MEDITERRANEAN FRUIT FLY IN HAWAII. 



65 



rate of mortality for the 40 is as follows: On August 14, 28; Septem- 

 ber 4, 9, 12, 15, 17, 19, 21, 23, 24, and October 2 and 3, there were 

 alive 40, 30, 17, 12, 11, 10, 10, 7, 5, 4, 2, 2, adults. Two hundred 

 and twenty-five adults which emerged on December 31, 1913, were 

 placed in a large glass jar and fed daily. The last fly which died lived 

 to be 131 days old. A general idea of the mortality of these flies may 

 be had from the fact that when examinations were made on March 9, 

 13, 18, 22, 26, 31, April 1, 6, 13, 15, 17, 18, 19, 26, 27, 28, 30, May 1, 

 3, 5, 7, 9, 10, and 11, there were living 225, 214, 202, 171, 139, 94, 59, 

 47, 36, 32, 28, 25, 18, 16, 13, 12, 11, 9, 7, 5, 4, 3, 2, and 1, 

 respectively. 



One female emerging on February 28, 1914, died on August 3; two 

 males emerging on the same date died on October 5 (7 months, 5 days), 

 and on October 15 (7 months, 15 days), respectively. One female 

 emerging on March 3, 1914, died on September 8 (6 months, 3 days). 

 The death rate among 95 males and 58 females, the only survivors on 

 July 3 of a lot of 800 adults emerging on February 28, 1914, is given 

 in Table XVII. The oldest fly lived 230 days, or 7 months and 10 

 days. 



Table XVII. — Data on longevity of adults of the Mediterranean fruit fly emerging on 

 Feb. 28, 1914, which had survived until July 3. 



Date. 



Adults still alive. 



Date. 



Adults still alive. 



Date. 



Adults still alive. 



Male. 



Female. 



Male. 



Female. 



Male. 



Female. 



July .3 

 July 9 

 July 13 

 July 18 

 July 25 

 Aug. 1 

 Aug. 8 



95 

 80 

 58 

 48 

 41 

 35 

 26 



58 

 38 

 25 

 20 

 12 

 6 

 3 



Aug. 15 

 Aug. 18 

 Aug. 22 

 Aug. 25 

 Aug. 29 

 Sept. 1 

 Sept. 8 



19 

 14 

 11 



10 

 9 

 8 

 6 



2 

 2 

 2 

 2 

 2 

 2 

 



Sept. 11 

 Sept. 12 

 Sept. 18 

 Oct. 5 

 Oct. 16 

 Oct. 17 



5 

 3 

 2 

 1 

 1 

 





 

 

 

 

 



One female, emerging May 22, 1914, and kept continuously in a 

 well-lighted glass refrigerator at 58°-62° F., lived until April 1, 1915, 

 315 days, or 10 months and 10 days. The rate of mortality of the 

 flies still living of this lot on December 4 is recorded in Table XVIII. 



Table XVIII. — Data on longevity of adults of the Mediterranean fruit fly emerging on 

 May 22, 1914, and kept in a glass refrigerator at 58°-62° F. 





Adults still alive. 





Adults still alive. 





Adults still alive. 



Date. 





Date. 





Date. 





Male. 



Female. 



Male. 



Female. 



Male. 



Female. 



Dec. 4 



43 



62 



Jan. 5 



17 



32 



Feb. 4 



4 



10 



Dec. 15 



31 



55 



Jan. 8 



16 



30 



Feb. 10 



1 



6 



Dec. 19 



26 



51 



Jan. 13 



14 



28 



Feb. 13 



1 



4 



Dec. 23 



24 



48 



Jan. 18 



14 



24 



Feb. 17 



1 



3 



Dec. 26 



24 



43 



Jan. 26 



9 



20 



Mar. 6 







2 



Dec. 29 



24 



37 



Jan. 29 



7 



16 



Apr. 1 







1 



Jan. 2 



21 



36 



Feb. 1 



4 



12 



Apr. 2 











81340°— 18— Bull. 536- 



