Literature
- Baldock, D., Wood, T., Cross, I., Smit, J. 2018. The Bees of Portugal (Hymenoptera: Apoidea: Anthophila) – Entomofauna Suppl. S22: 1–164.
- Vereecken, N.J., Risch, S., & Cortis, P. in prep. - A contribution to the pollination biology of Ophrys scolopax Cavanilles (Orchidaceae) in southern France. .