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      Review of the genus Chasmogenus Sharp, 1882 of northeastern South America with an emphasis on Venezuela, Suriname, and Guyana (Coleoptera, Hydrophilidae, Acidocerinae)

      , 1 , , 1

      ZooKeys

      Pensoft Publishers

      South America, aquatic beetles, new species, new synonymy, taxonomy

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          Abstract

          The water scavenger beetle genus Chasmogenus Sharp, 1882 is reviewed in northeastern South America using an integrative approach that combines adult morphology and molecular data from the gene cytochrome c oxidase I (COI). Eighteen new species are described: Chasmogenus acuminatus sp. nov. (Brazil, French Guiana, Guyana, Suriname), C. amplius sp. nov. (Venezuela), C. berbicensis sp. nov. (Guyana), C. brownsbergensis sp. nov. (Suriname), C. castaneus sp. nov. (Venezuela), C. clavijoi sp. nov. (Venezuela), C. cuspifer sp. nov. (Venezuela), C. flavomarginatus sp. nov. (Venezuela), C. gato sp. nov. (Venezuela), C. guianensis sp. nov. (Suriname, Guyana), C. ignotus sp. nov. (Brazil), C. ligulatus sp. nov. (Suriname), C. lineatus sp. nov. (Venezuela), C. pandus sp. nov. (Brazil, French Guiana, Suriname), C. schmits sp. nov. (Suriname), C. sinnamarensis sp. nov. (French Guiana), C. tafelbergensis sp. nov. (Suriname), and C. undulatus sp. nov. (Guyana). We found genetic support for an additional new species in Guyana which is currently only known from females that we refer to as Chasmogenus sp. C. We examined the holotypes of the four species previously known from the region, and found that C. occidentalis García syn. nov. and C. yukparum García syn. nov. are conspecific with C. bariorum García, 2000 and are synonymized with that species, which is here redescribed. We redescribe C. australis García and expand the range of this species to include northern Brazil, Guyana, and French Guiana. All species are aquatic, with most being associated with forested streams and forest pools. Of the 21 species, more than half (11) are only known from a single locality indicating the genus may have many more micro-endemic species yet to be discovered in the region. Characters of the male genitalia are essential for confirming the identity of some species, consequently it is not always possible to make positive identifications of unassociated female specimens based on morphology alone. Habitus images are provided as well as a revised key to the genus for northeastern South America.

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          Most cited references 7

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          Molecular phylogeny, evolution and classification of the Hydrophilidae (Coleoptera)

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            The hydrophiloid beetles. Phylogeny, classification and a revision of the genera (Coleoptera: Hydrophilidae).

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              • Article: not found

              Four new species and first nominal record of Chasmogenus Sharp, 1882 (Coleoptera: Hydrophilidae) from Brazil

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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
                19 May 2020
                : 934
                : 25-79
                Affiliations
                [1 ] Department of Ecology & Evolutionary Biology, and Division of Entomology, Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA University of Kansas Lawrence United States of America
                Author notes
                Corresponding author: Rachel R. Smith ( rr.smith816@ 123456ku.edu ); Andrew Edward Z. Short ( aezshort@ 123456ku.edu )

                Academic editor: M. Michat

                Article
                49359
                10.3897/zookeys.934.49359
                7250940
                Rachel R. Smith, Andrew Edward Z. Short

                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.

                Funding
                United States National Science Foundation
                Categories
                Research Article
                Hydrophilidae
                Taxonomy
                South America

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