Revision of Palaearctic Idiotypa (Hymenoptera, Diapriidae, Diapriinae, Spilomicrini) Author Chemyreva, Vasilisa G. Zoological Institute, Russian Academy of Sciences, 1 Universitetskaya Emb., St Petersburg 199034, Russia. diapriidas. vas @ gmail. com Author Notton, David G. National Museum of Scotland, National Museums Collection Centre, 242 West Granton Road, Granton, Edinburgh, EH 5 1 JA, Scotland. Author Zaldívar-Riverón, Alejandro Colección Nacional de Insectos, Instituto de Biología, Universidad Nacional Autónoma de México, 3 er. circuito exterior s / n, Cd. Cd. Universitaria, Copilco, Coyoacán, Mexico. text Zootaxa 2021 2021-05-03 4966 2 127 144 journal article 6534 10.11646/zootaxa.4966.2.2 398b786d-e80a-4918-89f9-905e1fa00872 1175-5326 4736399 E76C6888-D01D-463B-8E30-951816A99296 Idiotypa nitens ( Szabó, 1961 ) comb. n. ( Figs 14–28 ) Eunuchopria nitens Szabó, 1961: 491 . Eunuchopria nitens : Kozlov, 1978: 607 . Redescription. Male ( Holotype ). Body length 1.2 mm; antenna length1.1 mm. Colour. Whole body yellowish brown. FIGURES 16‒21 . Idiotypa nitens ( Szabó, 1961 ) , female: 16) head, mesosoma and base of metasoma in dorsal view (scale bar = 0.2 mm); 17) head, mesosoma and base of metasoma in lateral view; 18) S2 (scale bar = 0.2 mm); 19) face (scale bar = 0.2 mm); 20) whole insect in lateral view (scale bar = 0.5 mm); 21) antenna, ventral view (scale bar = 0.2 mm). FIGURES 22‒23 . Idiotypa nitens ( Szabó, 1961 ) , male. Author Yakov Salaviz. Head in lateral view 1.13 times as high as long, in dorsal view weakly transverse, 1.10 times as wide as long, wider than mesosoma, covered with long scattered setae. Ocelli absent. Occipital flange very narrow, smooth. Face smooth, with scattered long setae. Tentorial pits distinct and large. Malar sulcus absent. Malar space 1.4 times as high as diameter of eye. Clypeus semi-circular, bare and smooth, weakly convex, epistomal sulcus indistinct. Pleurostoma distance 0.63 times as wide as width of head. Mandible with two equal teeth. Eye round, pubescent. Antennal shelf in frontal view smooth, with depression between toruli on frontal surface. Antennae 13-segmented. Scape cylindrical, slightly curved, with apical rim simple. Ratios of length to width of antennomeres in dorsal view: A1 24:6; A2 10:5; A3 10:5; A4 12:7; A5 9:6; A6 9:6; A7 9:6; A8 9:6; A9 8:6; A10 8:6; A11 9:6; A12 9:6; А13 15:6. Mesosoma in lateral view 1.50 times as long as high, in dorsal view as 1.68 times as long as wide. Pronotum large, smooth and pubescent, with pronotal shoulders weakly projecting. Mesopleuron smooth, without sternaulus, mesepimeral sulcus and epicnemial bridge; covered with scattered setae; epicnemial pit deep and pubescent. Mesoscutum subtriangular, 1.88 times as wide as long, covered with scattered erect setae. Notauli and humeral sulci absent. Wings and tegula absent. Transscutal articulation between mesoscutum and scutellum absent. Scutellum narrow and transverse, anteriorly with transcutal line (scutoscutellar sulcus), without axilla and axillar depression. Lateral and posterior scutellar pits absent. Metascutellum narrow, with long scattered setae and irregular sculpture. Propodeum in dorsal view transverse, twice as wide as long, entirely pubescent and covered with rugulose sculpture. Median and lateral keels of propodeum absent. Nuchal area sculptured, with pilosity. Metasoma. Petiole transverse, 1.38 times as wide as long, cylindrical, entirely pubescent, covered with rugulose sculpture. Base of T2 pubescent, with deep median and lateral notches; area between the notches smooth; posteriorly T2 smooth and covered with scattered setae; T3‒T7 smooth, with few erect setae. S2 with lateral fold at base and smooth posteriorly; covered with scattered long setae more dense at base of S2 and two S2 setal lines. Female. Body length 1.3–1.7 mm; antenna length 0.7‒1.0 mm. Similar to male, but differs mainly in antennal structures. Antenna 12-segmented, with abrupt 4-segmented clava, А1‒А8 yellowish brown to dark red, А9–А12 dark brown. Scape cylindrical, slightly curved, with two small projecting lamellae apically. A9‒A12 flattened on ventral side with well-defined MGS brush; in lateral view connection between A8‒A12 situated dorsally. Ratios of length to width of antennomeres in dorsal view: A1 37:10; A2 11:8; A3 9:7; A4 6:7.5; A5 6:7.5; A6 5:8; A7 4:8.5; A8 4:10; A9 9:15; A10 10:16; A11 10:16; A12 18:16.