Checklist of British and Irish Hymenoptera - Ichneumonidae Author Broad, Gavin R. text Biodiversity Data Journal 2016 4 9042 9042 http://dx.doi.org/10.3897/BDJ.4.e9042 journal article http://dx.doi.org/10.3897/BDJ.4.e9042 1314-2828-4-9042 Diplazon tetragonus (Thunberg, 1824) Ichneumon tetragonus Thunberg, 1824 hortorius (Thunberg, 1824, Ichneumon ) ustorius (Thunberg, 1824, Ichneumon ) tricinctus (Gravenhorst, 1829, Bassus ) nemoralis (Holmgren, 1858, Bassus ) Distribution England, Scotland, Wales, Ireland, Isle of Man