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An updated checklist of the Swiss species belonging to the superfamily Scarabaeoidea is presented and briefly discussed. A total of 173 species belonging to the families Geotrupidae, Glaphyridae, Lucanidae, Ochodaeidae, Scarabaeidae and Trogidae is confirmed for Switzerland. This species list is based on 73’358 occurrences obtained from the identification of specimens held in museums and private collections and from the literature.

Abstract: Addendum to the Hydrophiloidea species checklist of Switzerland: Helophorus nanus Sturm, 1836 (Coleoptera: Helophoridae). − Helophorus nanus Sturm, 1836 was not included on the 2023 checklist of the Hydrophiloidea of Switzerland. Although this species was mentioned for Switzerland in the past, historical literature citations were not supported by specimens in collections. In this note, we present proof of its presence in Switzerland based on specimens collected in 2023 in the canton of Schaffhausen.

Abstract: Aeletes atomarius (Aubé, 1842) (Coleoptera, Histeridae), a new species for the Swiss fauna. − Surveys carried out in 2022 and 2023 in the north and west of Switzerland resulted in the capture of several specimens of Aeletes atomarius, a discreet micro-Histeridae that was not considered indigenous to Switzerland until now. Histeridae are currently represented by 79 species in Switzerland.

Abstract: Improved understanding of lampyrid beetles in Switzerland and observation of Luciola lusitanica Charpentier, 1825 in Geneva (Coleoptera, Lampyridae). – Five species of Lampyridae are present in Switzerland. While Lampyris noctiluca, Lamprohiza splendidula, Phosphaenus hemipterus and Luciola italica have long been known, the presence of Luciola lusitanica is confirmed here for the first time.

Abstract: About some rare or new beetles species for Switzerland. − Seventeen rare species of Coleoptera were recently collected in Switzerland. These species are presented and briefly discussed. Cryptophilus obliteratus (Erotylidae), Dorcatoma minor (Ptinidae), Ernobius mulsanti (Ptinidae) and Xylophilus corticalis (Eucnemidae) are noted for the first time in Switzerland.

Abstract: Omalisus victoris Mulsant, 1852, Pseudanostirus globicollis (Germar, 1843) (Elateridae) and Phytobaenus amabilis R. F. Sahlberg, 1834 (Aderidae), three new or confirmed beetles for Switzerland. − Between 2019 and 2021, Omalisus victoris and Phytobaenus amabilis were discovered in Valais and Ticino and are new to the Swiss fauna. A recent observation of Pseudanostirus globicollis confirms its status as indigenous to Switzerland.

Abstract: Ampedus tristis (Linnaeus, 1758), an emblematic forest-dwelling species new to Swiss fauna (Coleoptera, Elateridae). - Two individuals of Ampedus tristis were collected in the Valais and in Lower Engadine, one in 2013 and one in 2015, using interception traps placed in coniferous forests. These captures represent the first two valid occurrences of this species in Switzerland. This species, which is very rare and exhibits a patchy distribution in central Europe, is considered a relict of primeval forests. A.

A list of the Swiss Cerophytidae. Elateridae. Eucnemidae and Throscidae is presented with some annotations. The work is based on the identification of specimens from museums and private collections by the authors and several European specialists. One species of Cerophytidae, 152 Elateridae, 15 Eucnemidae and 8 Throscidae are recorded from Switzerland. For all species the synonymy used in the Swiss literature is provided. Forty-three species (37 Elateridae, 3 Eucnemidae and 3 Throscidae) are recorded as doubtful and listed separately.

Key Words: Insecta, beetle, ladybird, species list, new country records, faunistics, distribution

Keywords: species list, Switzerland, faunistics, distribution