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European corn borer moth photo by R. Bessin.
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European
Corn Borer
European corn borer moths are yellowish brown with irregular
darker olive-brown bands running as wavy lines across their wings. They
are very pointed, similiar in shape to a delta winged jet. Wingspan for
a European corn borer moth is about 1 inch.
The first generation of adult European corn borer moths
fly in early to mid-May in Kentucky. Flight of the first generation should
begin at approximatley 550 degree days with the peak flight occuring at
approximatley 900 degree days. Current degree days for European corn borer
are available for many locations in Kentucky through the Agricultural
Weather Center maintained by the University of Kentucky Department
of Biosystems and Agricultural Engineering. Up-to-date European corn borer
estimates and maps
are available on this site as well. For more information on using day
degrees see EntFact-106
Prediciting European Corn Borer Bevelopment.
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European corn borer larva photo by R.
Bessin.
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Early planted corn has the greatest potential for damage
from the first generation. A second generation of ECB larva usually occurs
late June to August. Late planted corn is most attractive to this generation.
A third generation can occur from late July on. For additional information
see European
Corn Borer Scout Info Sheet and ENT-49 European Corn Borer. EntFact-301
Common Insects Attacking Peppers discusses European Corn Borer as
a pest in peppers.
The following graph shows the average trap counts for European
corn borer moths at the UK Research and Education Center for the five-year
period from 1997 through 2001. This information is also available through
the Kentucky
Pest News web site.
Trap Counts for European corn borer are available for
the following years:
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Original document: 5 November 2001
Last updated: 19 February 2004
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Scoutcat logo courtesy of C. Ware, copyright 2000
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1992