Response of Pales Weevils to Natural and Synthetic Traps Under Field Conditions12

Abstract
No significant difference could be found in the numbers of Hylobius pales (Herbst) responding to traps made from sections of the pine bole taken at 3 different heights. Weevil responses were significantly greater to samples of peeled pine material containing abundant fresh resin than to conventional split bolts; and percent response appeared to be inversely related to the distance between the weevils and the pine material. Pine phloem or an ethanol extract thereof in a moisture-containing substrate placed beneath Masonite® panels in lieu of split-pine bolts performed effectively as a bait and successfully trapped pales weevils.

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