THE MELON FLY IN HAWAII. 59 



Hawaiian Islands into the United States. It is quite probable that this Insert could 

 be introduced into several of our Southern States or recently acquired Insular possessions, 

 and it is one of those species for which quarantine Inspectors should be on the lookout. 

 No class of vegetables, if we except cabbages and botanieully related plants, are so badly 

 infested with insects as are the cucurbits, and the Introduction of another new pest is 

 most undesirable. 



The insects were referred to Mr. Coquillett, of this office, who alter careful examina- 

 tion pronounced the species an undescribed Trypetid. He has accordingly given it tie- 

 name of Dacus cucurbitw, and has published a description of it in the Entomological 

 News for May, 1899, under the title " A New Trypetid from Hawaii." 



(4) Koebele, Albert. 



1900. Report of Prof. A. Koebele, entomologist. In Itpt. Comr. A.gr. and 



Forestry, Hawaii, p. 36-49. 

 Among injurious pests treated he calls attention to the fact that Dacus cucur- 

 bit® is the only species of fruit fly so far known in Hawaii, that it is almost im- 

 possible to raise cucurbitaceous fruits without proper protection to the plants, and 

 suggests cooperation in clean cultural methods as the only feasible manner of 

 combating the pest. 



(5) Howard, L. O. 



1901. Diptera collected in Hawaii by H. W. Henshaw. In Proc. Ent. Soc. 



Washington, v. 4, no. 4, p. 490. 

 Among the Diptera Dacus cucurbitw Coq. is listed with the statement : " Five 

 specimens. Described from Hawaii." 



(6) Grimshaw, P. H. 



1901. Fauna Hawaiiensis. (v. 3, pt. 1, 77 p., 3 pi. Cambridge.) 

 Reference consists merely of copy of (2) and statement of Howard (5). 



(7) Craw, Alexander. 



1902. Horticultural quarantine reports. In Bien. Rept. Bd. Hort. Cal., 



v. 8, 1901-2, p. 1S7-204. 



Reference consists of a paragraph of seven lines, giving the first official record 

 of the interception by quarantine officers of melon-fly infested material from Hono- 

 lulu at San Francisco. Reference as follows (p. 198) : 



We occasionally find a melon in the possession of passengers or crews from Hono- 

 lulu, which we destroy. No melons, cucumbers, or summer squashes have been 

 received as freight from Honolulu since we destroyed the shipment that, arrived 

 on February 28, 1899. on the S. S. Australia, infested with melon maggots (Dacus 

 cucurbitw). In Honolulu this pest destroys 75 per cent of their crop. It is not 

 found in North America. 



(8) Perkins, R. C. L. 



1902. Insects. In Rept. Governor of Territory of Hawaii for 1902. 

 Ann. Rpts. U. S. Dept. Int., pt. 2, p. 360. 



An 8-line reference, recounting difficulty of growing cucumbers, except under cover, 

 as a result of melon-fly attack. " Its true home is no doubt either Japan or China. 

 At Hongkong a species is found almost identical in size, color, and form, and which 

 only differs in having an additional pair of bristles on the scutellum. Parasites of 

 the melon fly could no doubt be procured from that country." 



(9) Smith, J. G. 



1902. In Ann. Rpt. Hawaii. Agr. Exp. Sta., U. S. Dept. Agr. Off. Exp. 



Stas. Rpt., 1902, p. 324. 

 Four-line reference as follows : ' A fly is doing great damage to the cucurbits 

 by stinging and depositing its eggs in the young fruit. The larvae, on hatching, 

 burrow into the tissue, causing decay. As a result a good watermelon brings from 

 50 cents to $1 on the fruit stands of Honolulu. 



(10) Smith, J. G. 



1903. In Ann. Rpt. Hawaii. Agr. Exp. Sta., 1903, U. S. Dept. Agr. Off. 



Exp. Stas. Rpt, 1903, p, 417. 



A 2-line reference to an investigation of melon-fly ravages at Wahlawa. Oahu. 



(11) Van Dine, D. L. 



1904. Insecticides for use in Hawaii. In Hawaii. Agr. Expt. Sta. Bui. 3, 



21 p., 7 fig. 



A 5-line reference as follows, p. 7 : 



Watermelons and muskmelons are a luxury, a good melon bringing 50 cents to §1 

 at the fruit stands in Honolulu. These products could be raised in certain sections, 

 in quantities great enough to bring them within the reach of every table, were it not 

 for the attack of the melon fly (Dacus cucurbitce). 



