. Bulletin of the Department of Agriculture. Agriculture. I BULLETIN No. 491 Contribution from Bureau of Entomology L. O. HOWARD. Chief. Washington, D. C. PROFESSIONAL PAPER June 30, 1917 THE MELON FLY IN HAWAIL By E. A. Back, Entomologist, and C. E. Pembertox, ScientifJc Assistant, Mediterranean and other Fruit Fly Investigatiom. â CONTENTS. Page. Introduction 1 Origin 2 Distribution 3 Source of Hawaiian infestation 4 Early history in Hawaii 4 Literature 5 Economic importance 7 Injury S Food plants 12 Life history and habits 18 The adult 19 The egg 32 Life history and habitsâContinued. T
. Bulletin of the Department of Agriculture. Agriculture. I BULLETIN No. 491 Contribution from Bureau of Entomology L. O. HOWARD. Chief. Washington, D. C. PROFESSIONAL PAPER June 30, 1917 THE MELON FLY IN HAWAIL By E. A. Back, Entomologist, and C. E. Pembertox, ScientifJc Assistant, Mediterranean and other Fruit Fly Investigatiom. â CONTENTS. Page. Introduction 1 Origin 2 Distribution 3 Source of Hawaiian infestation 4 Early history in Hawaii 4 Literature 5 Economic importance 7 Injury S Food plants 12 Life history and habits 18 The adult 19 The egg 32 Life history and habitsâContinued. The lar\a 34 The pupa 40 Length of life cycle 43 Seasonal history 44 Method of spread 44 Control measures ^ 45 Natural control 45 Artificial control ; 47 Summary '. 55 Bibliography S7 INTRODUCTION. The melon fly {Bactrocera cucurhitae Coq.) (fig. 1) is a pest intro- duced into the Hawaiian Islands from the Orient, about 1895. As shown by the reports of the quarantine officers of the Federal Horti- cpltural Board, it is being continually intercepted at the port of San Francisco in cargoes arriving from Honolulu, and there is danger that it will be introduced into continental United States. Together with the Mediterranean fruit fly {CeraUtis eapitata Wied.), also recently in- troduced, it has had a most ruinous effect upon horticultural pursuits of Hawaii. The equable climate and abundant food supply have given this pest an excellent opportunity to increase unmolested and, at the time the writers undertook the iuA-estigation herein reported, the melon fly had made impossible a free cultivation of the most valuable, economically, of the Cucurbitaceae and other truck crops. No natu- ral agencies have thus far been discovered which serve as a practical check upon its ravages, and artificial methods of control, especially control by poisoned-bait sprays, have been found inadequate, owing 65732'âBall. 401â17 1. Please note that these images are extracted from scanned page images th
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