Annotated checklist of the Byrrhoidea and Dryopoidea of Switzerland (Coleoptera)

On the basis of more than 14,000 occurrences obtained from specimens held in museums and private collections, as well as from literature data, we present the first updated checklist of the Swiss species of Byrrhoidea (Byrrhidae) and Dryopoidea (Dryopidae, Elmidae, Heteroceridae, Limnichidae, Psephenidae, and Ptilodactylidae) since 1900. In total, 78 species are retained as part of the Swiss fauna, while 10 species, which were recorded from Switzerland in the past, are excluded from this list. These exclusions are either due to insufficient documentation, because their records were based on misidentified material, or because they represent isolated cases of introductions of a non-indigenous species. Curimopsis monticola (Franz, 1967), Dryops subincanus (Kuwert, 1890) and Pedilophorus auratus (Duftschmid, 1825) are recorded for the first time in Switzerland. This work is a further step towards the comprehension of the whole Swiss beetle fauna.