34 



BULLETIN 189, U. S. DEPARTMENT OF AGRICULTURE. 



appeared 3 days after the blossoms were off 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 



-fc SO 



SPRING BROOD 



Illl till Illl fill Illl 



f/RST 3 ROOD 



iiiN/n 



SLW TSJ 



O 10 O U) C> 



x ** <\i CM PJ 



UUNE 



QW)OU) *"* I/) O U) 

 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 numbers decreased 

 until September 11, when the last one issued. 



TABLE XXVI. Emergence of first-brood moths of the codling 

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



moth at 



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 larvas 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. 



