Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011

Tan, Jiang-Li, Achterberg, Cornelis Van, Tan, Qing-Qing, Zhou, Tong & Li, Tao, 2018, Parastephanellus Enderlein (Hymenoptera: Stephanidae) revisited, with description of two new species from China, Zootaxa 4459 (2), pp. 327-349: 332-335

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Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011


Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011 

Figs 18–34View FIGURES 18–26View FIGURE 27View FIGURES 28–34

Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011: 39  –41.

Material: 5 ♀ ( NWUX, RMNHAbout RMNH): “[NE China:] Liaoning, Haicheng, Chagou, Hongqiling , 7/, Maoling  

Sheng”, “reared from stem of Quercus liaotungensis Koidz.  infested by Curculionidae  ”; 4 ♂ (NWUX, RMNH), same data but 31. v./1 /

Diagnosis. Ivory streak of temple more or less contrasting with chestnut to orange brown posterior part of temple in lateral view ( Fig. 26 View Figure ), separated from occipital carina in dorsal view ( Figs 25 View Figure , 33 View Figure ); temples evenly rounded in dorsal view ( Fig. 25 View Figure ); frons of ♀ largely dark brown; medio-anteriorly pronotum steeply arising behind neck ( Fig. 19 View Figure ); pronotum below tegulae costate ( Fig. 19 View Figure ); vein 1-M of fore wing about as long as vein m-cu and 1.1–1.6 × vein 1-SR ( Fig. 18 View Figure ); vein 1-SR of fore wing strongly angled with vein 1-M and approx. 1.5 × as long as vein 2-M+CU1 ( Fig. 18 View Figure ); vein m-cu of fore wing 1.5–1.7 × longer than vein 2-SR+M; sclerotized part of vein 2-M of fore wing surpassing level of apex of vein r; vein r of fore wing ends near level of apex of pterostigma ( Figs 18 View Figure , 28 View Figure ); hind coxa of ♀ 2.1–2.2 × as long as wide in dorso-lateral view ( Fig. 21 View Figure ; ♂ up to 2.6 x); first metasomal tergite of ♀ moderately robust, 4.4–5.5 × as long as wide (cf. Fig. 30 View Figure ); emargination of pygidial area of ♀ wide ( Fig. 22 View Figure ), distinctly protruding and truncate latero-apically; ovipositor sheath 1.4–1.7 × as long as body.

Description. Figured ♂ from Liaoning, length of fore wing 7.4 mm, and of body 10.8 mm.

Head. Antenna with 30 segments; three coronal teeth large and distinctly carinate; frons coarsely transversely rugose ( Fig. 32 View Figure ); vertex transversely striate-rugose ( Fig. 33 View Figure ); temple smooth and shiny ( Fig. 29 View Figure ), evenly convex behind eyes in dorsal view ( Fig. 33 View Figure ).

Mesosoma. Pronotum distinctly sculptured; laterally neck with several carinae; posterior part of pronotum rugulose medially and steep anteriorly; scutellum coriaceous and with several foveolae; metapleuron reticulate rugose dorsally; propodeum coarsely foveolate.

Wings. Fore wing ( Fig. 28 View Figure ): vein 1-M 1.6 × as long as vein 1-SR and 1.2 × vein m-cu; vein cu-a slightly antefurcal and subvertical; vein 2-SR 1.5 × as long as vein r; pterostigma rather directly narrowed apically, 5.0 × as long as wide; vein r ends  near level of apex of pterostigma ( Fig. 28 View Figure ); vein 1-SR 1.3 × as long as parastigmal vein; basal 0.3 of vein 3-CU1 tubular, remainder largely nebulous, apically distinctly widened.

Legs. Hind coxa 2.2 × as long as wide (in latero-dorsal view; Fig. 31 View Figure ; in other males up to 2.6 x), flat area and laterally densely aciculate and remainder regularly transversely rugose; hind femur ( Fig. 27 View Figure ) strongly swollen, shiny, densely aciculate-coriaceous and with 2 large ventral teeth; hind tibia 1.1 × as long as hind femur, basal narrow part 1.1 × as long as widened part; outer side of hind tibia aciculate-coriaceous and ventrally with some oblique carinae; widened part of inner side distinctly V-shaped depressed subbasally and densely setose apically; ventral length of hind basitarsus 3.4 × as long as its apical width.

Metasoma. First tergite coarsely reticulate rugose basally and remainder rather finely transversely rugose, 4.7 × as long as its maximum width ( Fig. 30 View Figure ), 1.7 × as second tergite and 0.7 × as second and following tergites combined; second tergite basally rugulose, remainder of metasoma superficially micro-reticulate; pygidial process distinct and tubular apically ( Fig. 34 View Figure ); parameres convex, densely and moderately long setose (cf. Fig. 86 View Figure ).

Colour. Black; four basal antennal segments, palpi and frons brownish yellow; face, temple ventrally, and temple near eye, streak up to vertex, base of middle tibia and basitarsus, pale yellowish ( Figs 27 View Figure , 29 View Figure ); temple posteriorly, fore leg (except coxa up to base of femur), reminder of middle tibia and tarsus, middle femur anteriorly, narrow part of hind tibia, hind tarsus and base of second tergite mainly orange brown; pterostigma (but base narrowly ivory) and veins dark brown; wing membrane subhyaline.

Variation. Length of fore wing 6.0– 8.5 mm, and of body 9.1–11.6 mm; hind coxa 2.2–2.6 × longer than its maximum width; whitish basal part of pterostigma is sometimes more conspicuous than shown in Fig. 28 View Figure ; narrow part of hind tibia orange or dark brown.

Distribution. China (Zhejiang, * Liaoning).

Notes. Chen et al. (2016) associated a male with this species and described it. Now we have a reared series of P. brevicoxalis  with both sexes, it is obviously the incorrect male, because the reared males fit much better with the key characters of the female holotype (as elucidated above in the key). Therefore, we describe below for the first time the male of this species. For the male described by Chen et al. (2016a) see P. evexus  .


National Museum of Natural History, Naturalis














Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011

Tan, Jiang-Li, Achterberg, Cornelis Van, Tan, Qing-Qing, Zhou, Tong & Li, Tao 2018


Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011 : 39

Achterberg & Xu, 2011 : 39