Abstract
Treated population levels of the red oak borer, Enaphalodes rufulus Haldeman, were reduced by 63 to 68% compared to untreated populations. Treatment of forest management units consisted of felling and sectioning all “brood trees” in ca. 34 ha of east-central Ohio oak/hickory stands. Less than 1% of the potential crop trees were sacrificed to treatment in each management unit. Costs ranged from $16–18/ha, and benefits ranged from $528–1232/ha, assuming an 80-year timber management regimen. Red oak borer larvae (3- to 6-month-old) in felled trees were preyed on by ants of the genus Aphaenogaster and tunnels made by 12- to 20-month-old larvae were colonized by female ants Camponotus pennsylvanicus (DeGeer).

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