Osmia (Hoplosmia) padri (Tkalců, 1974)
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- 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.
- Tkalcu, B. 1974a. Revision und Klassifikation der bisher zur Untergattung Hoplosmia Thomson gestellten Anthocopa-Arten (Hymenoptera, Apoidea, Megachilidae). Acta Entomologica Bohemoslovaca (Praha) 71: 114-135.