Literature
- Baldock, D., Livory, A, Owens, N. 2019. Lists of the wasps and bees of the Balearic Islands, Spain (Hymenoptera: Chrysidoidea, Scolioidea, Vespoidea, Apoidea) with a Discussion of Aculeate Diversity and Endemism in Mediterranean and Atlantic Archipelagos. in prep.
- Baldock, D., Wood, T., Cross, I., Smit, J. 2018. The Bees of Portugal (Hymenoptera: Apoidea: Anthophila) – Entomofauna Suppl. S22: 1–164.
- Balzan, M.V., Rasmont, P., Kuhlmann, M., Dathe, H., Pauly, A., Patiny, S., Terzo, M. and Michez, D. 2016. The bees (Hymenoptera: Apoidea) of the Maltese Islands. Zootaxa, 4162(2), pp.225-244.
- Müller, A. 2011. Palaearctic Osmiine Bees, ETH Zürich, http://blogs.ethz.ch/osmiini.