Taiwanhormius Belokobylskij, 1988

Genus Taiwanhormius Belokobylskij, 1988 View in CoL

Type species: Taiwanhormius granulosus Belokobylskij, 1988 View in CoL

Belokobylskij 1988: 20; 1998: 131; Wharton 1993: 160; van Achterberg 1995: 66; He et al. 2004: 464; Yu et al. 2016.

Redescription. Head ( Figs 1B–D View FIGURE 1 ; 3 B–D View FIGURE 3 ) transverse, not depressed dorso-ventrally; vertex always smooth. Ocelli small, arranged in almost equilateral triangle. Frons flat or weakly convex, without median keel or furrow. Eyes glabrous. Occipital carina present and distinct, complete dorsally, usually obliterated ventrally at rather short distance and not fused with hypostomal carina. Malar suture absent. Clypeus high; clypeal suture distinct and complete. Maxillary palpus long, 6-segmented; labial palpus short, 4-segmented, all their segments relatively long, never shortened. Antenna ( Figs 1A, D, E View FIGURE 1 ; 3 A, E, F View FIGURE 3 ) slender, weakly setiform, with 15–23 antennomeres, distinctly longer than body, in female with pale 5–6 subapical antennomeres, but in male antennomeres entirely dark in its apical half. Scape short and rather wide, without apical lobe and basal constriction. Pedicel subcylindrical, relatively long, 0.6–0.7 × as long as scape. Flagellar antennomeres slender, first flagellomere equal to or only weakly longer than second flagellomere. Apical flagellomere acuminated distally, but without spine.

Mesosoma ( Figs 1F, G View FIGURE 1 ; 3G, H View FIGURE 3 ) not depressed. Neck of prothorax rather short, weakly convex dorsally (lateral view). Propleural dorsoposterior flange rather wide and short. Mesonotum highly and roundly elevated above pronotum, entirely or predominantly densely granulate. Median lobe of mesonotum without antero-lateral corners and medial longitudinal furrow or carina. Notauli complete, deep and narrow, finely sculptured. Prescutellar depression long, relatively deep, with median carina. Scutellum weakly convex, with lateral carinae, at least partly finely granulate or coriaceous. Metanotum with short, rather narrow and subrounded apically tooth (lateral view). Precoxal sulcus distinct, rather narrow, but deeper and wider posteriorly, short, straight, distinctly sparsely crenulate. Prepectal carina distinct and complete; postpectal carina absent. Metapleural flange short, wide, rounded apically. Propodeum with all areas delineated by high carinae; areola relatively long and wide, pentagonal; lateral tubercles absent.

Wings ( Figs 2A View FIGURE 2 ; 4A View FIGURE 4 ). Pterostigma of fore wing narrow and triangular. Radial (marginal) cell never shortened. First (2RS) and second (r-m) radiomedial vein present. Discoidal (discal) cell petiolate anteriorly. Recurrent vein (m-cu) relatively short, distinctly postfurcal to first radiomedial vein (2-SR). First abscissa of medial vein (1-SR+M) sinuate. Nervulus (cu-a) short, usually interstitial to basal vein (1-M) or sometimes weakly postfurcal. Mediocubital vein (M+CU1) straight. Basal (1-M) and recurrent (m-cu) veins subparallel. Parallel vein (CU1a) usually interstitial, only rarely not interstitial and arising from anterior third of distal margin of brachial (subdiscal) cell. Brachial (subdiscal) cell distally closed before, on or weakly behind recurrent vein (m-cu). Both transverse anal veins (1a and 2a) absent. Hind wing with three hamuli. Medial (subbasal) cell rather narrow, distinctly widened towards apex, 0.4 × as long as hind wing. First abscissa of mediocubital vein (M+CU) 0.5–0.7 × as long as second abscissa (1-M). Recurrent vein (m-cu) present, usually unsclerotised, but pigmented basally.

Legs ( Figs 1A, H View FIGURE 1 ; 3A, I View FIGURE 3 ) slender and long. Hind femur long and narrow, entirely sculptured. Hind basitarsus usually as long as second–fifth segments combined.

Metasoma ( Figs 2B, C View FIGURE 2 ; 4B, C View FIGURE 4 ). First tergite coarsely sclerotised, with distinct, complete and weakly curved subparallel dorsal carinae, dorsope distinct or small; spiracular tubercles small and situated in basal third of tergite. Tergite behind first one soft and crumpled, sometimes basally weakly and sparsely punctate or shagreened. Second tergite rather long, basolaterally with short oblique furrows. Suture between second and third tergites rather distinct. Laterotergites of second and third tergites not separated. Ovipositor sheath ( Figs 1A View FIGURE 1 ; 2C View FIGURE 2 ) relatively long, distinctly longer than first tergite, usually longer than half of metasoma.

Comparative diagnosis. The genus Taiwanhormius Belokobylskij is most similar to the hormiine genus Hormius Nees, 1818 ( Hormiinae : Hormiini ), which is distributed worldwide, but differ from the latter by long ovipositor with its sheath longer than half of metasoma (short, sheaths not larger than 0.3 of metasoma in Hormius ), third segment of the labial palpi not shortened (distinctly shortened, subglobular or disk-shaped in Hormius ), the mesoscutum mainly or entirely granulate (predominantly smooth in Hormius ), and antenna of female with several contrastingly pale subapical antennomeres (predominantly dark in Hormius ).

Hosts. Unknown.

Distribution. Oriental and Palaearctic (East) regions.