[in Russian with English abstract: ] Five species (Biatoridium monasteriense, Lepraria elobata, L. vouauxii, Muellerella hospitans, Ochrolechia parella) are reported as new to the lichen biota of Dagestan. The genus Biatoridium and species Muellerella hospitans were not previously known in the East Caucasus. Information on the distribution of each species in the Caucasus and Russia with data on localities and some comments is given. Keywords: lichens, lichenicolous fungi, floristic records, East Caucasus, Russia