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      A remarkable new species of the rove beetle genus Anthobium Leach, 1819 from Eocene Baltic amber (Coleoptera, Staphylinidae, Omaliinae)

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          Abstract

          An unusual new omaliine species, Anthobium alekseevi sp. nov., is described and illustrated from Eocene Baltic amber, tentatively placed in the megadiverse genus Anthobium Leach, 1819. A new monotypic species-group is established. The new species can easily be distinguished from other species of the genus by the larger body, shape of the subrectangular pronotum, and the presence of a median carina on the prosternum and large, subtriangular tooth on the inner side of each mesotibia, likely exhibiting a peculiar sexual dimorphism in the male. Based on the study of the specimen with support of microtomographic images, a brief comparative analysis of a new species with described extant species of Anthobium is provided.

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          Most cited references 16

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          NOMENCLATURAL CHANGES IN THE STAPHYLINIDAE (INSECTA: COLEOPTERA)

           LEE HERMAN (2001)
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            A REVISION OF THE NORTH AMERICAN OMALIINAE (COLEOPTERA: STAPHYLINIDAE): THE GENERA ARPEDIUM ERICHSON AND EUCNECOSUM REITTER

             J. Campbell (1984)
            The North American species of the genera Arpedium Erichson, and Eucnecosum Reitter are revised. Five species are recognized, the holarctic species E. brachypterum (Gravenhorst), E. tenue (LeConte) and E. brunnescens (J. Sahlberg), the transcontinental boreal species A. cribratum Fauvel and the eastern United States species A. schwarzi Fauvel. Lectotypes are designated for E. brachypterum , A. cribratum , A. angulare Fauvel (= A. cribratum ), and A. schwarzi . The following new synonymy is established, Arpedium norvegicum var. sallasi Munster and Eucnecosum meybohmi Lohse (= E. tenue ) and Arpedium angulare Fauvel and A. columbiense Hatch (= A. cribratum ). All genera and species are described and illustrated with scanning electron photomicrographs and line drawings, four maps showing the North American distribution of each species are provided, and keys are presented to aid in the identification of all the species as well as the European species Arpedium quadrum (Gravenhorst). All available records and biological data for the species are summarized. The use of the generic name Eucnecosum Reitter is discussed and the transfer of brachypterum , tenue , and brunnescens from Arpedium to this genus by Lohse is confirmed. Résumé Cette étude constitue une révision taxonomique des espèces nord-américaines des genres Arpedium Erichson et Eucnecosum Reitter. Ces genres comptent 5 espèces valides, les espèces holarctiques E. brachypterum (Gravenhorst), E. tenue (LeConte) et E. brunnescens (J. Sahlberg), une espèce boréale et transcontinentale, A. cribratum Fauvel, et une espèce de l'est des Etats-Unis, A. schwarzi Fauvel. Un lectotype est désigné pour E. brachypterum , A. cribratum , A. angulare Fauvel (= A. cribratum ) et A. schwarzi . Les nouveaux synonymes suivants sont proposés, Arpedium norvegicum var. sallasi Munster et Eucnecosum meybohmi Lohse (= E. tenue ) et Arpedium angulare Fauvel (= A. cribratum ). Les genres et espèces sont décrits et illustrés à l'aide de dessins et de photographies prises au microscope électronique à balayage, la répartition géographique nord-américaine de chaque espèce est illustrée à l'aide d'une carte, et des tableaux facilitent la détermination des espèces ainsi que de l'espèce européenne Arpedium quadrum (Gravenhorst). Les mentions disponibles et les données biologiques pour les espèces sont résumées. L'utilisation du nom générique Eucnecosum Reitter est discuté et le transfert de brachypterum , tenue et brunnescens d' Arpedium à ce genre initié par Lohse est confirmé.
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              A Review of the Fossil History of Staphylinoidea

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2020
                05 October 2020
                : 973
                : 89-101
                Affiliations
                [1 ] Institute of Life Sciences and Technologies, Daugavpils University, Vienibas 13, Daugavpils, LV-5401, Latvia Daugavpils University Daugavpils Latvia
                [2 ] The Hokkaido University Museum, Kita 8, Nishi 5, Kita-ku, Sapporo 060-0808, Japan Hokkaido University Museum Kita Japan
                Author notes
                Corresponding author: Alexey V. Shavrin ( ashavrin@ 123456hotmail.com )

                Academic editor: J. Klimaszewski

                Article
                53940
                10.3897/zookeys.973.53940
                7550394
                Alexey V. Shavrin, Shûhei Yamamoto

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Staphylinidae
                Palaeontology
                Cenozoic
                Europe

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