106 



BULLETIN 932, U. S. DEPARTMENT OF AGRICULTURE. 



A comparison of Tables XLII and LXXVI will show that the 

 average number of eggs per female was greater in 1916, but that, as in 

 1915, the period of oviposition was shortened somewhat and that it 

 was also delayed where the pairs were confined alone in individual 

 cages. However, in 1916, the female lived for an average of 12.20 

 days when confined with other moths in a large battery- jar cage, as 

 shown in Table XLIII, compared with 16.42 days when caged in- 

 dividually. Other important phases of the individual oviposition 

 studies of 1916 are given in detail in Table LXXVI. 



An abbreviated table giving the data for all of the moths that 

 deposited 100 or more eggs is given herewith. (See Table LXXVII.) 

 Referring to this table, it will be noted that 3 moths deposited over 

 300 eggs each, 1 moth deposited between 275 and 300 eggs, 6 moths 

 between 250 and 275 eggs, 8 moths between 225 and 250 eggs, 10 

 moths between 200 and 225 eggs, 13 moths between 175 and 200 eggs, 

 9 moths between 150 and 175 eggs, 14 moths between 125 and 150 

 eggs, and 14 moths between 100 and 125 eggs. 



Table LXXVII. — Oviposition by individual codling moths of the first brood, 

 Grand Junction, Colo., 1916. Data taken from Table LXXVI. 



Number of eggs deposited. 



100 to 125 



125 to 150 



150 to 175 



175 to 200 



200 to 225 



225 to 250 



250 to 275 



275 to 300 



300 to 325 



101 



126 



151 



175 



200 



227 



251 



277 



308 



102 



126 



157 



175 



203 



227 



252 





309 



103 



127 



158 



181 



207 



229 



252 





316 



107 



128 



159 



182 



210 



236 



258 







109 



133 



163 



183 



213 



240 



266 







112 



133 



165 



185 



213 



245 



271 







113 



134 



165 



185 



215 



247 









116 



135 



168 



186 



221 



249 









116 



136 



168 



186 



223 











118 



139 





188 



223 











119 



139 





192 













120 



142 





195 













120 



144 





199 













121 



146 

















DEPOSITION OF INFERTILE EGGS. 



On July 15, 1915, 30 female moths of the first brood which emerged 

 on this day were confined alone in a cage to find the number of eggs 

 deposited when male moths were not present. The results are given 

 in Table LXXVIII, in which it will be seen that a total of 232 eggs 

 were deposited, or an average of 7.40 eggs per moth. 



