Nedinoschiza khuathalinhae Long, sp. nov.

(Figs 35–49)

Material examined. Holotype, ♀, “Bracn. 1485 ” (IEBR), NE Vietnam: Tuyen Quang, Na Hang NP, Son Phu, forest, MT, 22°17’32’’N 105°28’19’’E, 570 m, 15.vii.2017, KD Long . Paratypes 5 ♀, “Bracn. 1087 ” (IEBR), NC Vietnam, Ha Tinh, Huong Son, forest, 18°22’ N 105°13’ E, 450 m, April 7–13 1998. Malaise, AMNH, K. Long; “Bracn. 1088 ” (AMNH), ibid., but 600 m, April 15–21, 1998, Malaise AMNH, K. Long; “Bracn. 1564 ”, “Bracn. 1565 ” (IEBR), “Bracn. 1566 ” (RMNH), NE Vietnam: Tuyen Quang, Na Hang NP, Son Phu, forest, MT, 22°17’32’’N 105°28’19’’E, 570 m, 25.ix.2017, KD Long; 1 ♂, “Bracn. 524 ” (IEBR), NC Vietnam, Ha Tinh, Huong Son, forest, 18°22’ N 105°13’E, 300 m, 28.iv.1998, sweep, K. Long .

Description. Holotype, female, length of body 6.7 mm, fore wing 6.5 mm, antenna 5.6 mm, ovipositor sheath 7.7 mm (Fig. 35).

Head. Antenna with 39 antennomeres; length of first flagellomere 1.1 × second (9: 8); first and second flagellomere 2.25 and 2.0 × as long as wide respectively; head 1.2 and 1.3 × as wide as long in anterior (frontal) and dorsal view respectively; clypeus separated from face with distinct transverse carina; face as wide as long, with wide groove between antennal sockets, sparsely setose, smooth medially, punctate laterally (Fig.37); in frontal view, eye length 1.9 × as long as its transverse width (28: 15); height of clypeus: inter tentorial distance: tentorial ocular distance = 5: 9: 9; distance between tentorial pits as long as distance from tentorial pit to eye margin (Fig. 37); malar space 0.9 × basal width of mandible (10: 11); in lateral view, transverse width of eye 1.25 × as long as temple (20: 16) (Fig. 38); in dorsal view length of eye 1.3 × as long as temple (21: 16), sparsely setose, not emarginated beyond antennal sockets (Fig. 36); POL: OD: OOL = 4: 4: 13; frons distinctly depressed laterally, with median carina, smooth; vertex and temple smooth, with fine sparse punctures and setae.

Mesosoma. Mesosoma 1.7 × as long as high (100: 60) (Fig. 40); mesoscutum smooth, setose, glabrous laterally; notauli distinct, shallow; scutellar sulcus narrow, punctate (Fig. 39); scutellum smooth, setose; mesopleuron smooth medially, sparsely punctate and setose posteriorly (Fig. 40); metapleuron sparsely punctate and setose; median area of metanotum without midlongitudinal carina anteriorly; propodeum almost smooth, sparsely punctate and setose.

Wings. Fore wing (Fig. 44): length of pterostigma 4.0 × its width; angle between vein C+SC+R and 1-RS about 70°; vein 1-RS+M curved basally; ratio of length of veins r: 2-RS: 3-RS: SR1 = 9: 18: 37: 61 and 2-RS: 3-RS: r-m = 19: 37: 11; vein 1cu-a slightly postfurcal; second submarginal cell parallel sided, basal length 5.0 × its apical width (Fig. 44). Hind wing (Fig. 45): apex of vein C-SC+R1 with one straight hamulus; vein 2-SC+R longitudinal; vein SR slightly curved subbasally, narrowed apically (Fig. 45); vein 1r-m 1.25 × 2-SC+R; apex of vein SC+R1 with three curved hamuli.

Legs. Ratio of lengths of fore femur: tibia: basitarsus: hind tarsus = 32: 30: 23: 66; fore tibia: fore tarsus (30: 66); fore tibia with stout setae (Fig. 43); middle femur (Fig. 42) and hind femur robust (Fig. 41); ratio of lengths of hind femur: tibia: basitarsus: hind tarsus = 52: 91: 31: 85; hind femur, tibia, basitarsus 3.25, 10.1 and 5.2 × as long as wide respectively; outer and inner hind tibial spurs 0.25 × and 0.35 × as long as hind basitarsus; hind coxa finely and sparsely punctate, with long setae; tarsal claw simple, without pointed basal lobe (Fig. 46).

Metasoma. First metasomal tergite 1.3 × as long as wide apically (40: 30), distinctly rugose with a midlongitudinal carina and a pair of lateral smooth longitudinal groove (Fig. 47); second metasomal tergite rugose, 1.5 × as long as third tergite (30: 20), and 1.3 × as wide (basally) as long (40: 30); longitudinally striate area, with a pair of smooth sublateral areas and lateral shallow, crenulated grooves, midbasal area of second tergite 0.4 × median length of the tergite, connected with second metasomal suture by longitudinal carina in 0.6 apical of the tergite (18: 30); lateral sides of midbasal area crenulated (Fig. 47); second metasomal suture wide, crenulate; divergent grooves of second tergite wide and crenulate; third-fourth tergites rugo-striate (Fig. 47); fifth-sixth metasomal tergites smooth, with sparse setae and fine punctures; hypopygium acute apically (Fig. 48); ovipositor sheath setose, 1.2 × as long as fore wing; ovipositor very thin, with dorsal nodus and ventral serrations.

Colour. Body black; head yellow (Fig. 35); stemmaticum black (Fig. 36); antenna black; fore coxa and tibia yellow; fore femur yellow, except base black; fore trochanters and trochantellus black; middle and hind legs black; wings black; ovipositor sheath dark brown; ovipositor brown.

Variation. Females: length of body 5.3–9.0 mm; fore wing 4.6–8.4 mm; antenna with 37–41 antennomeres.

Male. Length of body 4.1 mm, fore wing 4.1 mm, antenna 3.5 mm; antenna with 30 antennomeres (Fig. 49).

Distribution. NE Vietnam (Tuyen Quang); NC Vietnam (Ha Tinh).

Biology. Unknown.

Etymology. The new species is named after the granddaughter of the second author, Khuat Ha Linh.

Notes. Nedinoschiza khuathalinhae sp. nov. is similar to Nedinoschiza pinguis Papp, from China in having the longitudinally striated midbasal area of second metasomal tergite and sculptured third metasomal tergite, but differs from N. pinguis by the following characters: 1) Length of eye 1.3 × as long as temple in dorsal view (Fig. 36) [vs 0.8 × in N. pinguis, cf. Fig. 4C in Ranjith & Priyadarsanan (2021)]; 2) Midbasal area of second metasomal tergite 0.4 × second tergite length (Fig. 47) [vs 0.75 × in N. pinguis, cf. Fig. 5A in Ranjith & Priyadarsanan (2021)]; and 3) Pronotum and mesoscutum black (Fig. 39) [vs yellow in N. pinguis, cf. Figs 4D, E in Ranjith & Priyadarsanan (2021)].