INSECT PEST SURVEY BULLETIN 
Vol. 20 
Supplement to No. 9 
December 20, 1940 
STATUS OE THE EUROPEAN CORN BORER IN 1940 
A, M. Vance, Entomologist 
Bureau of Entomology and. Plant Quarantine . 
United States Department of Agriculture— / 
Distribution 
In 1940 the European corn borer was found for the first time in the follow- 
ing counties of States previously infested: Champaign, De Kalb, Eord, Grundy, 
Iroquois, Kane, Kendall, Livingston, McHenry, McLean, Vermilion, and Winnebago, 
in Illinois; Harford- in Maryland; Brown in Ohio; Essex, Isle of Wight, James 
City, and New Kent, in Virginia; and Columbia, Portage, Walworth, and Waushara, 
in Wisconsin, 
— ' ' Information presented in this report was accumulated by the Bureau of 
Entomology and Plant Quarantine and by workers in the various States infested 
by the European corn borer ( Pyrausta. nubilalis Hbn.). The data were assembled 
and tabulated at the laboratory for European corn borer research, Toledo, Ohio, 
with W, A. Baker in charge. In 1940 the survey was conducted in 35 counties in 
Indiana, by the State Conservation Department; in l4 counties in Maine, in 17 
counties of New Jersey, and in 10 counties of Vermont, by the State departments 
of agriculture of those States; in co\mties of eastern New York, including 
Long Island, by the New York Agricultural Experiment Station, Geneva, N, Y.; 
and in 7 counties of New Hampshire by the New Hampshire Agricultural Experi- 
ment Station, The agricultural experiment stations of Eel aware and Maryland 
aided the Bureau in the survey in these two Stales. New county records of the 
European corn borer in 1940 we re contributed by the Natural History Survey and 
State department of agriculture of Illinois, by the State departments of a_gri- 
culture of Virginia and Wisconsin, and by the agricultural experiment station 
of Maryland. The Bureau of Entomology and Plant Quarantine appreciates the 
interest and cooperation of all States in which the survey was conducted and 
from which records of distribution were obtained in 1940. 
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