In this paper, the data on fauna of Nevermanniini and Wilhelmiini tribes (Diptera: Simuliidae) were analyzed. All the accessible literature sources, institute collections and new materials recently collected in Yakutia were examined. Regional fauna was supplemented by two species: Schoenbaueria dendrofila (Patrusheva, 1962) and S. furculata Shewell, 1952, the latter being new for the Russian fauna also. The distribution of five more species from Simuliidae family was clarified. Processing of the collected material proved that 10 species previously registered in Yakutia can still be found in the region.