Wahlberg, E., G. C. Baião, S. Häggqvist, S. Martinsson, D. Pistone, and T. Pape. “Ancistrocerus waldenii waldenii (Viereck 1906) (Hymenoptera: Vespidae, Eumeninae), a New Addition to the Fauna of Greenland”. Zootaxa, vol. 3838, no. 1, July 2014, pp. 143–150, doi:10.11646/zootaxa.3838.1.9.