Literature
- Baldock, D., Wood, T., Cross, I., Smit, J. 2018. The Bees of Portugal (Hymenoptera: Apoidea: Anthophila) – Entomofauna Suppl. S22: 1–164.
- Nieto, A., Roberts, S.P.M., Kemp, J., Rasmont, P., Kuhlmann, M., García Criado, M., Biesmeijer, J.C., Bogusch, P., Dathe, H.H., De la Rúa, P., De Meulemeester, T., Dehon, M., Dewulf, A., Ortiz-Sánchez, F.J., Lhomme, P., Pauly, A., Potts, S.G., Praz, C., Quaranta, M., Radchenko, V.G., Scheuchl, E., Smit, J., Straka, J., Terzo, M., Tomozii, B., Window, J. and Michez, D. 2014. European Red List of bees. Luxembourg: Publication Office of the European Union.
- Ortiz-Sanchez, F.J., Ornosa, C. & Torres, F. 2012. Especies ibéricas de los géneros Lithurgus Berthold, 1827, Creightonella Cockerell, 1908 y Chalicodoma Lepeletier, 1841 (Hymenoptera, Megachilidae): claves de identificación y nuevos datos de distribución. Graellsia 68: 181-206.
- Stanisavljević, L. 2000. Idioekološka studija vrsta Osmia cornuta (Latr.) i O. rufa (L.) (Megachilidae, Hymenoptera) sa posebnim osvrtom na njihov status i značaj kao oprašivača biljaka. Doctoral dissertation [unpublished] Beograd.
- Weissmann JA, Picanço A, Borges PAV, Schaefer H 2017. Bees of the Azores: an annotated checklist (Apidae, Hymenoptera). ZooKeys 642: 63–95.