On the systematics and distribution of some poorly known species of Boletina (Diptera: Mycetophilidae) in northern Europe, with the description of a new species

A new Palaearctic species, Boletina palmata sp. nov., is described, and three other species, B. kurilensis Zaitzev, B. jamalensis Zaitzev and B. pinusia Maximova, are redescribed. It is demonstrated that many specimens from Fennoscandia formerly identified as B. kurilensis belong to B. palmata, while true B. kurilensis occurs only in northern parts of Murmansk Province in Russia, northern Norway and northern Finland. European specimens previously identified as B. jamalensis are proved to belong to B. pinusia, while another closely-related species, B. struthioides Polevoi et Hedmark, is found to be a junior synonym of B. jamalensis.