Megachile (Eutricharaea) pusilla Pérez, 1884
- 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.
- Baldock, D., Wood, T., Cross, I., Smit, J. 2018. The Bees of Portugal (Hymenoptera: Apoidea: Anthophila) – Entomofauna Suppl. S22: 1–164.
- Balzan, M., Genoud, D., Rasmont, P., Schwarz, M., & Michez, D. 2017. New records of bees Hymenoptera: Apoidea) from the Maltese Islands. Journal of Melittology No. 72, pp. 1–9.
- Dewulf, A. & Praz, C. 2014. Megachile pusilla. The IUCN Red List of Threatened Species 2014: e.T19199142A50142166. http://dx.doi.org/10.2305/IUCN.UK.2014-3.RLTS.T19199142A50142166.en. Downloaded on 19 October 2017.
- 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.
- Soltani G, Bénon D, Alvarez N, Praz C 2017. When different contact zones tell different stories: putative ring species in the Megachile concinna complex (Hymenoptera, Megachilidae). Biological Journal of the Linnean Society Vol. 121, Issue 4, pp 815–832.