Zele aquilus Fang, van Achterberg & Chen sp. nov.

Fig. 4

Type material.

Holotype. China – Shaanxi Prov. • ♀; Pingheliang, Ningshan; 33.47°N, 108.50°E; alt. 2105 m; 25 Jul. – 22 Oct. 2017; Jiang-li Tan, Qing-qing Tan leg.; B [lack] Malaise trap; (ZJUH) No. 202315012 . Paratypes. China – Shaanxi Prov. • 1 ♀; same data as for holotype; (ZJUH) No. 202315002 . • 1 ♀; Pingheliang, Ningshan; alt. 2188 m; 17 Aug. – 1 Oct. 2016; Jiang-li Tan, Qing-qing Tan leg.; B [lack] Malaise trap; (NWU) No. 202315001 .

Diagnosis.

Metanotum with enlarged smooth knob medio-posteriorly and median carina in front of it short (Fig. 4 C); precoxal sulcus sparsely sculptured anteriorly and mesopleuron shiny (Fig. 4 B); vein 1 r-m of hind wing 1.8–2.2 × longer than vein 1 - M (Fig. 4 E); pterostigma of ♀ dark brown (Fig. 4 D); length of malar space 0.2 × basal width of mandible; first tergite 2.3–2.6 × longer than its apical width; dorsope of first tergite medium-sized (Fig. 4 K), but space between dorsope wider than dorsope; hind tarsus mainly white; ovipositor sheath 0.25–0.33 × as long as fore wing; first tergite costate medio-posteriorly (Fig. 4 K).

Comparative diagnosis.

Very similar to Z. inclinator but differs mainly by the large ocelli (smaller in Z. inclinator), the white hind tarsus (yellowish in Z. inclinator) and the blackish brown pterostigma (pale yellow in Z. inclinator).

Description.

Holotype, ♀, length of fore wing 5.1 mm, of body 4.5 mm, and antenna 1.2 × as long as fore wing.

Head. Antennal segments 34, third segment 1.1 × longer than fourth segment and third, fourth and penultimate segments 3.6 ×, 3.4 ×, and 2.0 × longer than wide, respectively; length of maxillary palp 1.3 × longer than height of head; frons smooth and behind antennal sockets distinctly impressed; POL: diameter of posterior ocellus: OOL = 7: 5: 5; vertex superficially finely punctulate and densely setose (Fig. 4 H); clypeus strongly convex in lateral view, distinctly punctate and with long setae (Fig. 4 I); face superficially finely punctate and distinctly narrowed ventrally, minimum width of face 1.2 × height of face (Fig. 4 G); length of eye 2.5 × temple in dorsal view (Fig. 4 H); length of malar space 0.2 × basal width of mandible.

Mesosoma. Length of mesosoma 1.5 × its height; dorsally side of pronotum shiny and smooth, medially punctate and with three carinae and posteriorly largely smooth except crenulate posterior border; prepectal carina no-lamelliform; precoxal sulcus dorsally distinctly crenulate and anteriorly broadly rather superficially punctate and shiny; remainder of mesopleuron smooth and shiny but antero-dorsally punctate (Fig. 4 B); mesosternum largely smooth and shiny; metapleuron spaced rugose; mesoscutal lobes superficially punctate or punctulate, interspaces smooth and shiny; scutellar sulcus deep anteriorly, with one long and four short carinae; scutellum slightly convex, and punctulate, its medio-posterior depression rather wide and laterally crenulate; metanotum with large posterior knob and with a pair of rather short carinae medially; propodeum completely areolate, remotely rugose, subbasal carina complete, angulate, medio-longitudinal carina complete, and mostly weakly developed; in lateral view propodeum gradually lowered posteriorly except for dorsal part in front of subbasal carina, dorsal part comparatively large, mainly smooth and shiny (Fig. 4 B, C).

Wings. Fore wing (Fig. 4 D): r: 3 - SR: SR 1 = 9: 29: 134; 2 - SR: 3 - SR: r-m = 37: 29: 23; 1 - CU 1: 2 - CU 1 = 2: 28; cu-a vertical, postfurcal. Hind wing (Fig. 4 E): r absent; M + CU: 1 - M = 70: 22; 1 r-m 1.8 × 1 - M.

Legs. Hind coxa largely smooth dorsally; length of fore femur 7.5 × its width (Fig. 4 L); length of fore tibial spur 0.3 × fore basitarsus (Fig. 4 M); lengths of hind femur and basitarsus 7.0 × and 9.2 × their widths, respectively (Fig. 4 N).

Metasoma. First tergite 2.6 × longer than its apical width, part behind level of spiracles distinctly widened and rugose but posteriorly striate, dorsope elliptical and medium-sized, area behind it depressed (Fig. 4 K), laterope medium-sized and sublateral (Fig. 4 J); second tergite glabrous, smooth and strongly shiny; ovipositor comparatively slender basally; length of ovipositor sheath 0.22 × as long as fore wing and sheath with semi-erect, medium-sized setae (Fig. 4 A, F).

Colour. Body rather dark reddish brown, but head (except posteriorly), scutellum, and metasoma (except first tergite) brownish yellow; palpi and tegulae pale yellowish basally but palpi largely whitish, hind tarsus largely white, but telotarsi dorsally and base of basitarsus brownish; veins and pterostigma dark brown; wings subhyaline with slight infuscation; apex of ovipositor sheath brown.

Variation. Vein 1 r-m of hind wing 1.8–2.2 × as long as vein 1 - M; fore femur of ♀ 7.0–7.5 × longer than wide; hind femur of ♀ 6.0–7.0 × longer than wide; first metasomal tergite 2.3–2.6 × its apical width. Antennal segments of ♀ 34 (1), 35 (2); of ♂ unknown.

Distribution.

China (Shaanxi).

Biology.

Unknown.

Etymology.

Named after the blackish brown pterostigma; aquilus is Latin for blackish.