MEDITERRANEAN FRUIT FLY IN HAWAII. 57 



Table XIV. — Duration of the larva stage of the Mediterranean fruit fly in Honolulu. 





Num- 













Temperature 





ber of 













of develop- 





speci- 



Larva 



Molted into 



Molted into 



Larva 



Length 



mental stage. 



Host fruit. 



mens 

 under 



hatched. 



second stage. 



third stage. 



pupated. 



of larva 

 stage. 















observa- 

 tion. 













Range. 



Mean. 

















°F. 



°F. 



Papaya.... 



3 



Dec. 19, 9 to 

 10 a. m. 



Dec. 21, 10 

 a. m. to 2 



Dec. 23, 4 

 p. m. 



Dec. 28, 12 m. 



9 



61-78 



69.6 



Do....... 



1 



do 



do 



Dec. 23, 10 

 a. m. to 2 

 p. m. 



Dec. 28, 4 

 a. m. 



9 



61-78 



69.6 



Do 



2 



do 



do 



Dec. 23, 4 to 

 10 p. m. 



do 



9 



61-78 



69.6 



Do 



1 



do 



do 



Dec. 23, 10 

 a. m. to 2 

 p. m. 



Dec. 28, 12 m. 



9 



61-78 



69.6 



Do 



1 



do 



do 



Dec. 23, 4 to 

 10 p.m. 



Dec. 28, 10 

 a. m. 



9 



61-78 



69.6 



Do 



1 



do 



do 



Dec. 23, 2.45 

 p. m. 



Dec. 28, 11 

 a. m. 



9 



61-78 



69.6 



Do 



1 



do 



do 



Dec. 23, 4 to 



do 



9 



61-78 



69.6 



Do 



1 



do 



do 



10 p. m. 



Dec. 28, 12 m. 



9 



61-78 



69.6 



Do 



1 



do 



do.., 



do 



Dec. 29, 4 



10 



61-78 



69.6 



Do.. 



1 



do 



Dec. 21, 2 to 

 4 p. m. 



Dec. 23-24, 10 

 p. m. to 6 

 a. m. 



Dec. 29, 3 

 p. m. 



10 



61-78 



69.6 



Do 



1 



do 



Dec. 21, 4 to 

 9 p. m. 



do 



Dec. 29, 12 m. 



10 



61-78 



69.6 



Do 



1 



do 



Dec. 21, 10 

 a. m. to 2 



do 



Jan. 2, 1p.m. 



14 



61-79 



70 



Do 



2 



June 12, a. m. 



June 14, a. m. 



June 16, a. m. 



June 18, a. m. 



5.1 



71-83 



77.6 



Do 



3 



June 12, p. m. 



do 



do 



do 



5.5 



71-83 



77.6 



Do 



1 



June 19, a. m. 



June 20-21, 4 

 p. m. to 8 

 a. m. 



June 21-22, 4 

 p. m. to 8 

 a. m. 



July 1, a. m.. 



12 



72-83 



77 



Do 



1 



do 



do 



do 



July 3, a. m.. 



14 



72-83 



77.1 



Do 



1 



do 



June 20, 1 to 

 4 p. m. 



do 



June 25, p.m. 



6 



72-83 



76.4 



Do 



17 



do 



June 20-26, 4 

 p. m. to 8 

 a. m. 



do 



do 



6 



72-83 



76.4 



Do 



2 



do 



do 



do 



June 26, a. m. 



7 



72-83 



76.6 



Green peach 



2 



June 22 







July 2 



10 



72-83 



77.2 



Do. ..... 



7 

 6 



do 







July 3 



July 6 



11 

 9.5 



72-83 

 72-83 



77.2 



Ripe hard 



June 26 







77.4 



peach. 



















Ripe soft 

 peach. 



4 



do 







July 2 



6 



72-83 



77.8 



















3 



18 



do 







July 3 



Apr. 10 



7 

 10 



72-83 

 61-77 



77.7 



Green peach 



Mar. 31 







69.6 



Do. ..... 



12 



do 







Apr. 11 



11 



61-77 



69.8 



Do 



1 



12 



do 







Apr. 15 



Mar. 27 



15 

 14 



61-82 

 57-80 



71.0 



Commercial 



Mar. 13 







70.2 



lemon. 











Do 



14 



do 







Mar. 29 



16 



57-80 



70.3 



Do 



3 



do 







Apr. 1 



19 



57-80 



70.5 



Do 



1 



do 







Apr. 4 



22 



57-80 



70.4 



Do 



1 

 1 



do 







Apr. 8 



Jan. 13, 1915.. 



26 

 19 



57-80 

 67-81 



70.4 



Apple 



Dec. 25, 1914.. 

 do..' 







71.6 



1 



1 







Jan. 19, 1915.. 

 Jan. 30, 1915. 



25 



35 



67-81 

 67-81 



71.1 



Do 



Dec. 26, 1914.. 







70 













The data recorded in Table XV only indicate the possibilities in 

 lengthening larval life. Except at temperatures from 58° to 62° F. ; 

 none of the larvae would have been able to mature had they been 

 kept at the temperatures recorded. The data merely bring out the 

 fact that upon the examination of the host fruits after so many days 

 the larvae recorded were found alive. A very large percentage of the 

 larvae within the same fruits were dead, but this mortality, due to 

 exposure to cold for prolonged periods, is discussed elsewhere. 



