Hylaeus (Prosopis) variegatus (FABRICIUS, 1798)
- 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.
- Banaszak, J. and Dochkova, B. 2014. Bees (Hymenoptera, Apoidea, Apiformes) in the agricultural landscape of Bulgaria: species diversity Journal of Apicultural Science Vol. 58 No. 1 pp. 29-49.
- Filatov, M.A., Ivanov, S.P., Budashkin, Y.I. 2006. .
- Peeters, T.M.J., I.P. Raemakers & J. Smit 1999. Voorlopige atlas van de Nederlandse bijen (Apidae). European Invertebrate Survey Nederland, Leiden, 230 pp.
- Schwarz, M., F. Gusenleitner, P. Westrich & H. Dathe 1996. Katalog der Bienen Österreichs, Deutschlands und der Schweiz (Hymenoptera, Apidae). Entomofauna Suppl. 8: 1-398.
- Tomozei, B. 2008. Checklist of Bees of the genera Colletes Latreille 1930 and Hylaeus Fabricius 1793 of Romania (Hymenoptera: Apiformes: Colletidae) Faunistic Entomology – Entomologie faunistique 2008 61 (3), 87-97.
- Westrich, P. 1989. Die Wildbienen Baden-Württembergs. Verlag Eugen Ulmer, Stuttgart, Allgemeiner Teil, pp.1-431; Spezieller Teil, pp.432-972.