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 heterus Graham, 1991 Tetrastichus heterus Graham 1991 :247-248. Holotype ♀ in NHM, examined (Fig. 68 ). Description See Graham (1991) . Diagnosis Antennal clava 0.8 x as long as F2+F3; gaster 2.3 x as long as wide, as long as head+mesosoma. Distribution Montenegro ( Graham 1991 ). Ecology Host Unknown. Material examined Type material: holotype ♀ (NHM, type no. 5.3619).