12 



BULLETIN 536, U. S. DEPARTMENT OF AGRICULTURE. 



Tablk IV. — Number and species of host trees of the Mediterranean fruit fly growing in 

 that portion of Honolulu covered by Table III. 



Apricot 



Avocado 



Breadfruit 



Carambala 



Chinese in kberry. 



Chinese orange 



Coffee 



Coffee, Liberian . . . 



Cotton 



Custard apple 



Damson plum 



1 



653 



58 



48 



6 



148 



298 



8 



11 



1 



4 



Fig 



Guava, common . . 

 Guava, strawberry 



Java plum 



Kamani, ball 



Kamani , winged . . 



Kumquat 



Lemon 



Lichee 



Lime 



Loquat 



201 

 94 

 73 

 80 



4 

 13 



4 

 22 

 40 

 10 

 33 



Mandarin 28 



Mango 1,154 



Mangostecn 7 



Mountain apple ... 41 



Mock oran ge 33 



Orauge, sweet . . . . 372 



Papaya (1S7 



Peach 09 



Pear, Bartlett 2 



Pomegranate 128 



Pomelo 15 



Rose apple 



Sapodilla 



Sapota 



Soursop 



Spanish cherry . . . 



Star apple 



Surinam cherrv. . . 



Wi "... 



Waiawai 



Total 4,610 



In Hilo, island of Hawaii, host conditions are quite as favorable for 

 fruit-fly development as in Honolulu. Thus the following numbers of 

 host trees and shrubs were found in certain yards of Hilo during 

 March, 1914: 



Yard 2. 

 2 Surinam cherry. 

 2 Papaya. 



1 Thevetia. 



2 Orange. 



2 Strawberry guava. 

 14 Coffee. 

 Bananas. 



2 Avocado. 



1 Peach. 



3 Fig. 



2 Mountain apple. 



2 Lichee nut. 



3 Common guava. 



Yard 4. 

 4 Peach. 

 6 Mango. 



1 Loquat. 



3 Winged kamani. 



2 Surinam cherry. 

 1 Strawberry guava. 



Yard 1. Yard 2. Yard 3. 



1 Rose apple. 1 2 Surinam cherry. 11 Rose apple. 

 4 Surinam cherry. 2 Papaya. 2 Mango. 



2 Japanese plum 1 Thevetia. 3 Thevetia. 

 6 Mountain apple. 2 Orange. 1 Avocado. 



1 Star apple. 

 34 Coffee trees. 

 20 Common guava. 

 15 Brazilian banana. 



4 Avocado. 



3 Mango 



2 Papaya. 



5 Orange 



1 Peach. 



1 Grape. 



1 Winged kamani. 

 1 Mangosteen. 

 1 Fig. 

 1 Mimusops. 



There is no time in Hawaii when fruits are entirely out of season. 

 The fact that several hosts, such as the Chinese orange {Citrus 

 japonica), Surinam cherry (Eugenia michelii), and mock orange 

 (Murray a exotica), bear several crops a year, while others, such as 

 certain specimens of ball kamani (Calophyllum. inopTiyllum) (PI. VI) 

 and winged kamani (Terminalia catappa) (PI. XIX), appear to be sel- 

 dom entirely free from ripening fruits, assures food for the fruit fly the 

 year round. 



The succession of fruits is also increased by the individuality of 

 trees of the same species, or even of certain branches of a single tree, 

 which results in a very uneven ripening of the fruit. While the data 

 in Table V do not indicate the seasonal abundance of host fruits, 

 they have been summarized from the collections of clean-culture 

 inspectors made during 1913 to show the remarkable succession of 

 host fruits found ripening in greater or less quantities throughout 



1 For scientific names of fruits see section on host fruits, p. 24. 



