Recent noteworthy findings of fungus gnats from Finland and northwestern Russia (Diptera: Ditomyiidae, Keroplatidae, Bolitophilidae and Mycetophilidae).

New faunistic data on fungus gnats (Diptera: Sciaroidea excluding Sciaridae) from Finland and NW Russia (Karelia and Murmansk Region) are presented. A total of 64 and 34 species are reported for the first time form Finland and Russian Karelia, respectively. Nine of the species are also new for the European fauna: Mycomyashewelli Väisänen, 1984, Mycomyathula Väisänen, 1984, Acnemiatrifida Zaitzev, 1982, Coelosiagracilis Johannsen, 1912, Orfeliakrivosheinae Zaitzev, 1994, Mycetophilabiformis Maximova, 2002, Mycetophilamonstera Maximova, 2002, Mycetophilauschaica Subbotina & Maximova, 2011 and Trichontapalustris Maximova, 2002.