Yemmatropis nigrovittatus Cai & Bu

Cai, Bo & Bu, Wenjun, 2011, A review of Yemmatropis (Hemiptera: Lygaeoidea: Berytidae), with descriptions of two new species from China, Zootaxa 2808, pp. 41-48 : 43-44

Yemmatropis nigrovittatus Cai & Bu , sp. nov.

( Figs. 1 E, F; 2D; 3D, H)

Diagnosis. Yemmatropis nigrovittatus sp. nov. can be distinguished from all other species in this genus by the black punctures on pronotum dorsally, the black apex of frons, the bands from antennal bases to suture of anterior lobe of head, and the area around ocelli ( Fig. 1 E). Furthermore, Y. nigrovittatus sp. nov. is distinguished from Y. dispar by the complete woolly band behind the eye, the black apical 1/4 of clypeus ( Fig. 2 D), and the bluntly projecting inner projection of paramere ( Fig. 3 H); from Y. erectus by the short, prostrate scutellar spine ( Fig. 1 E), the largely pale brown clypeus with only the apical 1/4 black ( Fig. 2 D), and the round apex of cuplike sclerite of male genital capsule ( Fig. 3D ), and the relatively slender blade of paramere ( Fig. 3 H); from Y. hsiaoi sp. nov. by the complete woolly band behind the eye ( Fig. 2 D), the round apex of lateral projection of male genital capsule ( Fig. 3D ), and the slightly projecting inner projection of paramere ( Fig. 3 H).

Description. Male (n = 12). Length 6.69–7.50 mm, width across hemelytra 0.88–0.98 mm. General coloration pale brown, with ventral surfaces of head and thorax black. Head ( Figs. 1 E, 2D): length 0.74–0.81 mm, width 0.57–0.59 mm; pale brown dorsally, except black on apex of frons, bands from antennal bases to suture of anterior lobe, and area around ocelli; black on ventral from midline of eye including lorum and apical 1/4 of clypeus, and dark brown on lateral of clypeus; black around base behind ocelli; bands of woolly setae extending from base of head to middle of eye around ventral margin of eye to lorum (covering most of lorum), from ocellus along suture of posterior lobe to connect lateral band, and across anterior margin of frons between antennal bases. Rostrum: length 2.28–2.53 mm, extending beyond metacoxae to abdominal segment II. Antenna: segment I, length 5.19–5.75 mm; II, 2.48–2.80 mm; III, 3.34–3.70 mm; IV, 1.00– 1.05 mm; segments I–III pale brown to dark brown, segment I with numerous fine, dark brown spots; segment IV fusiform, black, apical 1/5 pale yellow. Pronotum ( Figs. 1 E; 2D): length 1.14–1.24 mm, maximum width 0.75–0.85 mm; deeply and uniformly punctate except for impunctate calli; pale brown except for black punctures dorsally and shiny black quadrate area above and anterior to proacetabula. Scutellar spine ( Figs. 1 E, F): short, prostrate, length 0.18–0.21 mm. Hemelytron: dark brown, weakly tinged and streaked with darker brown. Ventral surface: abdomen pale brown except for shiny black, grooved segment II; largely glabrous except for narrow band of woolly setae along rostral groove and posterior and lateral margins of segment II; thoracic surface shiny black, with narrow bands of woolly setae bordering rostral groove and margins of pronotum. External scent efferent system ( Figs. 1 E, F): evaporatorium limited to metapleuron, dark gray, scent channel black; erect part of spout pale yellow. Legs: pale brown; femora with numerous dark brown spots, some coalescent to form larger spots; tibiae pale brown, with scattered, indistinct dark brown spots; tarsi dark brown, claws black. Femoral lengths: profemur 3.16–3.76 mm; mesofemur 3.60–4.24 mm; metafemur 5.66–6.16 mm. Tibial lengths: protibia 3.92–4.56 mm; mesotibia 4.48–5.12 mm; metatibia 7.38–8.19 mm. Opening of male genital capsule and paramere as shown in Fig. 3D , H.

Female (n = 15). Length 7.63–8.50 mm, width across hemelytra 0.93–1.05 mm. Head: length 0.88–0.93 mm, width 0.60–0.61 mm. Rostrum: length 2.62–2.72 mm. Antenna: segment I, length 5.20–5.76 mm; II, 2.44–2.72 mm; III, 3.36–3.64 mm; IV, 0.91–0.95 mm. Pronotum: length 1.29–1.40 mm, maximum width 0.83–0.93 mm. Scutellar spine: length 0.20–0.23 mm. Femoral lengths: profemur 3.16–3.72 mm; mesofemur 3.76–4.08 mm; metafemur 5.56–6.08 mm. Tibial lengths: protibia 3.90–4.25 mm; mesotibia 4.48–4.64 mm; metatibia 8.00– 8.13 mm. Similar to male in color and pubescence.

Etymology. The specific epithet nigrovittatus (Latin adjective, meaning black striated) is used to denote the black bands from antennal bases to suture of anterior lobe on the head.

Host plant. Unknown.

Distribution. China (Yunnan).

Type material. Holotype. male, China: Yunnan: Jinshan Lookout Tower (N24.63° –25.64°, E97.63° –97.62°), Tongbiguan, Yingjiang, Dehong, Yunnan, 19.v.2009. 1530– 1790 m, Bo Cai leg. Paratypes. China: Yunnan: 6 males, 8 females, ibid.; 4 males, 4 females, ibid., Min Li leg.; 1 female, Tongbiguan Township, Yingjiang, Dehong, Yunnan, 18.v. 2009. 1365 m, Min Li leg.; 8 males, 2 females, Sheyaojing, Wuliang Mountain, Nanjian, Dali, Yunnan, 6.xi.2001, 2200 m, Weibing Zhu leg.; 1 female, Nankang, Lujiang, Baoshan, Yunnan, 9.v.2009, 1900–2100 m, Bo Cai leg.; 1 female, Natural Park of Gaoligong Mountain, Lujiang, Baoshan, Yunnan, 10.v.2009, 2200 m, Bo Cai leg.; 1 female, Cangshan Mountain, Dali, Yunnan, 25.v.2009, 2225 m, Bo Cai leg.; 1 male, ibid., 18.vii.2006, 2200 m, Xueqin Shi leg.; 3 females, Tiantai Mountain (N25.40°, E98.71°), Shaba, Jietou, Baoshan, Yunnan, 12.v.2009, 1850 m, Bo Cai leg.; 1 female, Tiantai Mountain (N24.40° –25.40°, E98.71° –98.73°), Shaba, Jietou, Baoshan, Yunnan, 13.v.2009, 2005– 2279 m, Min Li leg.; 1 female, Dahaoping, Mangbang, Tengchong, Yunnan, 22.v.2009, 2060 m, Bo Cai leg.; 1 female, National Forest Park of Laifeng Mountain, Tengchong, Yunnan, 6.viii.2006, 1750 m, Cuiqing Gao leg.; 1 female, ibid., Pengzhi Dong leg.; 1 male, Zhengding, Tengchong, Yunnan, 3.x.2002, 1800– 2000m, Huaijun Xue leg.; 1 male, Yichang, Wenlong, Jingdong, Yunnan, 11.xi.2001, 1800– 200m, Weibing Zhu leg.; 4 females, Bangmai, Wenlong, Jingdong, Yunnan, 10.xi.2001, 1900 m, Weibing Zhu leg.; 2 females, Luoshuidong Village, Jingdong, Yunnan, 17.xi.2001, 1750– 1950 m, Weibing Zhu leg.

Figures

FIGURE 1. Photographs of head and thorax in dorsal view. (A) Yemmatropis dispar (Hsiao, 1974), female; (B) Y. erectus Henry, 2002, male; (C) Y. erectus Henry, 2002, male, showing the long erect scutellar spine. (D) Y. hsiaoi sp. nov., male; (E) Y. nigrovittatus sp. nov., male. (F) Y. nigrovittatus sp. nov., male, showing the short, reclining scutellar spine, which is similar to Y. dispar and Y. hsiaoi sp. nov. Each scale bar equals 1 mm.

FIGURE 2. Photographs of head and thorax in lateral view. (A) Yemmatropis dispar (Hsiao, 1974), female; (B) Y. erectus Henry, 2002, male; (C) Y. hsiaoi sp. nov., male; (D) Y. nigrovittatus sp. nov., male. Each scale bar equals 0.5 mm.

FIGURE 3. A – D: Opening of male genital capsule. (A) Yemmatropis dispar (Hsiao, 1974); (B) Y. erectus Henry, 2002; (C) Y. hsiaoi sp. nov.; (D) Y. nigrovittatus sp. nov.; pilosity omitted. E – H: Paramere. (E) Y. dispar (Hsiao, 1974); (F) Y. erectus Henry, 2002; (G). Y. hsiaoi sp. nov.; (H) Y. nigrovittatus sp. nov. Each scale bar equals 0.1 mm.