A revision of European species of the genus Tetrastichus Haliday (Hymenoptera: Eulophidae) using integrative taxonomy Author Hansson, Christer The Natural History Museum, London, United Kingdom & Biological Museum (Entomology), Lund University, Lund, Sweden christerdennis@gmail.com Author Schmidt, Stefan https://orcid.org/0000-0001-5751-8706 SNSB-Zoologische Staatssammlung Muenchen, Munich, Germany schmidt.s@snsb.de text Biodiversity Data Journal 2020 2020-12-16 8 59177 59177 http://dx.doi.org/10.3897/BDJ.8.e59177 journal article http://dx.doi.org/10.3897/BDJ.8.e59177 1314-2828-8-e59177 AD70B3AB67634D2885F290988225C5C8 2BC7CCC36D765F1C87ACBE8025DFD848 Tetrastichus telon (Graham, 1961) Tetrastichus telon Aprostocetus Tetrastichus telon Graham 1961 92 Tetrastichus Domenichini 1966 Description See Graham (1991) , Graham (1961) . Diagnosis Female gaster very long, 2.9-5.0 x as long as wide with Gt7 1.6-2.5 x as long as wide. The only other species with this long gaster is T. legionarius , that differs from T. telon in having the body bright metallic bluish-green to green, antennal scape longer than eye and a longer flagellum, about 2.8 x the length of scape (about 2.6 x in T. telon ) and F1 about 4 x as long as wide (about 2.8 x in T. telon ). Distribution (Former) Czechoslovakia, France, United Kingdom ( Graham 1991 ), Germany, Italy ( Domenichini 1966 ) and Sweden ( Hedqvist 2003 ). Ecology Host Agrilus viridis L. ( Coleoptera : Buprestidae ) ( Domenichini 1966 ). Material examined Type material: holotype ♀ of A. Tetrastichus telon (OUMNH). Additional material (10♀): France 1♀ (NHM), Sweden 2♀ (MZLU, NHM), United Kingdom 7♀ (NHM).