The black fly of citrus and other subtropical plants . BULLETIN No. 885 Contribution from the Bureau of EntomologyL. O. HOWARD, Chief. Washington, D. C. December 11,1920 THE BLACK FLY OF CITRUS AND OTHER SUB-TROPICAL By Harry F. Dietz, Entomological Inspector, Bureau of Entomology, United StatesDepartment of Agriculture, and James Zetek, Entomologist, The Panama CONTENTS. Page. Introductory ... 1 The scientific name of the insect and to whom it should be accredited 2 Literature 3 Origin and distribution 3 Spread of the insect in the New World. 6 Food plants 14 Injury 18 Life h
The black fly of citrus and other subtropical plants . BULLETIN No. 885 Contribution from the Bureau of EntomologyL. O. HOWARD, Chief. Washington, D. C. December 11,1920 THE BLACK FLY OF CITRUS AND OTHER SUB-TROPICAL By Harry F. Dietz, Entomological Inspector, Bureau of Entomology, United StatesDepartment of Agriculture, and James Zetek, Entomologist, The Panama CONTENTS. Page. Introductory ... 1 The scientific name of the insect and to whom it should be accredited 2 Literature 3 Origin and distribution 3 Spread of the insect in the New World. 6 Food plants 14 Injury 18 Life history and habits „ 22 Eggs 29 First larval instar 31 Second larval instar 32 Third larval instar 33 Fourth instar, orpupa 34 history and habits—Continued. Fifthinstar, adult orimago 36 Technical description 39 Seasonal history 42 Parthenogenesis 44 Natural factors that tend to control the black fly in the Canal Zone 44 Natural enemies 45 Artificial control 45 Possibility of the black fly being introducedinto the United States and factors influ-encing its establishment here 47 Summary 52 Literature cited 53 INTRODU
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