Megachilid bees (Hymenoptera, Anthophila: Megachilidae) of the Central Russian Upland

New data are provided on 62 species from four tribes of megachilids in the Central Russian Upland. The findings of Stelis odontopyga, Heriades crenulata, Osmia brevicornis and Megachile pilicrus in the Kursk, Voronezh and Lipetsk provinces shift northeastward their known distribution boundaries. Megachile pyrenaea was previously recorded in Russia only from Leningrad Province and the Republic of Karelia. The second location of Anthidium oblongatum in the center of European Russia has been found. With an addition of the literature data, the total number of species known for the studied area is 70.