Checklist of British and Irish Hymenoptera - aculeates (Apoidea, Chrysidoidea and Vespoidea) Author Else, George R. Author Bolton, Barry Author Broad, Gavin R. text Biodiversity Data Journal 2016 4 8050 8050 http://dx.doi.org/10.3897/BDJ.4.e8050 journal article http://dx.doi.org/10.3897/BDJ.4.e8050 1314-2828-4-8050 Psenulus schencki (Tournier, 1889) Psen schencki Tournier, 1889 simplex (Tournier, 1899, Psen ) longulus (Tournier, 1899, Psen ) Distribution England