Literature
- Banaszak, J. and Dochkova, B. 2014. Bees (Hymenoptera, Apoidea, Apiformes) in the agricultural landscape of Bulgaria: species diversity Journal of Apicultural Science Vol. 58 No. 1 pp. 29-49.
- Pesenko, Yu. 2005. New data on the taxonomy and distribution of the Palaearctic halictids. Entomofauna Band 26, Heft 18: pp. 313-348.