Bionomics of Leptochilus regulus (de Saussure, 1855) 1 female arriving with a portion of the building material 2, 3 female arriving with a prey item 4 female inspecting a willow stem while searching a place for a new nest 5 male perching in front of the nest 6 female of Chrysis ragusae De Stefani, 1888 waiting at the nest site.

  Part of: Fateryga AV, Fateryga VV (2021) A further study of the nesting biology of Leptochilus (Neoleptochilus) regulus (de Saussure, 1855) (Hymenoptera, Vespidae, Eumeninae). In: Proshchalykin MYu, Gokhman VE (Eds) Hymenoptera studies through space and time: A collection of papers dedicated to the 75th anniversary of Arkady S. Lelej. Journal of Hymenoptera Research 84: 75-86.