Abstract
Ambrosia beetles were collected on adhesive paper traps that were set on cages containing logs of Quercus serrata and Q.crispula treated in various ways. Except for a few males of P.quercivorus that were collected at logs that were split into four parts 20 days after being cut, this beetle was not attracted to any logs, including logs inoculated with an unidentified oak-infecting fungus that is associated with this beetle. Many other ambrosia beetles were collected at autoclaved logs. This result suggested that the response of P.quercivorus to the odor of host trees was different from that of other ambrosia beetles.
