STATE PIANT 
BOARD OF 
Gl^ UBRAHy 
REPORT OF THE CHIEF OF THE BUREAU OF ENTO- 
MOLOGY AND PLANT QUARANTINE, 1937 
United States Department of Agriculture, 
Bureau of Entomology and Plant Quarantine, 
Washington^ D. C.^ September 15^ 1937, 
Hon. Henry A. Wallace, 
Secretary of Agriculture, 
t 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, 1937. 
Sincerely yours, 
Lee a. Strong, Chief, 
contents 
Page 
Introduction 1 
Publications and editorial work 2 
Library 2 
Insect pest survey and information 2 
Fruit insect investigations.. 3 
Fruitfly investigations 7 
Mexican fruitfly control 8 
.Japanese beetle quarantine and control 11 
Piiony peach disease control 17 
Control of peach mosaic disease 18 
Citrus canker eradication 18 
Insects affecting forest and shade trees 19 
Gypsy moth and brown-tail moth control 22 
Gypsy moth and brown-tail moth quarantine 
enforcement 28 
Dutch elm disease eradication 29 
White pine blister rust controL 33 
Enforcement of the white pine blister rust 
quarantine 38 
Cereal and forage insect investigations 38 
European corn borer inspection and certifica- 
tion 43 
Pagfl 
Black stem rust quarantine enforcement 43 
Barberry eraciicatinn 43 
Truck crop and garden insect investigations... 48 
Cotton insect investigations 55 
Pink boUworm control 60 
Thurberia weevil control 63 
Bee culture 64 
Investigations of insects affecting man and 
animals 65 
Screwworm control 71 
Insect identification 75 
Foreign parasite introduction 75 
Control investigations 77 
Insecticide investigations 79 
Transit inspection 84 
Terminal inspection of mail shipments 85 
Convictions and penalties imposed for viola- 
tion of the Plant Quarantine Xct 85 
Foreign plant quarantines 86 
Certification for export 97 
INTRODUCTION 
The organization of the Bureau activities has continued along substantially 
the same lines and with the same division leaders as during the previous year. 
The special investigations begun last year with allotments from processing 
taxes collected in Hawaii and Puerto Kico were concluded. A small amount 
of funds available for work in Hawaii remains available and will be used 
for special studies having a direct bearing on the control of fruitflies in 
Hawaii during the fiscal year 1938. 
As in the preceding year, activities concerned with the eradication and 
control of plant pests were materially expanded by allotments of emergency 
funds for relief. The results of the work done under these special allotments 
are discussed under appropriate headings and include the following activities: 
Gypsy month control, brown-tail moth control. Dutcli elm disease eradication, 
barberry eradication, white pine blister rust control, citrus canker eradif-ation, 
phony peach disease control, eradication of peach mosaic, elimination of wild 
cotton in southern Florida, and the destruction of 'riiiirbcria ])lants in south- 
eastern Arizona. 
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