Abstract
Flight behavior and response to blacklight of black cutworm (BC), Agrotis ipsilon (Hufnagel) and European corn borer (ECB), Ostrinia nubilalis (Hübner) adults were determined in laboratory tests at temperatures ranging from 0–55°C. ECB was tested at 2 air moisture conditions, less than 30% RH and 30–60% RH, while BC was only tested at one condition, between 30–60% RH. BC moths were active at lower temperatures (3°C) than were ECB (15°C). Both species were above 90% active from the lower temperature limits up to 45°C. Male BC moths were slightly less responsive than females to blacklight. Male and female ECB moths responded similarly except at low temperatures. The peak for ECB flight response occurred at higher temperatures in conditions of low relative humidity than in conditions of moderate humidity.
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