PARASITISM OF MEDITI_:EKANEAN FEUIT FLY IN HAWAII 6 



Table 1. — Records of infestation of host fruits by larvae of the Mediterranean fruit 

 fly in Hawaii during the years 1922, 1923, and 1924 



Host fruit 



Number of fruits 

 collected 



1922 1923 1924 



Number of larvae 

 emerging 



1922 1923 1924 



Average 



number of 



larvae per 



fruit 



1922 1923 1924 



Average 

 number 

 of larvae 

 per fruit, 

 1916-1924, 

 inclusive 



27, 772 

 3, 198 



13, 318 

 2,036 

 6,453 



1,628 

 321 



Indian almond (Terminalia catappa).. 



Mango (Mangifera indica) 



Coffee (Coffea arabica) 



Strawberry guava (Psidium cattleia- 



nuin) 



Black myrobalan (Terminalia chebula) 



French cherry (Eugenia uniflora) 



Satin leaf (Chrysophyllum olivae- 



forme) 



Rose apple (Eugenia jambos) 



West Indian medlar (Mimusops elengi) 



Cararabola (Averrhoa carambola) 



Yellow oleander (Thevetia neriifolia).. 



Loquat (Eriobotrya japonica) j 



Chinese orange (Citrus sp.) 42, 195 



Guava (Psidium guajava) \ 4, 706 



Orange (Citrus aurantium) | 1,728 



Tangerine (Citrus nobilis) ! 494 



Lime (Citrus medica limetta) j 354 



Noronhia emarginata j 1 



Ochrosia elliptica ' 167 



Kamani (Calophyllnm inophyllum) 

 Peach (Amygdalus persica) 



17, 505 20, 408 



2, 3131 3, 189 



21, 515 20, 647 



195, 512 

 18, 362 



3,813 

 '5," 510 



2,494 

 12," 



1,265 

 170 



White sapote (Casimiroa edulis) 



Star-apple (Chrysophyllum cainito)... 

 W^aiawi (Psidium guajava pyriferum). 



Terminalia spp 



Grapefruit (Citrus decumanaj 



Fig (Ficus carica) 



124 



107 1,897 

 161 



1351 183 

 5, 150 422 



3i,"73i 26, 750 

 3,494; 1,002 



21, 795 

 6,598 

 6,056 



5,870 

 3,949 



100, 225 

 21, 923 

 6,302 



3, 



" 16,' 897 



1,121 



1,554 



244 



4,548' 26 



57i..: 



119,816 66 

 3,762 25, 

 4, 270 3 

 2. 108j 1; 



1,582'. 

 



1611 

 18 



315 



22, 369 



20 

 814 



58."8i2 



5,502 



1,208 



817 



75 



1.6 

 3.2 

 .9 



3.6 

 12.3 



7.7 



10.3 



.1 



1.11 

 1.5' 

 .0 



11.8^ 



2. 2| 

 5. 5i 

 1.9 

 .61 

 .2 



2.5 





 1 



193 



21 



453 



1.3 

 23.4 



.0 

 .0, 



6.9: 



.3' 



5.11 



1.5 

 6.0 

 1.2 



3.3 



4.0 

 2.4 



2.4 

 8.2 

 3.0 

 1.5 

 .6 

 1.5 

 3 7 

 3.5 

 18.4 

 5.9 



6.9 

 .3 

 5.1 



Table 2. — Average number of larvae of the Mediterranean fruit fly per fruit examined 

 in Hawaii for each year of the period 1916 to 1924, inclusive, and for the period 

 as a whole 









Average number of larvae per fruit in 



- 





Host fruit 



1916 



1917 



1918 



1919 



1920 



1921 



1922 



1923 



1924 



Over 

 9-year 

 period ' 



Indian almond 



Mango 



9.5 

 1.7 



.5 

 L6 

 7.0 



.8 

 2.0 

 5.5 

 5.3 



8.0 

 8.1 

 .8 

 2.0 

 5.9 

 1.0 

 3.4 

 8.8 

 1.8 

 4.7 

 L6 

 5.7 

 2.6 

 L8 

 4.5 



9.9 

 24.4 

 .6 

 L3 

 4.8 

 LO 

 3.2 

 6.6 

 2.5 



8.4 

 3.7 



.4 

 L2 

 4.7 



.9 

 5.0 



5.5 

 3.5 

 .6 

 L2 

 6.9 

 •1.4 

 4.7 



n.5 



.4 



10.5 

 3.9 

 .4 

 3.4 

 7.0 

 1.9 



8.0 

 LO 



'T5' 

 2.6 

 6.7 

 2.2 

 3.1 



"i.'s" 

 1.5 



7.0 



5.7 



"i.'e" 

 3.2 

 .9 

 3.6 



12.3 



7.7 



10.3 



.1 



1.2 



4.9 

 6.9 

 .3 

 L2 



7.9 

 5 9 



Coffee --- - . . -. ... 



.4 



Strawberry guava 



1. 5 



Black mvrobalan 



6 





.9 



L3 



L2 





3. 3 



Rose apple 



3.2 

 2.3 



11.8 



9 9 



West Indian medlar 



3 7 



Sapodilla . . . ._. 



7.0 





L3 

 3.6 



.9 

 6.0 

 1.8 

 L8 

 8.5 



.1 

 1.7 

 3.4 

 2.5 

 9.8 

 3^ 



.2 

 L9 



"2.I' 

 7.2 

 6.0 

 .9 

 L2 

 .1 



"s.'e" 

 .3 



2.8 

 11.4 

 2.5 

 4.3 

 1.1 

 1.5 

 .0 



.1 

 5.1 



.1 



1.9 



. 6 



Yellow oleander 



4 



Loquat . - . .. 



2.4 





3.1 

 6.8 



2.1 

 7.2 

 3.5 

 .7 

 .3 



2.2 



5.5 

 L9 

 .6 

 .2 



2.4 



Guava 



8 2 



Orange 



3 











1. 5 



Lime .. . _.. 











. 6 



Noronhia emarginata 



1.7 

 3.1 

 3.3 

 20.5 



"23."5" 

 2.4 

 15.2 

 7.6 



LI 





1 6 



Ochrosia elliptica 







3 7 



Kamani _ .. 



2.4 



22.4 



6.0 

 13.6 



4.9 

 15.6 



L3 

 23.4 





3.5 



Peach . . __ . 







18.4 



White sapote 





2.5 



5 9 



Star-apple 















.0 

 .0 



6.9 

 .3 



5.1 







Waiawi 











.6 









5 



















6. 9 



Grapefruit _ 



















3 



Fig 



















5. 1 





.8 











1 



. 8 













: 1 







Weighted averages. 



