Additions to the species list of the free-living ants (Hymenoptera: Formicidae) in Switzerland.
Three new species (Lasius neglectus, Lasius reginae, Temnolhorax "lichtensteini sp. 2") are added to the checklist of Swiss ants (Neumeyer & Seifert 2005), while another (Temnothorax lichtensteini) is eliminated. The presence of three further species (Messor structor, Tetramorium impurum, Tetramorium kutteri) is confirmed. Mutations and confirmations are broadly discussed.