Eumenes gibbosus Nguyen, sp. nov.

Eumenes gibbosus Nguyen, sp. nov. (Figs 1 –6, 15) Material examined. HOLOTYPE, ♀, “ VIETNAM, Pa Co, Mai Chau, Hoa Binh, 1000 m, 23.VIII. 2005, L.T.P. Nguyen & J. Kojima [IEBR]. PARATYPES: VIETNAM: [IEBR] 1 ♀, same data as holotype; Ha Giang: 1 ♀, Ma Le, Dong Van, 23 ° 17 ' 9 "N 105 ° 18 ' 2 "E, 29.XI. 2014, LTP Nguyen, LX Truong, MP Nguyen & DD Nguyen; Yen Bai: 1 ♂, Van Chan, 21 ° 36 ' 10 "N 107 ° 30 ' 32 "E, DD Nguyen; [VNMN] Son La: 2 ♀, Co Ma, Thuan Chau, 2.VI. 2009 & 4.VI. 2009, PH Pham. Description. Female. Body length 10.5–11 mm (holotype: 10.5 mm); fore wing length 8.6–9.6 mm (holotype: 8.6 mm). Head in frontal view subcircular, 1.3 × as wide as high (Fig. 1). Distance from posterior ocelli to apical margin of vertex 0.9 × distance from posterior ocelli to inner eye margin. Gena much narrower than eye, in lateral view 0.4 × as wide as eye. Occipital carina complete, present clearly along entire length of gena. Inner eye margins strongly convergent ventrally; in frontal view 1.6 × as further apart from each other at vertex as clypeus. Clypeus in lateral view strongly convex at basal two-third, then straight to apical margin; in frontal view higher than wide, 1.1 × as high as wide (Fig. 1), with basal margin slightly convex medially and distinctly separated from antennal sockets; apical margin deeply emarginate medially, forming round tooth on each lateral side (Fig. 1); width of emargination about equal to 1 / 3 width of clypeus between inner eye margins. Mandible with prominent teeth, fourth tooth long and pointed apically. Antennal scape 3 × as long as its maximum width; F 1 2 × as long as wide, F 2–4 slightly longer than wide, F 5–9 wider than long, F 10 bullet-shaped, its length about equal to its basal width. Mesosoma longer than width in dorsal view. Pronotal carina slightly raised, reaching ventral corner of pronotum. Mesoscutum convex, slightly shorter than wide between tegulae; anterior margin broadly rounded. Disc of scutellum slightly convex. Metanotum angle, crenulated at edge ...