LIBRARY 
STATE PLANT BOARD 
REPORT OF THE CHIEF OF THE BUREAU OF ENTO- 
MOLOGY AND PLANT QUARANTINE, 1940 
United States Department of Agricui/tuke, 
Bureau of Entomology and Plant Quarantine, 
Washington, D. c '., August 31, 191$. 
Hon. Henry A. Wallace. 
Secretary of Agriculture. 
Dear Mr. Secretary : I submit herewith a report of the work of the 
Bureau of Entomology and Plant Quarantine for the fiscal year ended 
June 30. 1940. 
Sincerely yours, 
Lee A. Strong, Chief. 
CONTENTS 
Page 
Introduction 1 
Publications and editorial work 2 
Library 2 
Insect pest survey and information 3 
Fruit insect investigations 4 
Fruitfly investigations 12 
Mexican fruitfly control 12 
Japanese beetle quarantine and 
control 13 
Control of peach mosaic and phony 
peach diseases 22 
Citrus canker eradication 23 
Insects affecting forest and shade 
trees 23 
Gypsy and brown-tail moth control 28 
Gypsy and brown-tail moth quaran- 
tine enforcement 37 
Dutch elm disease eradication 39 
White-pine blister rust control 44 
Cereal and forage insect investiga- 
tions 50 
* White-fringed beetle control and eradi- 
cation 57 
Mormon cricket control 58 
Grasshopper control 58 
Chinch bug control 60 
Page 
European corn borer inspection and 
certification 60 
Barberry eradication 61 
Truck crop and garden insect investi- 
gations 66 
Sweetpotato weevil control and eradi- 
cation 74 
Cotton insect investigations 75 
I ink bollworm control and quarantine 
enforcement 82 
Thurberia weevil control 87 
Bee culture 88 
Investigations of insects affecting man 
and animals 91 
Insect identification 96 
Foreign parasite introduction 97 
Control investigations 101 
Insecticide investigations 104 
Transit inspection 111 
Terminal inspection of mail shipments. 112 
Convictions and penalties imposed for 
violations of the Plant Quarantine 
Act llli 
Foreign plant quarantines 113 
Certification for export , 128 
INTRODUCTION 
The organization of the Bureau activities remains practically un- 
changed. The eradication and control of plant pests have been con- 
tinued under a program expanded by allocations of emergency relief 
funds. 
One of the outstanding events of the year in the work of the 
Bureau of Entomology and Plant Quarantine is the completion of 
a building in Hoboken, N. J., which is being used for inspecting im- 
portations of plants and plant products for propagation. This 
building was completed in time so that the force from the old in- 
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