Observations on Platypus flavicornis (Coleoptera: Platypodidae) in Southern Pine Beetle Infestations1

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Abstract
The flight and attack pattern of the ambrosia beetle P. flavicornis (F.) was studied in southern pine beetle, Dendroctonus frontalis (Zimmermann) infestations in eastern Texas. The ambrosia beetle flew mostly within 9 feet of the ground and attacked the lower stems of pines which had been mass-attacked previously by the southern pine beetle. Four to six days elapsed from the time of D. frontalis mass-attack until P. flavicornis began to land on the trees. The rate of landing increased until the 10th day and then declined slowly. The slow accumulation of attacks suggests the orientation primarily to odors originating from the host, as opposed to insectproduced volatiles.

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