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 elanus sp. n. Materials Type status: Holotype . Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-29814-C07; catalogNumber: BC-ZSM-HYM-29814-C07 ; recordNumber: BC-ZSM-HYM-29814-C07; recordedBy: C. Hansson ; individualID: BC-ZSM-HYM-29814-C07; individualCount: 1 ; sex: female ; lifeStage: adult ; Taxon: scientificName: Tetrastichuselanus; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; taxonRemarks: Holotype deposited in MZLU; Location: country: Sweden ; decimalLatitude: 55.7078 ; decimalLongitude: 13.475 ; Record Level: type: PhysicalObject; language: en; institutionCode: MZLU ; basisOfRecord: PreservedSpecimen Description FEMALE holotype (Fig. 44 ). Body length 1.5 mm. Head . Width/length (dorsal view) 2.2, width/length (frontal view) 1.2, POL/OOL 1.6, widths head/mesosoma 1.1, mouth width/malar space 1.2, malar space/eye height 0.5. Antenna . Scape length/eye height 0.9, pedicel+flagellum length/mesosoma width 1.7, length/width F1, F2, F3 1.6, 1.8, 1.7, clava length/width 3.7, lengths pedicel/F1 0.6, lengths F1/F2 0.9, F1/F3 0.9, lengths F1, F2, F3/clava 0.4, 0.5, 0.5, widths F1/pedicel (dorsal view) 1.7, lengths antennal spicule/C3 0.3. Mesosoma . Length/width 1.4, mesoscutal mid-lobe length/width (width measured in anterior part) 0.9, mid-lobe with a median groove in posterior ⅔, with three adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 0.7, mesoscutellum length/width 0.8, length/width of enclosed space between submedian grooves 1.9, distance between SMG/distance between SMG and SLG 1.6, lengths dorsellum/propodeum (measured medially) 0.9, propodeum with strong reticulation, propodeal callus with two setae. Fore wing . Costal cell length/width 14.7, lengths costal cell/marginal vein 0.9, lengths marginal/stigmal veins 2.5. Gaster . Elongate, length/width 2.2, lengths gaster/mesosoma 1.6, Gt7 length/width 0.7, length of longest cercal seta/next longest seta 1.6, longest cercal seta slightly kinked in apical 1/4 , ovipositor sheaths projecting slightly beyond apex of Gt7. Colour. Head, mesoscutum and propodeum metallic bluish-green, mesoscutellum and gaster golden-green, entire antenna dark brown, tegulae black, wings hyaline with veins yellowish-brown, coxae and femora black with metallic tinges, trochanters dark brown, tibiae yellowish-brown, fore tarsus dark brown, mid and hind tarsi yellowish-white with T4 brown. MALE. Unknown. Diagnosis Antenna with F1 1.6 x as long and 1.7 x as wide as pedicel; mesoscutellum with distance between submedian grooves 1.6 x the distance between submedian and sublateral grooves and with enclosed area between submedian grooves 1.9 x as long as wide; female gaster elongate-acuminate, 2.2 x as long as wide, ovipositor sheaths reach beyond apex of Gt7. Distribution Sweden. Ecology Host Unknown. Notes Holotype deposited in MZLU.