Literature

• Stephen P. Bush, Hannah Madden 2013. Preliminary checklist of the bees of St. Eustatius, Lesser Antilles (Hymenoptera: Apoidea Anthophila). Insecta Mundi 298: 1-3.
• Various contributors 2017. Hymenoptera Online (HOL) [accessed 8 March 2017]. [link]

Literature references linked to higher taxa

• Encyclopedia of Life. [link] (Hymenoptera)
• 2016. Integrated Taxonomic Information System on-line database. [link] (Centris)
• Maddison, D. (ed.). Tree of Life web project. [link] (Apoidea)