Review of the genus Nysius Dallas from Mongolian Plateau (Hemiptera: Heteroptera: Orsillidae) Author Ge, Xinyu Author Li, Junlan text Zootaxa 2019 2019-02-22 4560 1 171 183 journal article 27435 10.11646/zootaxa.4560.1.10 12915dc1-36ef-408d-8963-345f97add79a 1175-5326 2627326 4A6E2AD7-AE65-4383-8344-7F1BCC78CB2C Nysius eximius Stål, 1858 ( Fig. 2 ) Nysius eximius Stål, 1858 : 180 . Nysius eximius Nonnaizab, 1989 : 42 . Diagnosis : The body color is reddish brown. Nysius eximius is distinguished from other species by the scutellum with a dark brown carina, corium opaque and covered with many dark maculae, lateral corial margin conspicuously arched and basally with decumbent hairs. Inner projection of paramere truncate and laterally slightly concave ( Fig. 11 ). Pygophore ( Fig. 16 ), spermatheca ( Fig. 21 ) and ejaculatory reservoir ( Fig. 26 ) as shown in figures. Measurements. Male. (n=10): Total length: 4.70–5.60 (5.30); head length: 0.95–1.00 (0.97); head width: 1.10–1.30 (1.21); interocular space: 0.65–0.76 (0.71); Antennal segments:? 0.50–0.53 (0.51),? 0.94–0.99 (0.96),? 0.75–0.79 (0.78),? 0.72–0.77 (0.75); pronotum length: 0.87–1.20 (1.02); pronotum width: 1.50–1.85 (1.65); scutellum length: 0.68–0.78 (0.72); scutellum width: 0.80–0.93 (0.90); claval commissure length: 0.55–0.62 (0.59); abdomen length: 2.70–3.20 (3.01); abdominal width: 1.10–1.58 (1.39). Female. (n=10): Total length: 4.70–6.30 (5.80); head length: 0.99–1.10 (1.04); head width: 1.15–1.40 (1.28); interocular space: 0.68–0.78 (0.74); Antennal segments:? 0.50–0.54 (0.51),? 0.95–1.00 (0.97),? 0.75–0.80 (0.78),? 0.73–0.77 (0.76); pronotum length: 0.95–1.30 (1.13); pronotum width: 1.70–1.90 (1.81); scutellum length: 0.70– 0.80 (0.75); scutellum width: 0.83–0.95 (0.92); claval commissure length: 0.57–0.65 (0.61); abdomen length: 2.85– 3.80 (3.29); abdominal width: 1.50–2.50 (1.98). FIGURES 1–5 . Adult dorsal habitus: Fig. 1, N. ericae ericae ; Fig. 2, N. eximius ; Fig. 3, N. helveticus ; Fig. 4, N. senecionis ; Fig. 5, N. thymi thymi . (scale bar = 1.0mm). FIGURES 6–9. The diverse shape of buccula and rostrum of N. ericae ericae (scale bar = 0.10mm). Material examined. INNER MONGOLIA : Xilingol League : Zhengxiangbaiqi , 1♂ , 30-VII-1987 , Nonnaizab ; Dongwuzhumuqinqi , 7♀♀ , 28-VII-1980 , Nonnaizab ; Xiwuzhumuqinqi , 2♀♀ , 24-VII-2006 , Nonnaizab. Chifeng City : Balinyouqi , Hanshan forest , 1♀ , 28-VI-2017 , Ge Xinyu. Hinggan League : Aershan City , 2♂♂ , 16-VII-1982 , Nonnaizab ; Aershan City , Yiershi Town , 1♀ 2♂♂ , 30-VI-1985 , Nonnaizab ; keerqinyouyiqianqi, 1♀ , 27-VII-1989 , Nonnaizab. Hulunbuir City : Ewenkezizhiqi , 4♀♀ , 22-VII-1980 , Nonnaizab ; Ewenkezizhiqi , 5♀♀ , 26-VII-1988 , Nonnaizab. MONGOLIA : Arkhangai aimag: Tuvshruulekh , 1♀ , 5-VII-1972 . Slenge aimag: Shaamar , 1♀ , 6-VII- 1982 . Khentii aimag: Norovlin sum, 4♀♀ 3♂♂ , 2-VII-1976 . Distribution. Inner Mongolia , China : Xilingol League ( Zhengxiangbaiqi , Dongwuzhumuqinqi, Xiwuzhumuqinqi ), Chifeng City : ( Balinyouqi ) Hinggan League (Aershan city, keerqinyouyiqianqi), Hulunbuir City (Ewenkezizhiqi, Elunchunzizhiqi); Mongolia : Dzavhan , Khuvsgul, Bulgan , Tuv , Khentii , Dornod , Govi-Altai , Umugovi, Slenge, Arkhangai ; Elsewhere: Korea , Russia .