Orientopius curiosigaster Fischer, 1966 (original designation).

Clypeus truncate medio-ventrally (Figs 8, 16); labrum exposed (Fig. 8); occipital carina present latero-dorsally and weakly or not protruding in lateral view (Figs 6, 23); head comparatively long in anterior view (Figs 8, 16) and malar space longer than basal width of mandible (Figs 9, 18); malar suture present (Figs 9, 16); inner sides of antennal sockets normal, not protruding (Fig. 20); around base of middle coxa no circular carina; medio-posterior depression of mesoscutum present (Figs 4, 17); notauli absent posteriorly (Figs 4, 17) or as row of punctures; postpectal carina variable, usually partly present medio-ventrally; vein 3-SR of fore wing 0.9–2.0 times as long as vein 2-SR (Figs 2, 13); metasoma with carapace (Fig. 1), but less developed in males (Figs 23, 24); second tergite sculptured and distinctly longer than third tergite (Figs 5, 23, 24); dorsal carinae of first tergite variable, separated basally (Fig. 24) or medially united in a median carina (Fig. 5); second metasomal suture distinct (Figs 4, 24); third tergite of female with a sharp lateral crease.

Fischer (1966, 1972, 1987) lists as a character of the genus that (translated) the second and third tergites are united and have no transverse furrow (= second metasomal suture). This is a misinterpretation of the carapace of the male holotype (Figs 23, 24); the holotype has a long second tergite, a distinctly crenulate second metasomal suture and a comparatively short third tergite. The fourth tergite is rather exposed and smooth, what is typical for males; females have the fourth tergite largely retracted (Figs 5, 10).

Holotype (ZJUH), ♀, “[S. China: Hunan], Nan Mt., meadow, 18.VII.1988, Fu-Xing Li”.

Vein SR1 ends near apex of fore wing (Fig. 13); vertex moderately densely punctate, with interspaces mostly wider than diameter of punctures or wider (Fig. 4); antenna dark brown, except basally; malar space about 1.5 times as long as basal width of mandible and head less elongate in anterior view (Fig. 8); pterostigma dark brown; mesosoma dark brown or blackish (Figs 1, 3, 4); transverse carina of propodeum distinctly in front of middle of propodeum; hind basitarsus about 3.7 times as long as wide (Fig. 11); dorsal carina of first tergite united subbasally; second tergite about twice as long as third tergite and with rows of punctures between striae (Fig. 5); third tergite 0.3 times longer than its basal width; third metasomal tergite semi-circular and partly distinctly punctate (Fig. 5); fourth tergite of female smooth and retracted (Fig. 1); setose part of ovipositor sheath 0.6 times as long as combined first-third metasomal tergites, 0.2 times as long as fore wing and 0.8 times as long as hind tibia (Fig. 1).

Holotype, ♀, length of body 2.3 mm, of fore wing 2.5 mm.

Head. Antenna with 25 segments and 1.1 times as long as fore wing; third segment 1.1 times as long as fourth segment, length of third, fourth and penultimate segments 2.7, 2.5 and 1.8 times their width, respectively (Figs 7, 12); length of maxillary palp unknown, palp submerged in glue; occipital carina widely removed from hypostomal carina and dorsally absent; hypostomal carina narrow; length of eye in dorsal view 3.3 times temple; temples directly narrowed (Fig. 4) and largely smooth; vertex finely punctate, with interspaces mostly wider than punctures; frons slightly depressed behind antennal sockets and with some curved rugulae, remainder slightly convex and setose, largely finely punctate, with interspaces wider than punctures; face medio-dorsally elevated, coarsely punctate, with interspaces slightly wider than punctures and some striae latero-dorsally; width of clypeus 2.8 times its maximum height and 0.6 times width of face; clypeus flat, smooth and its ventral margin rather thin and medially straight; hypoclypeal depression wide and deep (Fig. 8); labrum flat (including ventral rim); malar suture complete; with punctures between malar suture and clypeus; length of malar space 1.5 times basal width of mandible (Fig. 9); mandible strongly constricted and twisted apically, without distinct ventral carina, second tooth medium-sized.

Mesosoma. Length of mesosoma 1.3 times its height; dorsal pronope absent, pronotum short and nearly vertical anteriorly; pronotal sides smooth but oblique groove anteriorly and posterior groove coarsely crenulate (Fig. 3); epicnemial area with few crenulae dorsally; precoxal sulcus distinctly impressed, but posterior 0.4 absent, and coarsely crenulate (Fig. 3); pleural sulcus distinctly crenulate; mesosternal sulcus and postpectal carina not visible because of glue; metapleuron coarsely reticulate ventrally and dorsally largely smooth (except some punctures); notauli impressed and with few crenulae anteriorly, and largely absent on disk; mesoscutum flattened, with large elliptical medio-posterior depression, setose and punctulate; scutellar sulcus wide and with 3 coarse crenulae (Fig. 4); scutellum rather flat and sparsely punctulate; metanotum with weak median carina; propodeum posteriorly largely smooth, with coarse curved transverse carina in front of middle and anteriorly rugose and with rather short median carina (Fig. 5).

Wings. Fore wing (Fig. 2): pterostigma triangular; 1-R1 ending close to wing apex and 1.3 times as long as pterostigma; r:3-SR:SR1 = 5:16:50; 2-SR:3-SR:r-m = 16:16:5; r slender; 1-M and SR1 slightly curved; m-cu just postfurcal; cu-a slightly postfurcal and 1-CU1 hardly widened; first subdiscal cell closed, CU1b medium-sized and shorter than 3-CU1; M+CU1 sclerotized. Hind wing: M+CU:1-M:1r-m = 25:18:12; cu-a straight; m-cu absent.

Legs. Length of femur, tibia and basitarsus of hind leg 3.8, 7.0 and 3.7 times as long as wide, respectively (Fig. 11); hind femur with long setae and tibia densely rather short setose; third and fourth segments of fore tarsus distinctly longer than wide and about as long as wide, respectively.

Metasoma. Length of first tergite 0.8 times its apical width, its surface smooth in front of united dorsal carinae and coarsely punctate-reticulate behind carinae, convex and no median carina posteriorly (Fig. 5); second suture coarsely crenulate, nearly straight, slightly widened medially and distinctly impressed; second tergite with row of punctures between longitudinal striae; median length of second tergite 2.1 times median length of third tergite; third tergite mainly with rows of punctures, but medially and posteriorly smooth; following tergites smooth and largely retracted below carapace; length of setose part of ovipositor sheath 0.22 times fore wing, 0.6 times first-third tergites combined and 0.8 times longer than hind tibia; hypopygium far retracted, truncate apically and about 0.2 times as long as metasomal carapace.

Colour. Dark brown, including pterostigma, veins and antenna (but scapus yellow); head and mandible yellow, but head medio-dorsally and posteriorly infuscate; ovipositor sheath blackish; wing membrane subhyaline.

Oriental China (Hunan).

Unknown.

Name “punctatus”, because of the punctate second metasomal tergite.

The species can be separated from the other non-Palaearctic species as follows: