34 



BULLETIN" 189; U. S. DEPAETMENT OF AGEICULTUEE. 



appeared 3 days after the blossoms were ojff and the maximum moth 

 emergence occurred from 10 to 12 days later. 



FIRST-BROOD MOTHS. 



As indicated in Table XXVI; first-brood moths made their appear- 

 ance in the jars on July 20, when seven were found. The number 

 increased up to July 28, and from that date until August 17 maximum 



rCj SO 



I 



K 10 

 



03 

 5 







/ 

























— 



i 























/ 



i "^ 



PR 



IN 



G 



BA 



?o 



OL 













A 



r/RST BROOD 



\ /^ lAi 1 1 









j 



/ 























/ 



J 





\ 





V 



^ 











J 



/ 



nil 



nil 



mil 



iiK 



nil 



nil 



nil 



nil 



nil 



nil 



III! 



nil 



i 



II n 



mil 



111 



nil 



V 



nil 



niilViii 



iiiN 



/^ 



MVf 



TKI 



M^Y UUNE UULY AUGUST SEPT 



Fig. 19.— Diagram to illustrate emergence of spring-brood and first-brood moths of the codling moth 

 at French Creek, W. Va., in 1912. 



numbers appeared. After the latter date the numbei-s decreased 

 until September 11, when the last one issued. 



Table XXVI. — Emergence of first-brood moths of the codling moth at 

 French Creek, W. Va., in 1912. (See fig. 19.) 



Date of obser- 

 vation. 



Number 

 of moths 

 emerging. 



Date of obser- 

 vation. 



Number 

 of moths 

 emerging. 



July 20 



7 



7 



16 



11 



Aug. 24.. 



7 

 2 



24 



28 



28 



31 



Aug. 1 . . . . 



Sept. 4.. . 



2 



5 





9 



12 



4 

 13 



11 



1 



13 



17 



Total 



82 



21 







BAND COLLECTIONS. 



About the middle of June, 12 apple trees were banded in an old 

 orchard that had never been sprayed. The bands were examined 

 twice each week. This year the larvae were later by at least a week 

 in beginning to leave the fruit than in 1911. The extent and dates 

 of the collections are set forth in Table XXVII and figure 20. 



