Untersuchungen zur aktuellen Verbreitung der schweizerischen Laufkäfer (Coleoptera: Carabidae) : Zwischenbilanz

Investigations on the present-day distribution of Swiss ground beetles (Coleoptera: Carabidae) – an interim report. The aim of this study was to improve current understanding of the distribution of carabid beetles in Switzerland. In 2016 and 2017, carabids were sampled by hand in 39 one-kilometer quadrats representing poorly or never-before investigated regions during two one-day field surveys each lasting seven hours. The objective was to find as many different species as possible. Most quadrats are located in the Swiss Plateau, a few in the Jura mountains, and five in the Alps. A total of 246 species were recorded, with between seven and 92 species per quadrat. Forty-five of these species are of particular interest for nature conservation and 34 are of national conservation priority. Agonum scitulum was recorded for the first time in the Alps and Sericoda quadripunctata was found for the first time in the Swiss Plateau. Agonum viridicupreum, Anisodactylus nemorivagus, Ophonus rufibarbis and Synuchus vivalis were more common than expected. The previously observed range expansion of Bembidion latinum and Nebria salina could be confirmed. Targeted searches at previous observation sites led to the rediscovery of Blethisa multipunctata and Anthracus consputus