Foenatopus weii

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Taxonavigation

Ordo: Hymenoptera
Familia: Stephanidae
Genus: Foenatopus

Name

Foenatopus weii Chen & Achterberg & Xu, 2016 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile

Material examined

Holotype, ♀ (SCAU), CHINA: Yunnan, Jinghong, Nanbanhe National Nature Reserve, 22°15'47.39"N, 100°36'3.22"E, 892 m, 19–23.VII.2011, Nasen Wei, yellow pan trap.

Etymology

Named after the collector Dr. Nasen Wei.

Diagnosis

Frons finely and transversely carinate-rugose (Fig. 2); vertex finely and transversely striate (Fig. 4); pronotum slender and mostly coriaceous, but anteriorly transversely rugulose (Figs 3, 5); scutellum (Fig. 5), propleuron and mesopleuron (Figs 3, 6) coriaceous; propodeum (Figs 5, 6) with medium-sized, circular foveolae and with coriaceous interspaces, inside of foveolae polished; fore wing with vein 2-CU1 absent (Fig. 9); most of mid tarsus ivory; subapical part of ovipositor sheath whitish (Fig. 11). This species is most similar to Foenatopus flavidentatus (Enderlein, 1913) but can be distinguished by the combination of the following characteristics: frons with two rather than three short longitudinal ivory streaks; pronotum entirely coriaceous (smooth posteriorly in Foenatopus flavidentatus); propodeum more spaced foveolate (reticulate-foveolate in Foenatopus flavidentatus); hind femur entirely black (hind femur chestnut brown and with two large ventral teeth yellowish in Foenatopus flavidentatus).

Description

Holotype. Female. Body length 12.2 mm; fore wing length 6.1 mm.
Colour. Black (Fig. 1), except: frons laterally with short ivory streaks not reaching level of anterior coronal tooth (Fig. 2); temple brown with ivory streak along lower half of the eye, streak becoming narrow apically (Fig. 3); base of mandible yellow; most of mid tarsus ivory; subapical part of ovipositor sheath whitish (Fig. 11).
Head. Antenna with 33 segments; first flagellomere 3.0 × as long as wide, and 0.6 × as long as second flagellomere; three anterior coronal teeth large and acute, both posterior ones short and wider; frons finely and transversely carinate-rugose (Fig. 2); coronal area with some longitudinal carinae; vertex finely and transversely striate (Fig. 4); temple non-angulate, smooth and shiny (Fig. 3).
Mesosoma. Pronotum (Figs 3, 5) slender and mostly coriaceous, but with transverse rugulae anteriorly; neck anteriorly deeply emarginated, neck at slightly lower level than middle part of pronotum (Fig. 3); anterior half of mesoscutum transversely coriaceous, posterior half with shallow and large foveolae; notauli and middle groove distinct; scutellum (Fig. 5), propleuron and mesopleuron (Figs 3, 6) coriaceous; propodeum (Figs 5, 6) with medium-sized, circular foveolae and with wide coriaceous interspaces, inside of foveolae polished; fore wing (Fig. 9) with vein 2-CU1 absent; pterostigma elongate and subparallel-sided, acute apically, 15.4 × as long as its maximum width and 3.1 × as long as vein r; vein r and vein SR1 obtusely-angled, vein r ends 0.2 × length of pterostigma behind level of apex of pterostigma; vein SR1 subparallel to costal margin; hind coxa transversely striate, basal third rugose; hind femur swollen, microreticulate, ventrally with two large acute teeth and with one smaller tubercle basally (Fig. 7); hind tibia coriaceous, 1.2 × as long as hind femur, basal narrow part of hind tibia 1.2 × as long as widened part, inner side of widened part basally distinctly depressed, followed by convex and setose area, apically densely setose.
Metasoma. First tergite transversely striate, 14.7 × as long as its maximum width, 3.5 × as long as second tergite and 1.1 × as long as remainder of metasoma; basal 0.1 of second tergite rugose, remaining tergites largely smooth to weakly coriaceous; pygidial area distinctly differentiated, pygidial impression reverse V-shaped; length of ovipositor sheath 0.7 × as long as body length, length of subapical whitish band 1.9 × length of dark apex (Fig. 11).
Male. Unknown.

Distribution

Oriental: China (Yunnan).

Biology

Collected in July. Host not known.
In the key to species of the genus Foenatopus by Hong et al. (2011), the new species can be included by replacing couplet 8 as follows:

Biology — H. Chen , C. Achterberg , Z. Xu

8		Middle pale stripe of frons comparatively wide dorsally (Figs 124, 133 in Hong et al. 2011) and base of anterior tooth of corona yellowish-brown; pronotum often yellowish-brown or dark brown posteriorly and usually contrasting with black mesoscutum (Figs 127, 151 l.c.); teeth of hind femur completely to partly pale yellowish or ivory (Fig. 129 l.c.)     Foenatopus flavidentatus (Enderlein, 1913)
–		Middle pale stripe of frons absent (Fig. 2) or narrow dorsally (Fig. 76 l.c.) and base of anterior tooth of corona dark brown or black; pronotum black posteriorly and as black as mesoscutum (Figs 59, 78 l.c., also Fig. 5); teeth of hind femur often completely or largely black or dark brown (Figs 61, 71 l.c., also Fig. 7)    9
9		Pronotum with posterior half distinctly striate or carinate (Figs 175, 176 l.c.); face of female without distinct pale lateral stripes (Fig. 182 l.c.); frons comparatively coarsely sculptured (Fig. 182 l.c.)     Foenatopus quadridens (Elliott, 1920)
–		Pronotum with posterior half mainly reticulate-coriaceous (Fig. 5), at most with some short striae or carinae (Figs 50, 59, 68, 78 l.c.); face of female with distinct pale lateral stripes (Fig. 2); frons comparatively finely sculptured (Fig. 2)    10
10		Middle stripe of frons abent (Fig. 2); anterior half of mesoscutum coriaceous (Fig. 5); propodeum (Figs 5, 6) with medium-sized, circular fovelae and with wide coriaceous interspaces     Foenatopus weii sp. n.
–		Middle stripe of frons present (Fig. 2); anterior half of mesoscutum striate (Fig. 5); propodeum strongly and densely reticulate-foveolate, the foveolae rather large and irregularly shaped (Figs 52, 70 l.c.)    11
11		Ovipositor sheath completely black (Fig. 54 l.c.); anterior half of pronotum in lateral view without transverse carinae and flat medially or slightly impressed (Fig. 51 l.c.); fore wing with vein 2-CU1 absent (Fig. 49 l.c.)     Foenatopus brevimaculatus Hong, van Achterberg & Xu, 2011
–		Ovipositor sheath with ivory subapical band (Figs 62, 73 l.c.); anterior half of pronotum in lateral view with transverse carinae and depressed medially (Fig. 79 l.c.); fore wing with vein 2-CU1 weakly developed, 0.2 × as long as cu-a (Fig. 67 l.c.)     Foenatopus chinensis (Elliott, 1919)

Original Description

• Chen, H; Achterberg, C; Xu, Z; 2016: Descriptions of a new species of Foenatopus Smith from China and the male of Parastephanellus brevicoxalis (Hymenoptera, Stephanidae) ZooKeys, (612): 113-123. doi

Images

Figure 1. Foenatopus weii sp. n., holotype, female, dorsal habitus. Scale bar: 1 mm.  Figures 2–5. Foenatopus weii sp. n., holotype, female. 2 Head frontal 3 head and pronotum lateral 4 head dorsal 5 mesosoma dorsal. Scale bars: 1 mm.  Figures 6–11. Foenatopus weii sp. n., holotype, female. 6 Mesopleuron, metapleuron and propodeum lateral 7 hind leg 8 hind coxa lateral 9 fore wing 10 first tergite dorsal 11 apical ovipositor sheath. Scale bars: 1 mm.