Aug. 9 



20 







1 



4 



32 



Aug. 10 



24 



1 



1 



6 



15 



Aug. 11 



10 



3 



1 



1 



13 



Aug. 12 



11 



1 



1 



o 



1 



Aug. 15 



1 















10 



Aug. 26 







9 







1 



7 



Sept. 11 







7 











5 



Sept. 13 







4 







1 



3 



Sept. 12 







1 







2 



2 



Sept. 18 







1 







1 



