Literature
- Ascher, J.S. and Pickering, J. 2014. Discover Life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila): http://www.discoverlife.org/mp/20q?guide=Apoidea_species.
- Müller A, Trunz V. 2014. Palaearctic osmiine bees of the genera Hofferia and Stenoheriades (Megachilidae, Osmiini): biology, taxonomy and key to species. Zootaxa. 365:175–186.
- Müller A. 2016. Palaearctic Osmiine Bees. ETH Zürich. [cited 2016 Dec 20]. Available from: http://blogs.ethz.ch/osmiini.
- Rasmont, P., Devalez, J., Pauly, A., Michez, D. & Radchenko, V.G. 2017. Addition to the checklist of IUCN European wild bees (Hymenoptera: Apoidea), Annales de la Société entomologique de France (N..), 53:1, 17-32, DOI: 10.1080/00379271.2017.1307696.