Pararrhynchium striatum Nguyen, sp. nov.

Pararrhynchium striatum Nguyen, sp. nov. (Figs 1–8) Material examined. HOLOTYPE, ♀ [IEBR], “ VIETNAM, Lac Thinh, Yen Thuy, Hoa Binh, 22 ° 14 'N, 106 °05'E, 2.v. 2002, Hoang Vu Tru”. PARATYPES: VIETNAM: [IEBR] 1 ♂, Phuc Xuyen, Dai Tu, Thai Nguyen, 23.iv. 2012, Long D. Khuat; 1 ♀, Son Kim, Huong Son, Ha Tinh, 6.v. 2004, Lam X. Truong; 1 ♀, Son Tho, Vu Quang, Ha Tinh, 24.v. 2008, Insect Systematic Department collectors; 2 ♀, Bac Vang ranger station, Na Hang NR, Na Hang, Tuyen Quang, 20 ° 20 ' 53 "N 105 ° 25 ' 49 "E, 121 m, 10.vi. 2015, L.T.P. Nguyen, D.D. Nguyen & L.X. Truong; [VNMN] 4 ♀, Bac Vang ranger station, Na Hang NR, Na Hang, Tuyen Quang, 20 ° 20 ' 53 "N 105 ° 25 ' 49 "E, 121 m, 10.vi. 2015, L.T.P. Nguyen, D.D. Nguyen & L.X. Truong. Diagnosis. A new species can be distinguished from all other congeners by following combination of characters: frontal face of pronotum with dense small punctures along pronotal carina; clypeus in frontal view much wider than high, about 1.2 × as wide as high; horizontal area of propodeum as long as metanotum, posterior surface of propodeum with oblique striations along its height, upper half of median carina of propodeum with several transverse striae; T 1 with partial transverse carina at base which visible at lateral sides. Description. Female. Body length 10–11.8 mm (holotype: 11.2 mm); fore wing length 8.8–10.2 mm (holotype: 9.8 mm). Head in frontal view nearly circular, about as wide as high (Fig. 1). Vertex (Fig. 3) strongly produce behind eye, with cephalic foveae small, bearing dense pubescence, situated close to each other with distance between foveae about half diameter of front ocellus; depression for cephalic foveae obsolete. Frontal face of pronotum with dense small punctures along pronotal carina, punctures larger and denser at lateral sides. Distance from posterior ocelli to apical margin of vertex slightly greater than 2 × distance from posterior ocelli to inner eye margin (Fig. 3). Gena narrower than eye, strongly depress near occipital carina, in ...