36 research outputs found

    Three alien bark and ambrosia beetles (Coleoptera, Curculionidae, Scolytinae) new to Switzerland

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    Identifying alien species is important to ensure the early detection of biological invasions and survey shifts in species distributions in the context of global change. Here, we report on three alien bark and ambrosia beetles newly detected in Switzerland: Cyclorhipidion distinguendum (Eggers, 1930), C. pelliculosum (Eichhoff, 1878), and Hypothenemus eruditus (Westwood, 1834). These species were recorded for the first time during a comprehensive survey of saproxylic beetles accross major forest types and along an altitudinal gradient during the entire growing season in the southern Alps, in the canton of Ticino. Their local abundance and number of occurrences accross different lowland forest habitats, including alluvial forests of national importance, indicates that all three species are already naturalized. Given their polyphagy, it is likely that all three species will become more extensively distributed across Switzerland, with a yet unknown environmental impact

    Ground beetle (Coleoptera: Carabidae) communities on green roofs in Switzerland : synthesis and perspectives

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    Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch)Green roofs have recently gained recognition for their potential contribution to urban ecosystems by providing, among other services, habitat for plants and animals, and stepping stones for mobile organisms, thereby enhancing permeability among habitat patches across densely built cities. In Switzerland, investigations over the past 20 years on more than one hundred distinct green roofs across six cities have provided an unprecedented dataset on ground beetles, albeit with information that is scattered across unpublished reports and local databases. We present here for the first time a synthesis of the state of knowledge of ground beetle communities from green roofs in Switzerland. We describe 91 ground beetles species (19,428 individuals) and highlight patterns of species occurrence and composition across green roofs and cities. Most of the roofs host ground beetle communities dominated by five common mobile species with quite diversified ecological requirements. In addition, we observed nine species (10% of all species collected) that are conservation concerns in Switzerland and Central Europe as well as numerous stenotopic species (from grasslands and pioneer vegetation). This indicates that, besides sustaining local populations of common species, green roofs can also offer suitable ecological conditions of high conservation interest. We suggest both improving the design of green roofs (composition and configuration of vegetation, as well as soil depth and substrate composition) to increase their ecological value for species with the most different ecological needs, and to integrate green roofs into urban planning to make them more efficient as biodiversity supports

    Excursions 2019 groupe entomologie

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    Annotated checklist of the Coccinellidae (Coleoptera, Coccinelloidea) of Switzerland

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    An updated checklist of the Swiss species belonging to the family Coccinellidae is presented and briefly discussed. This checklist includes 81 species (82 taxa including the subspecies) and is based on 33'976 occurrences obtained from the identification of specimens held in museum and private collections, as well as from records taken from the literature. Exochomus oblongus Weidenbach, 1859, Hyperaspis peezi FĂĽrsch, 1976, Hyperaspis pseudopustulata Mulsant, 1853, Nephus bisignatus (FĂĽrsch, 1984), Rhyzobius forestieri (Mulsant, 1853), Scymniscus anomus (Mulsant & Rey, 1852) and Scymnus doriae Capra, 1924 are recorded for the first time in Switzerland. In parallel, Chilocorus similis (P. Rossi, 1790), Bulaea lichatschovii (Hummel, 1827), Ceratomegilla rufocincta rufocincta (Mulsant, 1850), Coccinella undecimpunctata undecimpunctata Linnaeus, 1758, Chnootriba elaterii (P. Rossi, 1794), Henosepilachna vigintioctopunctata (Fabricius, 1775), Hyperaspis quadrimaculata (Redtenbacher, 1843), Scymnus marginalis (P. Rossi, 1794) and Novius cardinalis (Mulsant, 1850) were recorded from Switzerland in the past but are excluded from this list, either due to insufficient documentation or because they represent isolated cases of introductions of non-indigenous species that never became established in Switzerland

    Liste commentée des Bostrichoidea et Derodontoidea de Suisse (Coleoptera: Bostrichiformia, Derodontiformia)

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    Une liste actualisée des espèces suisses appartenant aux superfamilles des Bostrichoidea et des Derodontoidea est présentée et brièvement commentée. Au total, 151 espèces appartenant aux familles des Bostrichidae (11 espèces), Dermestidae (41), Ptinidae (96), Derodontidae (2) et Nosodendridae (1) sont considérées comme indigènes ou naturalisées en Suisse sur la base de 19’820 occurrences issues de l’identification de spécimens de musées et de collections privées, ainsi que de la littérature. En parallèle, 68 taxa annoncés de Suisse par le passé sont exclus de la liste car insuffisamment documentés ou provenant uniquement d’importations isolées d’espèces allochtones non établies

    Liste commentée des Cleroidea (Coleoptera) de Suisse

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    Une liste actualisée des espèces suisses appartenant à la superfamille des Cleroidea est présentée et brièvement commentée. La présence de 106 espèces de Biphyllidae (2 espèces), Byturidae (2), Cleridae (18), Melyridae (66), Phloiophilidae (1), Rhadalidae (8) et Trogossitidae (9) est attestée en Suisse sur la base de 18’989 occurrences issues de l’identification de spécimens de musées et de collections privées, ainsi que de la littérature. En parallèle, 37 espèces annoncées de Suisse par le passé sont exclues de la liste car insuffisamment documentées
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