Abstract
This review of the tribe Xyleborini (Coleoptera: Scolytidae) includes two genera,XyleborusEichhoff, with 17 species, andXylosandrusReitter, containing 3 species. All species are described and most are illustrated. Keys for the separation of the genera and species are provided. Distributional and biological data are given. New combinations are:Xyleborus obliquus(Leconte) (=Pityophthorus obliquusLeconte);X.lecontei(Hopkins) (=Ambrosiodmus leconteiHopkins), andX.sayi(Hopkins) (=Anisandrus sayiHopkins). New synonymies are:Xyleborus obliquus(Leconte) (=Ambrosiodmus linderaeHopkins);X.obesusLeconte (=Anisandrus populiSwaine);X.ferrugineus(Fabricius) (=X.retusicollisZimmerman andX.soltauiHopkins);X.xylographus(Say) (=X.inermisEichhoff andX.planicollisZimmerman);X.volvulus(Fabricius) (=X.schwarziHopkins andX.rileyiHopkins), andX.howardiHopkins (=X.fitchiHopkins). A Japanese species,X.rubricollisEichhoff, is reported from the United States for the first time. A neotype is designated forX.xylographus(Say).

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