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0.5 percent gamma adult ambrosia beetles adult beetles bark fig bark or wood bark remains bark surface bark to loosen beetle Xylobiops basilaris beetles and ambrosia beetles are active beetles Xyloterinus politus benzene black-horned pine borer causes the bark cell chemical crevices cut logs cylindrical damage Diffusion Processes entrance hole Figure flatheaded borers Forest fuel oil gallery gallon hatch heartwood ical infested injury inner bark insecticidal juniper kiln Larva or grub lay their eggs lindane log cabins mallets material mauls Methyl bromide Monochamus titillator F natural length natural size oval period phloem pine sawyer Monochamus powder-post beetle Xylobiops preservative Pressure Impregnation pupa push roundheaded borers rustic furniture Rustic Wood sapwood sawyer Monochamus titillator Seasonal Cutting shuttle blocks slabs soaked southern pine sawyer species of insect sprayed spring and summer stages struction of rustic summer months taining tarpaulin tightly tion toxic treated treatment ture wood borers Xylobiops basilaris Say