REVISION OF THE SUBFAMILY XANTHOLININAE OF AMERICA NORTH OF MEXICO (COLEOPTERA: STAPHYLINIDAE)
Authors: Smetana Aleš 
Published: April 2011

A revision of the staphylinid subfamily Xantholininae (Coleoptera) of America north of Mexico is presented including a historical review, a discussion of diagnostic characters and techniques, and some conclusive remarks, mostly on the zoogeography of this group in North America.Twenty-eight genera and 105 species are recognized. Six genera and 47 species are described as new, one new name is proposed for a species in the genusOxybleptes, and new combinations are proposed for 25 species.NematolinusCasey, 1906, andOligolinusCasey, 1906, are placed in synonymy withLithocharodesSharp, 1876;LeiolinusCasey, 1906, withHesperolinusCasey, 1906;ParaphallusBordoni, 1972, withXantholinusDejean, 1821, andPhalacrolinusCoiffait, 1972, is placed in synonymy withHypnogyraCasey, 1906. On the specific level,Platyprosopus texanusMoore, 1963, is placed in synonymy withP.mexicanusSharp, 1887;Diochus brevipennisCasey, 1906,D.thoracicusCasey, 1906, andD.pallidicepsCasey, 1906, withD.schaumiKraatz, 1860;Baptolinus fraternusCasey, 1906, withAtrecus punctiventris(Fall, 1901);Nudobius nubipennisCasey, 1906, andGyrophypnus gilvipennisCasey, 1906, withNudobius cephalus(Say, 1834);Nudobius limbalis, Casey, 1906,N.corticalisCasey, 1906, andN.debilisCasey, 1906, withN.pugetanusCasey, 1906;Nudobius phoenicisCasey, 1906, withN.arizonicusCasey, 1906;Nudobius elegantulusCasey, 1906, withN.luridipennisCasey, 1906;Leptacinus nigritulusLeConte, 1880, withL.pusillus(Stephens, 1833);Lithocharodes pallidusCasey, 1906, withL.nigripennis(LeConte, 1863);Hesperolinus angustusCasey, 1906, andH.pomonaeCasey, 1906, withLinohesperus nanus(LeConte, 1880);Hesperolinus bicolorCasey, 1906, withLinohesperus brunnescens(LeConte, 1880);Stictolinus aequalisCasey, 1906, withS.grandiceps(LeConte, 1863);Stictolinus scolopaceusCasey, 1906, withS.flavipes(LeConte, 1863);Leiolinus tarsalisCasey, 1906, andL.uteanusCasey, 1906, withHesperolinus parcus(LeConte, 1863);Xantholinus nitidicollisReitter, 1908, andX.scoticusJoy, 1913, withGyrohypnus angustatusStephens, 1832;Xantholinus temporalisLeConte, 1880, andX.floridaeDuvivier, 1883, withNeohypnus attenuatusErichson, 1839;Gyrohypnus bipartitusCasey, 1906, andG.infumatusCasey, 1906, withNeohypnus dimidiatus(LeConte, 1880);Gyrohypnus oregonusCasey, 1906, andG.protractusCasey, 1906, withNeohypnus obscurus(Erichson, 1839);Gyrohypnus macilentusCasey, 1906, withNeohypnus hamatus(Say, 1834);Gyrohypnus mollinusCasey, 1906, withNeohypnus pusillus(Sachse, 1852);Gyrohypnus fucosusCasey, 1884, withNeohypnus fusciceps(LeConte, 1880);Xantholinus aequalisFauvel, 1898, withX.linearis(Olivier, 1794);Xantholinus miguelensisMéquignon, 1942, andXestolinus oregonusFender, 1946, withX.longiventrisHeer, 1839;Hypnogyra vernicataCasey, 1906, withH.gularis(LeConte, 1880);Xestolinus ovicepsCasey, 1906,X.frontalisHatch, 1957, andXantholinus indianensisBlatchley, 1910, withXestolinus abdominalisCasey, 1906.Neotypes are designated forNudobius cephalus(Say),Neohypnus hamatus(Say), andNeohypnus pusillus(Sachse).Lectotypes are designated forPlatyprosopus mexicanusSharp,Diochus schaumiKr.,D.brevipennisCsy.,D.thoracicusCsy.,D.pallidicepsCsy.,Atrecus americanus(Csy.),A.punctiventris(Fall),A.fraternus(Csy.),A.quadripennis(Csy.),Parothius californicus(Mannh.),Thyreocephalus nigerrimus(Sharp),Nudobius palliatus(Melsh.),N.nubipennisCsy.,N.pugetanusCsy.,N.limbalisCsy.,N.corticalisCsy.,N.debilisCsy.,N.arizonicusCsy.,N.phoenicisCsy.,N.luridipennisCsy.,N.elegantulusCsy.,Leptacinus nigritulusLeC.,L.seriatusLeC.,Stenistoderus rubripennis(LeC.),Lithocharodes ruficollis(LeC.),L.pallidusCsy.,L.longicollis(LeC.),Habrolinus tahoensisCsy.,Linohesperus piceus(Csy.),L.borealis(Csy.),L.alticola(Csy.),L.angustus(Csy.),L.pomonae(Csy.),L.brunnescens(LeC.),L.bicolor(Csy.),Stictolinus grandiceps(LeC.),S.aequalisCsy.,S.flavipes(LeC.),S.scolopaceusCsy.,S.franciscanusCsy.,Hesperolinus parcus(LeC.),Gyrohypnus obsidianus(Melsh.),Neohypnus attenuatus(Er.),N.temporalis(LeC.),N.dimidiatus(LeC.),N.infumatus(Csy.),N.bipartitus(Csy.),N.picipennis(LeC.),N.sanguinipennis(LeC.),N.obscurus(Er.),N.oregonus(Csy.),N.protractus(Csy.),N.macilentus(Csy.),N.lustrans(Csy.),N.mollinus(Csy.),N.fragilis(Csy.),N.linearis(Blatchley),N.fusciceps(LeC.),N.melanops(Csy.),N.emmesus(Grav.),N.sanguinolentus(Melsh.),N.luteiventris(Csy.),Hypnogyra vernicataCsy.,H.micansCsy.,Xestolinus abdominalisCsy.,X.ovicepsCsy., andX.indianensis(Blatchley).Keys to tribes, genera, and species are provided. The tribes and genera are described; each species is described and illustrated, all available bionomic and distributional data are presented and distributional records are mapped.