Oregon wireworm Order COLEOPTERA Family Elateridae Genus Melanotus Species longulus oregonensis Author (LeConte)
Oregon fir sawyer Order COLEOPTERA Family Cerambycidae Genus Monochamus Species scutellatus oregonensis Author (LeConte)
old house borer Order COLEOPTERA Family Cerambycidae Genus Hylotrupes Species bajulus Author (Linnaeus)
odd beetle Order COLEOPTERA Family Dermestidae Genus Thylodrias Species contractus Author Motschulsky
obscure root weevil Order COLEOPTERA Family Curculionidae Genus Sciopithes Species obscurus Author Horn
oak sapling borer Order COLEOPTERA Family Cerambycidae Genus Goes Species tesselatus Author (Haldeman)
nutgrass weevil Order COLEOPTERA Family Curculionidae Genus Athesapeuta Species cyperi Author Marshall
nutgrass billbug Order COLEOPTERA Family Curculionidae Genus Sphenophorus Species cariosus Author (Olivier)
