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 setifer Thomson, 1878 Tetrastichus setifer Thomson 1878 :283. Lectotype ♀ in MZLU, designated by Graham 1961 :39, examined (Fig. 88 ). Transferred to Aprostocetus by Graham 1961 :39 and back to Tetrastichus by Domenichini 1966 :91. Description Female see Graham (1991) . MALE. Body length 1.9 mm. Head . Width/length in dorsal view 2.6, width/length in frontal view 1.3, eye height/malar space 1.2, mouth width/malar space 1.6, widths head/mesosoma 1.0. Antenna . F1-F4 with basal whorls of setae, reaching to but not beyond apex of corresponding flagellomere, scape length/eye height 1.1, scape length/width 3.0, ventral plaque placed in central part of scape, lengths ventral plaque/scape 0.8, pedicel+flagellum length/mesosoma width 1.4, length/width F1, F2, F3, F4 1.5, 1.7, 1.8,1.6, clava length/width 4.5, lengths pedicel/F1 0.9, lengths F1/F2 0.9, F1/F3 0.9, F1/F4 1.0, lengths F1, F2, F3, F4/clava 0.4, 0.4, 0.4, 0.4. Colour. Body with metallic blue tinges, entire antenna dark brown, tegulae dark brown, wing venation pale brown, coxae concolorous with body, trochanters and femora dark brown, tibiae yellowish-brown, tarsi yellowish-brown with T4 brown. Diagnosis Ovipositor retracted and does not reach apex of Gt7; cerci placed laterally; colour dull compared to other species in this group; spine of antennal claval long, 0.5 x C3; mouth opening 1.3-1.4 x malar space. Distribution (Former) Czechoslovakia, France, (former) Yugoslavia ( Graham 1991 ) and Sweden ( Thomson 1878 ). Ecology Host Lilioceris lilii (Scopoli) ( Gold et al. 2001 ) and L. tibialis (Villa) ( Kenis et al. 2002 ) ( Coleoptera : Chrysomelidae ). Material examined Type material: lectotype ♀ of T. setifer (MZLU, type no. 4868:1). Additional material (27♀ 5♂): France 2♀ (GD); Sweden 25♀ 5♂ ex Lilioceris lilii (MZLU, NHM).