Literature

• GBIF. Global Biodiversity Information Facility. www.gbif.org. [link]

Literature references linked to higher taxa

• Catalogue of Life. Species 2000 & ITIS. [link] (Eumenidae)
• Encyclopedia of Life. [link] (Hymenoptera)
• Various contributors 2017. Hymenoptera Online (HOL) [accessed 8 March 2017]. [link] (Aculeata)