Nysius eximius Stål, 1858

Ge, Xinyu & Li, Junlan, 2019, Review of the genus Nysius Dallas from Mongolian Plateau (Hemiptera: Heteroptera: Orsillidae), Zootaxa 4560 (1), pp. 171-183 : 173-175

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).

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.

Figures

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 10–19. Figs. 10–14. Right Parameres: Fig. 10, N. ericae ericae; Fig. 11, N. eximius; Fig. 12, N. helveticus; Fig. 13, N. senecionis; Fig. 14, N. thymi thymi; Figs. 15–19. Pygophore: Fig.15, N. ericae ericae; Fig. 16, N. eximius; Fig. 17, N. helveticus; Fig. 18, N. senecionis; Fig. 19, N. thymi thymi. (scale bar = 0.10mm).

FIGURES 20–30. Figs. 20–24. Spermatheca: Fig. 20, N. ericae ericae; Fig. 21, N. eximius; Fig. 22, N. helveticus; Fig. 23, N. senecionis; Fig. 24, N. thymi thymi; Figs. 25–28,30. Ejaculatory reservoir and duct: Fig. 25, N. ericae ericae; Fig. 26, N. eximius; Fig. 27, N. helveticus; Fig. 28, N. senecionis; Fig. 29, N. senecionis ejaculatory reservoir; Fig.30, N. thymi thymi. (scale bar = 0.10mm).