THE CODLING MOTH IN MICHIGAN. 



17 



FIRST BROOD OF PUP^ OR SUMMER PUP^E. 



Time of pupation. — The time of pupation may be determined from 

 the records of the pupal stage and the emergence of moths of the 

 same brood (see fig. 11) since it is to be expected that the rate of 

 pupation approximates that of the emergence of the moths resulting 

 from these pupae. 



Table XIV. — Length of the pupal stage of the first brood, Douglas, Mich., 1910; sum- 

 mary of Table XIII. 



Number 

 of obser- 

 vations. 



Larvae in 

 cocoon. 



Number 

 of obser- 

 vations. 



Pupal 

 period. 



2 

 11 

 19 

 15 

 25 

 17 

 13 

 7 

 2 

 4 

 2 



Days. 

 3 

 4 

 5 

 6 



8 

 9 

 10 

 11 

 12 

 15 



1 



2 



6 



16 



38 



33 



11 



2 



1 



1 



1 



4 



1 



Days. 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 25 



Length of pupal stage (Tables XIII and XIY). — The pupal stage 

 of the first brood varied from 9 to 25 days with an average of 13.6 

 days. The experiments of Table XIII include observations taken 

 during the greater part of the pupal period. 



Table XV. — Time of emergence of moths of the summer brood from band-collected mate- 

 rial of 1910. 



Date of 

 emergence. 



Number of motlis from band 

 records at — ' 



Date of 

 emergence. 



Number of moths from band 

 records at— 



New 

 Rich- 

 mond. 



Sauga- 

 tuck. 



Lake 

 Shore. 



Total. 



New 

 Rich- 

 mond. 



Sauga- 

 tuck. 



Lake 

 Shore. 



Total. 



July 26 

 July 27 

 July 28 

 July 29 

 July 30 

 July 31 

 Aug. 1 

 Aug 2 

 Aug. 3 

 Aug. 4 

 Aug. 5 

 Aug. 6 

 Aug. 7 

 Aug. 8 

 Aug. 9 

 Aug. 10 

 Aug. 11 

 Aug. 12 

 Aug. 13 

 Aug. 14 

 Aug. 15 



2 

 2 

 4 

 4 

 4 

 7 

 9 

 2 



4 

 1 



11 

 6 

 12 

 10 

 3 

 6 

 6 

 6 

 8 

 3 







2 

 2 

 10 

 11 

 8 

 9 



28 

 25 

 25 

 13 

 8 

 24 

 13 

 24 

 23 

 18 

 12 

 14 

 18 

 26 

 25 



Aug. 16 

 Aug. 17 

 Aug. 18 

 Aug. 19 

 Aug. 20 

 Aug. 21 

 Aug. 22 

 Aug. 23 

 Aug. 24 

 Aug. 25 

 Aug. 26 

 Aug. 27 

 Aug. 28 

 Aug. 29 

 Aug. 30 

 Aug. 31 

 Sept. 1 

 Sept. 7 

 Sept. 8 



Total.. 



5 

 3 



4 

 2 

 6 



8 

 3 



2" 



i'" 



1 

 1 



14 

 10 

 3 

 11 

 9 

 10 

 21 

 8 

 6 

 6 

 5 



5 



1 

 2 



12 

 12 

 13 

 10 

 10 

 8 

 28 

 5 

 9 

 4 



6" 



5 

 2 

 1 



31 

 25 

 20 

 23 

 25 

 18 

 57 

 16 

 15 

 10 

 5 

 8 

 5 

 6 

 5 

 2 

 1 

 5 

 1 







"i" 



2" 



5 



16 

 8 

 3 

 4 

 5 

 . 4 

 4 

 4 

 9 

 1 

 1 

 7 

 9 

 5 



6 

 6 

 4 

 ------ 



7 

 10 

 6 

 3 

 8 

 3 

 8 

 9 

 6 

 5 

 7 

 5 

 9 

 17 



2 



3 



1 





153 201 



262 



762 



