Cornutorogas hatinhensis Long & van Achterberg, spec. nov.
Material.— Holotype, ♂ (IEBR), “Dory. 367, Vietnam: Ha Tinh (Huong Son), 1250 m, forest, 14.v.1998, K. D. Long”. Paratype: 1 ♂ (RMNH), “S. Vietnam: Dak Lak, Chu Yang Sin N.P., n[ea]r dam, 740-940 m, 1-10.vi.2007, Mal. traps, C. v. Achterberg & R. de Vries, RMNH’07”.
Holotype, ♂, length of body 3.2 mm, length of fore wing 3.3 mm.
Head.— Antenna with 49 segments, third segment 1.3 times as long as fourth segment, penultimate segment 0.6 times as long as apical segment; in lateral view scapus longer dorsally than ventrally (7:4); scapus 1.75 times longer than apically high; occipital carina strongly developed (fig. 18); eyes glabrous, emarginate; width of face equal to height of face and clypeus combined; distance between antennal sockets 0.75 times diameter of antennal socket; eye 1.9 times as long as wide; in lateral view eye 3 times as long as width of temple; POL:Od:OOL = 3:2:3 (fig. 18); face, vertex, temple and occiput shiny and smooth.
Mesosoma.— Length of mesosoma 1.45 times (without propodeal horn) its height; pronope shallow; pronotum small in dorsal view and in dorsal-lateral view hardly convex medio-posteriorly (figs 19, 20); precoxal sulcus rather deep with carinae (fig. 21); mesopleuron with dense fine punctures dorsally, and highly polished ventrally; metapleuron with sparse fine punctures; mesoscutum shiny and with sparse setae; notauli wide, deep and strongly carinate; median lobe of mesoscutum with apical carinate groove; scutellum smooth as apical part of mesoscutum; propodeum irregularly rugose-areolate with a very short carina basally; lateral horn of propodeum 0.7 times as long as long as first metasomal tergite.
Wings.— Fore wing: pterostigma 5.4 times as long as wide; length of veins r:2-SR:3-SR:SR1 = 5:11:10:34; vein r arising just before middle of pterostigma; second submarginal cell 1.4 times as long as its basal width and 1.75 times as long as its apical width; length of veins 1-CU1:cu-a:2-CU1:3-CU1 = 4:5:19:4. Hind wing: M+CU:1-M:1r-m = 20:22:7.
Legs.— Hind coxa more or less punctate; length of fore femur:tibia:tarsus:basitarsus = 30:34:34:13; length of hind femur:tibia:tarsus:basitarsus = 47:55:54:24; inner hind tibial spur about 0.3 times as long as basitarsus (7:24).
Metasoma.— Length of first tergite 1.1 times as long as its apical width, its surface very coarsely longitudinally rugose-striate; dorsal carina complete; medio-basal triangular area rather large, dorsal carina complete and ending at apex; medially second tergite 1.5 times as long as third tergite; third and fourth tergites coarsely longitudinally rugose-striate, between apical striae punctate; fifth tergite rugose-striate and mixed with punctures (fig. 22).
Colour.— Brown; head, mesoscutum dorsally, propodeum and all tergites dark brown; pronotum, fore and middle legs, mesopleuron, propodeal horns, hind coxa, trochanters and basal half of femur yellow; apical half of hind femur brown; hind tibia brown but whitish yellow basally; hind basitarsus basally, tarsus 2-4 whitish yellow; telotarsus infuscate; ovipositor sheath brown.
Notes.— This species is closely related to Cornutorogas maetoi van Achterberg, 2004, but the new species differs by the following features: pronotum slender in dorsal view, mesoscutum and scutellum smooth and fifth tergite coarsely striate, inter-mingled with discrete punctures. It differs from C. similis spec. nov. as follows: antenna of ♂ without white segments, entirely brown; mesopleuron polished and smooth ventrally, rugose-areolate dorsally, finely punctate medially; precoxal sulcus rather deep and strongly carinate (fig. 21) and propodeum irregularly rugose.