Spectral Response of Certain Stored-Product Insects to Electromagnetic Radiation1

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Abstract
Laboratory studies were conducted to determine the spectral response of seven species of stored-product insects. Nine wavebands of radiation between 280.4 mµ and 600.0 were used for the tests. Four species preferred a waveband which peaked near 500 mµ and one a waveband between 334 to 365 mµ. Another species showed no preference but generally migrated to the light for all wavelengths between 334 and 546 mµ. The seventh species showed insufficient reaction to be conclusive. Additional studies showed that males were generally attracted in greater numbers than females. The reaction of all tested species of insects was increased significantly by an increase in intensity. In general, no change in waveband preference was indicated as the intensity was increased.