36 BULLETIN 536, U. S. DEPARTMENT OF AGRICULTURE. 



The data indicate that the weight of the bean is not affected by infestation. 



In experimental work coffee cherries should be avoided, if possible, as a source of 

 fruit-fly larvae unless one is working close to coffee fields. While from 2 to 8 larvae 

 may mature in each fruit if the fruit remains attached to the tree, the fruit heats and 

 decays so rapidly after being picked and placed in containers that only a relatively 

 small number of adults can be reared. Only 427 adults were reared from 1,500 ripe 

 infested cherries placed over sand in lots of 25. If these cherries had been allowed to 

 remain on the tree they would have produced at least 6,000 adults. 



30. Quince (Cydonia vulgaris). 



The quince (Cydonia vulgaris) is not grown in Hawaii, but fruits obtained from the 

 mainland were readily infested. The quince is frequently infested in Australia, 

 South Africa, and Spain. 



31. Persimmon (Diospyros decandra). 



The brown persimmon (Diospyros decandra) is the only Diospyros grown in Hawaii. 

 Mr. G. P. Wilder has grown fruits a few of which have become infested on reaching 

 maturity. From one ripe fruit 57 adults were reared during December, 1911, by the 

 Hawaiian Board of Agriculture. The persimmon has been reported infested from 

 Algeria, South Africa, and Australia. 



32. Loquat (Eriobotrya japonica) . 



The loquat (Eriobotrya japonica) is badly infested in Hawaii, and appears to be a 

 favored host. Infested loquats often hang on the tree and shrivel up after the larvae 

 have become full grown and dropped to the ground. When punctured before the 

 fruits are ripe, the areas about the punctures remain green after the rest of the fruit 

 turns yellow, thus making these infestations very evident. As many as 11 punctures 

 have been counted in a single fruit. From lots of 200 and 150 fruits each, 1,261 and 

 990 adults, respectively, were reared. From one cluster of 17 fruits 458 adults, or an 

 average of about 27 flies per fruit, were reared. 



In Bermuda the loquats are badly infested and serve as a host by means of which 

 large numbers of flies pass the winter and spring months. 



33. Brazilian Plum or Spanish Cherry (Eugenia brasiliensis). 



The Brazilian plum or Spanish cherry (Eugenia brasiliensis) is easily and badly 

 infested . It is doubtful if a single fruit comes to maturity in Honolulu without becom- 

 ing at least partially infested. The larvae develop well in this fruit and often as 

 many as 20 adults may be reared from a single fruit slightly over one-half inch 

 in diameter. 



34. Rose Apple (Eugenia jambos) . 



The rose apple (Eugenia jambos) (PI. IV, fig. 2, and PI. VIII, fig. 1) is a preferred 

 host and is everywhere generally and badly infested about Honolulu. From 36 fruits 

 gathered during July, 1913, in Manoa Valley there emerged a total of 1,688 adults, 

 or an average of about 47 per fruit. Each fruit yielded adults, 10 fruits yielding 53, 

 6, 91, 36, 44, 58, 1, 18, 56, and 92, respectively. A total of 1,395 adults, or an average 

 of 19.6, were reared from 75 fruits collected in Nuuanu Valley during March, 1914. 

 One fruit from Kalihi Valley in July, 1913, yielded 20 adults. 



35, 36.' Surinam Cherry (Eugenia michelii) and French Cherry (Eugenia unijlora). 



The Surinam cherry (Eugenia michelii) and the French cherry (Eugenia unijlora), 

 known in Spanish countries by the general term "pitangas, " are fruits very generally 

 infested, and although they never yield many adult flies in proportion to their size, 

 very few fruits escape attack. In Bermuda the former was found to be one of the 

 principal hosts of C. capitata. From 437 supposedly badly infested fruits gathered 



