CONTENTS 
Page. 
The orange thrips: A report of progress for the years 1909 and 1910 
~ . . y P. R. Jones and J. R. Horton. . 1 
Introduction 1 
Original home and distribution 2 
Food plants 2 
Character and extent of injury 3 
Description and life history 4 
The adult 4 
The egg 5 
The larva 5 
The pupa 5 
Seasonal history 6 
Interrelation of abundance of thrips and food plants 7 
Life cycle 8 
Habits 9 
Experiments with methods of control 9 
Cultivation 9 
Fumigation 10 
Spraying 10 
Experiments to determine killing effect of different sprays 10 
Experiments to prevent marking of the fruit 10 
Experiments with nursery trees 12 
Spray injury 13 
Recommendations .' 13 
Time of application 13 
Spray dilutions '. 13 
How to spray 14 
Summary 15 
The red-banded thrips (Heliothrips rubrocinctus Giard) H. M. Russell. . 17 
Introduction „ 17 
History ! 17 
Recent records ! 19 
Nature and extent of injury 19 
Origin and distribution. . 20 
Classification 21 
Description 21 
The adult 21 
The egg 21 
The first-stage larva 21 
The second-stage or mature larva 22 
The young nymph or prepupa 22 
The full-grown nymph or pupa , 23 
Habits of the adult 23 
Hatching of the egg 24 
Habits of the larva 24 
Habits of the prepupa and pupa 25 
Food plants 25 
Life cycle 25 
Natural control 28 
Artificial control 28 
Bibliography 28 
Index 31 
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