Insects Captured in Light Traps With and Without Baffles

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Abstract
For several years the writer has studied the effects of variations in insect light trap designs on the species and numbers of insects captured. Among these variations are the value of baffles. During the summer of 1957 two traps were operated adjacent to each other in State College. The positions of these traps were alternated every other night. One trap, which has been designated as the Pennsylvania insect-light trap with four interesting baffles, 5 × 20 inches, a 12-inch funnel and a 15-watt black-light fluorescent lamp, was used. The other trap was similar except the baffles were omitted and the trap was held together by means of four small wires.

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