Three New Species of Boletina Staeger Fungus Gnats with Notes on the Nearctic Members of the Boletina nitida Grzegorzek Species Group

摘要

Three new species of Boletina Staeger fungus gnats were discovered during the first collection season in a forest of jack pine (Pinus banksiana Lambert) and white pine (Pinus strobus L.) in the western Lower Peninsula of Michigan. None was observed during almost 10 years of trapping in a nearby swamp dominated by deciduous rather than evergreen trees despite separation of the habitats by less than 1 km. Boletina peninsula Taber belongs to the Boletina nitida Grzegorzek species group. The closest relatives of Boletina autumna Taber and Boletina ursa Taber have not been determined.