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A REVISION OF THE GENUS LORDITHON THOMSON OF NORTH AND CENTRAL AMERICA (COLEOPTERA: STAPHYLINIDAE)

Published online by Cambridge University Press:  31 May 2012

J. M. Campbell
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Abstract

The species of the genus Lordithon Thomson (Staphylinidae: Tachyporinae) of North and Central America are revised. Thirty-seven species are recognized. Sixteen new species are described: scutellaris, appalachianus and notabilis from eastern North America; difficilis and oregonus from the Pacific Northwest; fungicola transcontinental in North America; and nubicola, dubius, newtoni, howdeni, ashei, hidalgoensis, antennatus, consors, blandus, and oreophilus from Mexico. The following species names are placed in synonymy: cascadensis hatchi Malkin (= cascadensis Malkin); cincticollis Say (= thoracicus thoracicus Fabricius); occiduus Casey (= thoracicus thoracicus Fabricius); alticola Sharp (= obliquus Sharp); kelleyi Malkin (= bimaculatus Couper) and elefas Bernhauer (= longiceps LeConte). L. venustus Melsheimer is reduced to a subspecies of thoracicus Fabricius. The species festivus Sharp, obliquus Sharp, smithi Bernhauer, and mexicanus Bernhauer are transferred to Lordithon from the genus Bolitobius. Lordithon lunulatus is doubtfully recorded from North America for the first time.The usage of the generic group names Lordithon Thomson, Bolitobius Samouelle, Megacronus Stephens, Bryocharis Boisduval and Lacordaire, Carphacis des Gozis, and Bolitobus Tottenham is discussed. The genus Lordithon is divided into two subgenera, Lordithon Thomson and Bolitobus Tottenham (not Bolitobius Samouelle). The male aedeagus and other major diagnostic characters are illustrated and the distribution of each species mapped.The species rubescens Hatch, varions Hatch, fenderi Hatch and biseriatus Mannerheim are transferred from Lordithon to the genus Bryoporus Kraatz.Lectotypes are designated for the following species: niger Gravenhorst, axillaris Gravenhorst, festivus Sharp, anticus Horn, poecilus Mannerheim, facilis Casey, arizonensis Bernhauer, obliquus Sharp, alticola Sharp, smithi Bernhauer, mexicanus Bernhauer, cinctus Gravenhorst, gentilis LeConte, elefas Bernhauer and rostratus LeConte. Neotypes were designated for: angularis Sachse, trimaculatus Say, cincticollis Say, obsoletus Say and atricaudatus Say.

Résumé

L'auteur étudie les espèces du genre Lordithon Thomson (Staphylinidés : Tachyporinés) d'Amérique du Nord et Centrale. Il reconnaît 37 espèces et décrit 16 nouvelles espèces, soit scutellaris, appalachianus et notabilis de l'est de l'Amérique du Nord; difficilis et oregonus du nord-ouest de la côte du Pacifique; fungicola, espèce transcontinentale d'Amérique du Nord; ainsi que nubicola, dubius, newtoni, howdeni, ashei, hidalgoensis, antennatus, consors, blandus et oreophilus du Mexique. Les noms d'espèces suivants sont considérés comme synonymes, soit cascadensis hatchi Malkin (= cascadensis Malkin); cincticollis Say (= thoracicus thoracicus Fabricius); occiduus Casey (= thoracicus thoracicus Fabricius); alticola Sharp (= obliquus Sharp); kelleyi Malkin (= bimaculatus Couper) et elefas Bernhauer (= longiceps LeConte). L. venustus Melsheimer en est réduite à une sous-espèce de thoracicus Fabricius. Les espèces festivus Sharp, obliquus Sharp, smithi Bernhauer et mexicanus Bernhauer passent du genre Bolitobius au genre Lordithon. La présence de L. lunulatus est enregistrée pour la première fois sous toutes réserves en Amérique du Nord.

L'utilisation des noms génériques Lordithon Thomson, Bolitobius Samouelle, Megacronus Stephens, Bryocharis Boisduval et Lacordaire, Carphacis des Gozis et Bolitobus Tottenham est étudiée. Lordithon est divisé en deux sous-genres, soit Lordithon Thomson et Bolitobus Tottenham (non pas Bolitobius Samouelle). L'ouvrage illustre l'édéage mâle et d'autres caractères diagnostiques importants, et représente sur une carte la distribution de chaque espèce.

Les espèces rubescens Hatch, varians Hatch, fenderi Hatch et biseriatus Mannerheim passent du genre Lordithon au genre Bryoporus Kraatz. Des lectotypes sont désignés pour les espèces suivantes, soit niger Gravenhorst, axillaris Gravenhorst, festivus Sharp, anticus Horn, poecilus Mannerheim, facilis Casey, arizonensis Bernhauer, obliquus Sharp, alticola Sharp, smithi Bernhauer, mexicanus Bernhauer, cinctus Gravenhorst, gentilis LeConte, elefas Bernhauer et rostratus LeConte. Des néotypes sont désignés pour les espèces angularis Sachse, trimaculatus Say, cincticollis Say, obsoletus Say et atricaudatus Say.

Type
Research Article
Information
The Memoirs of the Entomological Society of Canada , Volume 114 , Supplement S119 , 1982 , pp. 5 - 116
Copyright
Copyright © Entomological Society of Canada 1982

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