Reference

N. N. Blagoveshchenskaya (1995): Comments on the catalogue of bees (Hymenoptera, Apoi-dea) [of Ulyanovsk province]; [Ru; 11 refs. Date: 20.III.1995]. – In: ISAYEV, A. Yu. (ed.). Insects of Ulyanovsk Province. [A Collection of Scientific Papers]. No. 2. (In Series: Nature of Ulyanovsk Province, no. 6). Ulyanovsk (Ulyanovsk Branch of the Moscow State University) – : 92 - 101.