82 



DECIDUOUS FRUIT INSECTS AXD INSECTICIDES. 



Table VII. — Mating and oviposition of the California peach borer 



Indi- 

 vid- 

 ual 

 No. 



Moths intro- 

 duced into 

 cages. 



Mating. 



Oviposi- 

 tion 

 begins. 



Oviposi- 

 tion 

 com- 

 pleted. 



Period of 

 oviposition. 



Moth 

 dies. 



Life 

 of 



moth. 



Num- 

 ber 

 of 

 eggs 

 de- 

 posit- 

 ed. 



Un- 



hatch- 

 ed 

 eggs 

 dis- 

 sected 

 from 

 body. 



Total 

 num- 

 ber 

 of 

 eggs. 



1 

 2 



1908. 

 July 17 



do 



1908. 

 July 17, 9 a. 

 m. 



July 18.. 



(?) 



About 3 

 days. 



July 22.. 



July 20 



(male). 



July 22 



(female). 



Bays. 

 5 



3 



5 



136 

 66 



144 

 482 



2S0 

 548- 





do 



July IS 



July 20 (9 

 male, 9 fe- 

 male). 



July 22 



July22,noon. 



July 23 



July 17.i 

 10.50 a. m. 

 to 12.10 p. 

 m. 



Not observed 



July 18.. 









3 





( 2 ) 

 319 





4 



July 20.. 











305 



624 



5 



July 21.. 







July 22 

 (6male, 



5 fe- 

 male). 



July 23 

 (linale, 

 3 fe- 

 male). 



July 24 

 (2 male, 

 1 fe- 

 male). 



Julv25.. 

 ....do.... 



do.... 

 July 29.. 

 July 28, 

 noon. 

 July 29, 



6 p.m. 

 Aug 6... 



Aug. 5 . . 



Aug. 8 . . 



Aug. 10 . 



Aug. 12 . 



Aug. 15. 



1 











3 

 3 



2 

 2 

 1 



2 

 3 

 2 

 3 

 3 

 o 



5 







Not observed 

 do 



do 



July 23.. 

 July 23. 



9 a. m. 

 July 24.. 

 July 29.. 

 July 28, 



9 a.m. 

 ....do.... 



Aug. 3, 

 3 p.m. 

 ....do.... 



July 24. . 

 ....do.... 



July 25.. 

 July 29.. 

 July 28, 



noon. 

 July 29, 



6 p.m. 

 Aug. 5, 



p. m. 

 Aug. 4, 



p. m. 

 Aug. 7, 



p. m. 



2 days...... 



...do 



...do 



ldav 



4 hours 



2 davs 



3 davs 



2 davs 



...do 

















6 



7 



8 



204 

 268 



168 



6 



92 



639 



210 



163 



65 

 123 



126 

 193 

 166 



98 



269 

 391 



■?94 



9 

 10 



11 



12 



July 9 7, noon 

 do 



July 27, 2 p. 



m. 

 Aug. 3, 11.30 



a. m. 

 do 



dos 



July 27, 9.30 



to 11 a. m. 



Not observed 



do 



do 



199 

 258- 



737 



13 







14 



Aug.5, 10.30 



a. m. 

 Aug. 7, 3 p. 



m. 

 Aug. 10 



do 



do 



do 



Aug. 10, 

 10.30 a.m. 

 to 12 noon. 



Aug. 10, 10 



Aug. 6.. 

 Aug. 8 . 



59 

 298 



202 







15 







16 













17 



Aug. 10.. 



Aug. 14.. 







5 davs 



118 





- 





a. m. to 12 

 noon. 







1 Male had mated previously xrith another female for 1 hour and 17 minutes. 



2 Many eggs laid, but none hatched. 

 s Male had mated previously. 



Table VII indicates that moths began oviposition a few hours after 

 issuance, or at the latest on the following day. The period of ovipo- 

 sition of a single moth is seldom longer than two or three days, and 

 the moths die immediatelv thereafter. 



LEXGTH OF LIFE OF THE MOTHS. 



Moths which were kept from mating were found to die without hav- 

 ing placed any or at least only a few eggs. Female moths die imme- 

 diately after oviposition is completed. Males die soon after mating. 

 Oviposition within the rearing cages would begin within a few hours (8 

 to 10) after mating, and always within 24 hours ; it would be completed 

 within 3 or 4 days and none was observed to live longer than 5 days. 



