



THE CODLING MOTH IN MICHIGAN. 



75 



The time of emergence of the adult parasites coincides with the 

 time of emergence of the two broods of the codling moth. (Tables 

 LXXII and LXXIII.) Like the host, the parasite is evidently two- 

 brooded or possibly has a partial second brood. 



Table LXXII. — Time of emergence of the spring brood and the summer brood of Asco- 

 gaster carpocapsx at Douglas, Mich., 1910. 



SPRING BROOD. 



M umber 

 of para- 

 sites. 



Date of 

 emer- 

 gence. 



Number 

 of para- 

 sites. 



Date of 

 emer- 

 gence. 



Number 

 of para- 

 sites. 



Date of 

 emer- 

 gence. 



Number 

 of para- 

 sites. 



Date of 

 emer- 

 gence. 



2 

 9 

 5 

 11 

 10 



June 22 

 June 23 

 June 24 

 June 25 

 June 26 



9 

 2 

 14 

 5 

 3 



June 27 

 June 28 

 June 29 

 June 30 

 July 1 



4 

 1 



5 

 3 



1 



July 2 

 July 3 

 July 5 

 July 6 



July 8 



1 

 1 



July 9 

 July 15 



86 



SUMMER BROOD. 



1 



1 



2 

 5 

 1 

 3 

 2 

 4 



July 26 

 July 30 

 Aug. 2 

 Aug. 4 

 Aug. 5 

 Aug. 7 

 Aug. 8 

 Aug. 10 



2 

 3 



I 

 \ 



3 

 2" 



Aug. 11 

 Aug. 12 

 Aug. 13 

 Aug. 14 

 Aug. 15 

 Aug. 16 

 Aug. 17 

 Aug. 18 



1 

 5 

 6 

 2 

 2 

 3 

 1 

 1 



Aug. 19 

 Aug. 20 

 Aug. 22 

 Aug. 23 

 Aug. 24 

 Aug. 25 

 Aug. 26 

 Aug. 27 



3 



1 

 2 



Aug. 29 

 Aug. 30 

 Sept. 5 



72 



Table LXXIII. — Time of emergence of spring and summer broods of Ascogaster car- 



pocapsx, at Douglas, Mich., 1911. 



SPRING BROOD. 



Number 

 of para- 

 sites. 



Date of 



emer- 

 gence. 



Number 

 of para- 

 sites. 



Date of 



emer- 

 gence. 



Number 

 of para- 

 sites. 



Date of 

 emer- 

 gence. 



Number 

 of para- 

 sites. 



Date of 



emer* 

 gence. 



1 

 4 



1 

 4 



i 



June 2 

 June 5 

 June 6 

 June 8 

 June 9 

 June 10 

 June 11 



3 



2 

 4 



I 



4 



June 12 

 June 13 

 June 14 

 June 15 

 June 16 

 June 17 

 June 18 



3 



I 



2 



6 



! 



June 19 

 June 20 

 June 21 

 June 22 

 June 23 

 June 24 

 June 26 



2 



I 



June 28 

 June 29 

 June 30 



83 









SUMMER 



BROOD 









1 



July 9 



6 



July 21 



5 



Aug. 4 



i 



Aug. 15 



3 



July 11 



1 



July 23 



1 



Aug. 6 



2 



Aug. 16 



1 



July 12 



2 



July 26 



1 



Aug. 7 



1 



Aug. 17 



3 



July 13 





July 28 



4 



Aug. 8 



1 



Aug. 18 



2 



July 14 



2 



July 30 



2 



Aug. 9 



1 



Aug. 20 



2 



Juiy 15 







July 31 



1 



Aug. 10 



2 



Aug. 22 



4 



July 16 



1 



Aug. 1 



2 



Aug. 11 



2 



Aug. 27 



1 



July 17 



2 



Aug. 2 



1 



Aug. 13 



1 



Sept. 3 



2 



July 19 



1 



Aug. 3 







Aug. 14 





















74 





The time and stage of the development when the codling moth 

 larvae become parasitized are not definitely known. Probably many 

 larvae are parasitized after they leave the fruit and while in search of 

 suitable places for the spinning of their cocoons. It is very evident 

 that many larvae are parasitized while still in the fruit, since adult 

 35215°— Bull. 115, pt 1—12 





