. Bulletin du Ministère de l'Agriculture des États-Unis. L'agriculture. BULLETIN 2 401, U.S. DEPARTMENT OF AGRICULTURE. à l'absence d'action concertée et intelligente entre l'oriental aux maraîchers. Le but de ce bulletin est, par conséquent, d'appeler l'attention sur les ravages sans précédent de ce ravageur en Hnwaiian les îles et le danger d'introduire dans la partie continentale des États-Unis, et d'enregistrer de nouveaux faits concernant sa biologie, plutôt que d'offrir une satisfactorv méthode de contrôle. L'origine. Le vrai Dacinae, la sous-famille des Trypetidae non européens, à laquelle appartient la mouche du melon, sont presque avec

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. Bulletin of the U.S. Department of Agriculture. Agriculture. 2 BULLETIN 401, U. S. DEPARTMENT OF AGRICULTURE. to the lack of concerted and intelligent action among the oriental market gardeners. The purpose of this bulletin is, therefore, to call attention to the unprecedented ravages of this pest in the Hnwaiian Islands and the danger of introducing it into the mainland United States, and to record new facts concerning its biology, rather than to offer a satisfactorv method of control. ORIGIN. The true Dacinae, the subfamily of the Trypetidae, to which the melon fly belongs, are almost without exception tropical or subtrop- ical in distribution. Most of the well-defined genera have been found by Bezzi to show a restricted area of habitation and to be almost exclusively confined to the Old World. Indeed, the few species Avhich. Fig. 1.—The melon fly (Bactrocera cucurbitae) : AduU female. Greatly enlarged. (Original.) are recorded from widely separated countries have reached their present distribution not by natural spread but by the assistance of man. The melon fly is a good example of a pest knoAvn to have been artificially introduced to new countries. Bezzi. who has given the most complete and recent review of fruit flies, stated in 1913 that the orig- inal home of the melon fly is India. Other entomologists who have traveled in the Orient for the purpose of making fruit-fly studies, particularly Compere, Froggatt, and Muir, agree with Bezzi as to its Indian origin. Perkins stated that its true home is either Japan or China, but this statement was made in 1902, before the discovery of the melon fly in India and before the studies of Bezzi were undertaken.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of D

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