114 BULLETIN 932, U. S. DEPAKTMENT OF AGRICULTURE. 



mum deposition on August 2, and the deposition period ended 

 August 31. 



Hatching of second-brood eggs. — Eggs of the second brood (1915) 

 commenced hatching July 19 and were hatching in maximum num- 

 bers August 21. The last eggs of this brood hatched September 24. 

 In the following year the first eggs hatched July 9, and the largest 

 number August 8. The hatching of this brood of eggs ceased 

 September 8. 



Second-brood larvm leaving the fruit. — The data for these curves 

 were taken from insectary-reared larvae, and as shown in the graph 

 the first larvae left the fruit in 1915 on August 5. The larvae left the 

 fruit in largest numbers September 1, while the last larva of this 

 brood completed its feeding period November 11. In 1916 the first 

 larva emerged from the fruit July 22, on August 9 they left the fruit 

 in maximum numbers, and the last larva of this brood made its exit 

 from the fruit on November 12. 



Pupation of second-brood larva. — Larvae of the second brood 

 (1915) began to pupate August 12. The last transformation took 

 place October 2. In the succeeding year the pupation was as fol- 

 lows : First July 27, maximum August 1, last August 23. 



Emergence of second-brood moths. — According to the insectary- 

 reared material of 1915, the moths of the second brood commenced 

 to issue August 23. The emergence ended October 14. During the 

 season of 1916 the emergence period extended from August 7 to 

 September 6, with the maximum of emergence occurring August 14. 



Deposition of third-brood eggs. — The eggs of the third brood de- 

 posited in 1915 failed to hatch. The first egg was laid September 

 16, the last September 23. In 1916, however, fertile eggs were de- 

 posited, the oviposition period extending from August 12 to Sep- 

 tember 21 with the maximum deposition August 27. 



Hatching of third-brood eggs. — None of the third-brood eggs from 

 insectary-reared material hatched in 1915. In the following year 

 the hatching period commenced August 20 and ended September 21. 

 On September 4 the third-brood eggs hatched in greatest numbers. 



Wintering larvm. — The last of the wintering larvae of the season 

 of 1914 pupated June 8, 1915. The first larva taken in the field dur- 

 ing the season of 1915 to pass the winter successfully and transform 

 the following year to the adult stage was collected July 11 in the 

 Edwards orchard. In 1916 the last wintering individual pupated 

 June 12. Since no observations of the time of emergence of moths 

 were taken in 1917, it is impossible to state just when the first win- 

 tering larvae appeared in 1916. The part of the graph referring to 

 the wintering larvae of 1915-16 should be considered as an approxi- 

 mate estimate only. 



