THE CODLING MOTH IN MICHIGAN. 



G5 



Table LXVII. — Band records of 1911, at Pentwater, Mich.; larvae collected by S . J. 



Taylor. 



No. of 

 record. 



Date of 

 collect- 

 ing. 



Num- 

 ber of 

 larvae. 



Emer- 

 gence of 



moths, 

 1911. 



Emer- 

 gence of 

 para- 

 sites, 

 1911. 



Num- 

 ber of 

 win- 

 tering 



larvae. 



No. of 

 record. 



Date of 

 collect- 

 ing. 



Num- 

 ber of 

 larvae. 



Emer- 

 gence of 

 moths, 

 1911. 



Emer- 

 gence of 

 para- 

 sites, 

 1911. 



Num- 

 ber of 

 win- 

 tering 

 larva?. 





6 



10 

 56 

 24 

 18 

 17 

 37 



1 

 5 

 44 

 9 



2 



5 

 5 



10 

 15 



13 

 fi 



27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 



Sept. 11 

 Sept. 14 

 Sept. 17 

 Sept. 20 

 Sept, 23 

 Sept. 26 

 Sept. 29 

 Oct. 2 

 Oct. 5 

 Oct. 8 

 Oct. 11 

 Oct. 14 



18 







IS 



12 



14 



16 ; 



17 



22 



23 



13 



10 



5 

 13 

 11 

 22 

 15 



2 



3 



2 











1 















1 



2 

 3 



4 

 5 

 



J 



9 



June 28 

 July 1 

 July 4 

 July 7 

 July 10 

 July 13 

 July 16 

 .Tnlv 19 



12 







14 

 16 



17 











■i:: 



31 







22 

 23 











46 34 ! 



13 

 10 

 5 

 13 



11 







57 

 73 

 38 



38 







10 Julv 22 



11 i Julv 25 



1 7 

 29 

 31 



! 6 



9 



8 











12 Julv 2S 1 39 



13 .Tnlv 31 52 







25 



39 j Oct. 17 \ 22 



40 Oct. 20 1 15 



41 Oct. 23 I 2 



42 Oct. 26 i 3 



43 Oct. 29 1 2 





14 

 15 

 16 



17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 



Aug. 3 45 

 Aug. 6 38 

 Aug. 9 32 

 Aug. 12 lfi 



21 



24 



27 

 14 



38 

 28 

 26 

 17 

 25 

 26 





11 

 5 

 2 

 4 















Aug. 15 

 Aug. 18 

 Aug. 21 

 Aug. 24 

 Aug. 27 

 Aug. 30 

 S^pt. 2 

 Sept. 5 

 Sept. 8 



42 

 28 

 26 



£ 



26 

 25 

 15 

 16 



44 

 45 

 46 

 47 

 48 

 49 

 50 



Nov. 1 







Nov. 4 

 Nov. 7 

 Nov 10 

 Nov. 13 

 Nov. 16 

 Nov. 19 





 1 

 

 

 



1 

































25 

 15 

 16 



















T 



otal 



1.044 



372 



2 1 670 



Table LXVIII. — Band records of 1911; summaries of Tables LXIII-LXVII. 



Douglas. I Lake shore. X ^ 2 ch " 



Benton 

 Harbor. 



Observations. 



Total 

 num- 

 ber. 



Larvae collected from 



the bands 517 



Moths emerging. 1911.. 91 

 Parasites emerging. 1911 19 

 Larvae of the first 



brood I 261 



Transforming larvae of 



first brood j 91 



Wintering larvae of j 



first brood 170 



Larva? of the second 



brood 256 



Wintering larvae of 



first and second I 



broods ! 407 



Per 



100.0 

 17.6 

 3.7 



50.5 



34.9 

 65.1 

 49.5 



Total 

 num- 

 ber. 



Per 



cent. 



Total 

 num- 

 ber. 



Per Total Per 

 clnl lucent. 



Pent-water. 



Total 

 num- 

 ber. 



78.7 



1.125 



287 



9 



1C0.0 



25.5 



.8 



434 

 90 

 9 



100.0 

 20.7 

 2.1 



775 



68.9 



268 



61.7 



287 



37.0 



90 



33.6 



488 



63.0 



178 



66.4 



350 



31.1 



166 



38.3 



829 



73.7 



335 



77.2 



1.567 

 441 

 35 



1.008 



441 



567 



559 



1,091 



100.0 



28.1 



2.3 



64.3 



43.7 



56.3 



35.7 



1.044 



372 



2 



717 



372 



345 



327 



670 



Aver- 

 age per 



Per 

 cent. 



100.0 



35.6 



.2 



68.7 



51.9 



48. 1 



31.3 



64.2 



100.0 



25.5 



1.8 



62.8 



40.0 



60.0 



37.2 



The averages for the different observations show that from the 

 total number of larva 3 only 25.5 per cent transformed and issued as 

 moths in 1911; adult parasites issued in 1911 from 1.8 per cent of 

 the codling-moth larvae: 62. S per cent of the larvae were of the first 

 brood and 37.2 per cent of the second brood: of the first-brood larva? 

 40 per cent transformed and 60 per cent wintered: of both the first 

 and second broods 72.7 per cent of the larvae wintered. 



SUMMARY OF SEASONAL-HISTORY STUDIES OF 1911. 



The prevailing high temperature of the season produced a marked 

 shortening in the time of development of the codling moth. The 

 deviation from the average conditions is only slightly noticeable 

 within the separate stages, but becomes strikingly marked for the 



