Abstract
Seventeen comparisons of blacklight traps were made to determine the effects of trap components, ultraviolet output, killing agents, and trap placement on captures of Laspeyresia caryana (Fitch) moths, and on the total weight of all insects caught. Placement of traps dose to the fruiting area of a pecan tree was found to be the most important consideration, but catches of L. caryana were increased by increases in total output of ultraviolet radiation. Baffles on the trap did not aid in the catch of L. caryana and may increase the catch of unwanted insects. The closeness of the lamp to the collecting funnel appeared to be important, but an increase in the funnel diameter was of minor importance.
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