Parastephanellus angulatus, Hong, Chun-dan, van Achterberg, Cornelis & Xu, Zai-fu, 2011

Hong, Chun-dan, van Achterberg, Cornelis & Xu, Zai-fu, 2011, A revision of the Chinese Stephanidae (Hymenoptera, Stephanoidea), ZooKeys 110, pp. 1-108 : 34-35

Parastephanellus angulatus sp. n. Figs 252264

Type material.

Holotype,♀ (SCAU): CHINA: Hainan, Mt. Jianfengling, 5-7.vi.2007, Li-qiong Weng, No. 200800178.

Diagnosis.

Frons densely foveolate-rugose and with obvious medial groove (Fig. 258); temples dark brown and distinctly angulate in dorsal view (Fig. 256); yellowish streak on temple in dorsal view distinctly contrasting with surroundings and reaching vertex but not reaching occipital carina (Figs 256, 257); pronotum transversely rugose in dorsal view (Fig. 253); propodeum sparsely foveolate and with coriaceous interspaces (Fig. 255); pterostigma long and about 6 times as long as wide (Fig. 252); hind femur distinctly swollen, obtuse subbasal tooth comparatively large and apical large tooth comparatively narrow and acute (Fig. 262); hind tibia ventrally with regular weak carinae and basal narrow part of outer side mainly finely aciculate (Figs 262, 263); pygidial process of female medium-sized (Fig. 261).

Description.

Holotype, female, length of body 13.1 mm, of fore wing 8.4 mm, and of ovipositor sheath 19.3 mm.

Head. Flagellum with 32 flagellomeres; length of first flagellomere 4.9 times its maximum width, and 0.6 times second flagellomere; frons coarsely reticulate-rugose, frontal carina present (Fig. 258); three anterior coronal teeth acute, lobe-shaped, both posterior ones as sinuate transverse and wide lamellae; coronal area largely smooth, followed by three coarse and curved transverse carinae, anterior two carinae rather strong and posterior carina weaker; sculpture of vertex varies from undulate-rugose anteriorly to transversely striate posteriorly, narrowly reaching occipital carina (Fig. 256); temple largely smooth and shiny, except with a few punctures bearing setae ventrally (Fig. 257); temple strongly angularly protruding in dorsal view (Fig. 256).

Mesosoma. Neck short and rather stout, anteriorly distinctly emarginate, laterally with pairs of transverse striae, medio-dorsally smooth and posteriorly at much lower level than middle pronotum (Figs 253, 254); pronotal fold absent medially and distinct laterally; remainder of pronotum largely transversely striate and with sparse setae dorsally and posteriorly narrowly smooth and shiny, laterally somewhat striate; middle pronotum not distinctly differentiated from posterior pronotum, lateral oblique groove of pronotum smooth and rather impressed, ventral area below it somewhat sculptured (Fig. 254); propleuron coriaceous and densely setose; anterior third of mesoscutum transversely striate, posteriorly strongly foveolate-rugose; notauli and median groove complete and distinct, formed by closely aligned foveolae; axillae largely coarsely rugose, forming some irregular foveolae; scutellum irregularly aciculate medially and with rather large circular foveolae laterally (Fig. 255); mesopleuron largely rugose and with long, whitish setae, anteriorly more densely pubescent than posteriorly; convex part of metapleuron strongly reticulate-rugose and with rather long whitish setae, ventral part with spaced carinae and smooth interspaces; propodeum foveolate, foveolae circular, medium-sized and with aciculate interspaces, posterior foveolae close to each other and somewhat reticulate (Fig. 255).

Wings. Fore wing (Fig. 252): vein 1-M 2.2 times as long as vein 1-SR and 1.3 times vein m-cu; vein cu-a slightly antefurcal and distinctly curved; vein 2-SR 1.6 times as long as vein r; vein r ends 0.4 times length of pterostigma behind level of apex of pterostigma; vein r and vein 1-M distinctly curved; vein 1-SR approximately as long as parastigmal vein; basal third of vein 3-CU1 tubular, remainder largely nebulous, apically distinctly curved.

Legs. Hind coxa rather robust, largely spaced annularly striate dorsally, basal part rugose, outer side distinctly compressed medially and coarsely rugose (Figs 259, 260); hind femur strongly swollen, finely transversely striate, evenly distributed with small punctures, each puncture bearing a short whitish seta, hind femur with 3 large ventral teeth, basal one obtuse and another two teeth acute, with small tubercles in interspaces (Fig. 262); hind tibia 1.4 times as long as hind femur, basal narrow part about 1.2 times as long as widened part; outer side of hind tibia distinctly obliquely carinate and ventral carina rather stout, narrow part of inner side coarsely obliquely striate, widened part of inner side basally distinctly steeply depressed, medially distinctly convex and granulate, apically densely bristly setose (Fig. 262); basitarsus rather robust, ventral length about 6.0 times as long as its apical width.

Metasoma. First tergite cylindrical, about 8.3 times as long as its maximum width, 2.2 times second tergite and 0.9 times remainder of tergites, basal 0.1 rugose and apical 0.05 smooth, remainder largely finely transversely striate; basal third of second tergite rugose, remainder polished smooth; remainder of tergites densely transversely aciculate; pygidial area with 2 distinct projections, pygidial impression setose and somewhat reverse U-shaped (Fig. 261); ovipositor sheath about 1.5 times as long as body.

Colour. Body colour varies from reddish brown to dark brown; scape, pedicel and first-third flagellomeres brown, remainder of antenna darker; mandibles except apex and clypeus yellow; temple along eye with ivory wide streak; frons, coronal area, basal third of second tergite orange; mesosoma (except neck and lateral part of mesoscutum dark brown) and basal 0.2 of first tergite largely red brown; fore wing membrane largely pale brownish, pterostigma dark brown; apical parts of both second and third tergites with golden yellow patch; ovipositor sheath completely blackish.

Distribution.

China (Hainan).

Etymology.

The name is derived from “angulatus” (Latin for angled) because of the angled temples.