CODLING MOTH IN SANTA CLAKA VALLEY. 



125 



Table XI. — Adult emergence of the first and spring broods from band material collected 



in 1909. 







Number col- 









Emergence. 







Jar No. 



Date of 

 collection. 







Total. 



































Larvae. 



Pupae. 





1909. 



1910. 



1909-10. 













Num- 



Per 



Num- 



Per 



Num- 



Per 





1909. 









ber. 



cent. 



ber. 



cent. 



ber. 



cent. 



C-3 

 C-4-5 



June 21 — 

 June 28.... 



1,602 

 2,276 



215 

 79 



1,817 

 2, 355 



403 

 678 



23.8 



28.8 







403 



678 



23.8 

 28.8 







C-7 



Julv 6 



946 



159 



1,105 



722 



65.3 







722 



65.3 



C-8 



Julv 9 



804 



93 



897 



427 



47.6 



122 



13.6 



549 



61.2 



C-9 



July 12.... 



761 



59 



820 



295 



35.9 



121 



14.7 



416 



50.6 



C-10 



July 15. . . . 



885 



68 



953 



496 



52.0 







496 



52.0 



C-ll 



July 19.... 



919 



48 



967 



433 



44.7 



141 



14.6 



574 



59.3 



C-12 



July 22. . . . 



536 



37 



573 



260 



45.3 



74 



11.1 



334 



56.4 



C-13 



July 26. . . . 



505 



30 



535 



148 



26.5 



143 



26.5 



291 



53.0 



C-14 



July 29.... 



350 



22 



372 



79 



21.2 



133 



35.7 



212 



56.9 



C-15 



Aug. 2.... 



297 



22 



319 



48 



15.0 



115 



36.0 



163 



51.0 



C-16 



Aug. 5 



180 



16 



196 



4 



2.0 



42 



21.4 



46 



23.4 



C-18 



Aug. 9 



185 



7 



192 



26 



13.5 



47 



24.4 



73 



37.9 



C-19 



Aug. 12... 



115 



10 



125 



9 



7.2 



82 



65.6 



91 



72.8 



C-21 



Aug. 16... 



112 



4 



116 



18 



15.5 



GO 



48.2 



73 



63.7 



C-22 



Aug. 19... 



262 



2 



264 



105 



39.6 



129 



48.8 



234 



88.4 



C-23 



Aug. 23... 



383 







383 



18 



4.6 



193 



50.4 



211 



55.0 



C-24 



Aug. 26... 



403 



3 



406 







1.2 



223 



54.9 



228 



56.1 



C-25 



Aug. 31... 



477 



4 



481 



3 



.6 



267 



55.5 



270 



56.1 



C-26 



Sept. 2.... 

 Sept. 6.... 



371 



4 



375 







210 



56.0 



210 



56 



C-27 



580 







580 







257 



44.3 



257 



44.3 



C-28 



Sept. 9.... 



381 







381 







258 



66.9 



258 



66.9 



C-29 



Sept. 13... 

 Sept. 16... 



253 



o 



253 







328 



72.4 



328 



72 4 



C-30 



359 



1 



360 







157 



43.6 



157 



43.6 



C-31 



Sept. 20... 

 Total . . 



290 







290 







116 



40.0 



116 



40.0 







14, 232 



883 



15, 115 



4, 177 



27.63 



3,213 



21.25 



7,390 



48. 88 ; 



Time during the day when moths emerged. — No tabulated record was 

 kept to show the time during the day when most of the moths 

 emerged, but observations showed that they issued in numbers 

 after 4 p. m. and supposedly during the night. Few emerged during 

 the period from morning after 9 o'clock until in the evening. The 

 emergence record was therefore usually taken each morning before 

 9 a. m. and included moths of the evening and night before. This 

 seems at variance with the records obtained in 1911. 



Period of oviposition. — The first moths that appeared the latter 

 part of March failed to oviposit since only a few individuals had 

 appeared until April 18. No difficulty was experienced in obtaining 

 eggs in confinement when a number of moths were placed in a cage at a 

 time. No eggs could be obtained from single pairs of spring-brood 

 moths as was possible later with those of the first brood and hence 

 no data was obtained as to the number of eggs a single female can 

 deposit. 



The first eggs were obtained April 26 or about from 3 to 4 days 

 after moths began to emerge in numbers. The period of low mean 

 temperature from April 26 to May 5 (see fig. 28) caused very few eggs 

 to be deposited, but by May 7 and from then on until the end of the 

 month large numbers were obtained. Oviposition in the field prob- 

 ably extended from April 10 to June 20 (about 10 days after the last 

 moth appeared), or a period of about 80 days, this giving a wide 



