Pemphredon lugubris (Fabricius) (Crabronidae) approaching nest with aphid prey (courtesy of J. Early)  
  Part of: Else G, Bolton B, Broad G (2016) Checklist of British and Irish Hymenoptera - aculeates (Apoidea, Chrysidoidea and Vespoidea). Biodiversity Data Journal 4: e8050. https://doi.org/10.3897/BDJ.4.e8050