Jezonogonalos nigrata, Chen, Hua-yan, van Achterberg, Cornelis, He, Jun-hua & Xu, Zai-fu, 2014

Chen, Hua-yan, van Achterberg, Cornelis, He, Jun-hua & Xu, Zai-fu, 2014, A revision of the Chinese Trigonalyidae (Hymenoptera, Trigonalyoidea), ZooKeys 385, pp. 1-207 : 24-27

Jezonogonalos nigrata sp. n. Figs 85-95

Type material.

Holotype, ♀ (IZCAS) "[China:] Sichuan, Mt. Emei, Xixiangchi, 1800-2000 m, 17.VIII.1957, Ke-ren Huang, IOZ(E)1495442". Paratypes: 2 ♀ (IZ CAS) "[China:] Sichuan, Mt. Emei, Jiulaodong, 1800-1900 m, 28.VII.1957, Ke-ren Huang, IOZ(E)1495443; id., but 19.VIII.1957, You-cai Lu, IOZ(E)1495444".

Diagnosis.

Occipital carina very wide and crenulate medio-dorsally (Fig. 87); outer side of supra-antennal elevations subvertical and elevations about 0.7 times as long as scapus (Figs 87, 90); apical half of supra-antennal elevations black (Fig. 87); head dorsally coarsely reticulate-punctate (Fig. 87); frons and vertex densely and coarsely punctate (Figs 86, 87); basal half of metasoma largely smooth, apical half mainly punctate (Fig. 93); metasoma largely black, second tergite with pair of small pale yellow spots postero-laterally (Fig. 94); first tergite about 0.7 times as long as its apical width (Fig. 95); second sternite simple (Fig. 95); third sternite about 0.2 times as long as second sternite (Fig. 95).

Description.

Holotype, female, length of body 10.5 mm (of fore wing 8.6 mm).

Head. Antenna with 23 segments; frons densely and coarsely punctate; vertex densely punctate behind stemmaticum, becoming spaced punctate posteriorly (Fig. 87); temple largely smooth with sparse fine punctures (Fig. 90); head gradually narrowed behind eyes, eye in dorsal view 0.7 times as long as temple (Fig. 87); occipital carina strongly widened and lamelliform medio-dorsally, with many short carinae; supra-antennal elevations strongly enlarged (about 0.7 times as long as scapus), outer side subvertical and densely punctate; clypeus slightly concave and thick medio-ventrally.

Mesosoma. Length of mesosoma 1.6 times its height (Fig. 92); mesopleuron below transverse mesopleural groove obliquely rugulose anteriorly and largely smooth with sparse fine punctures posteriorly, above groove densely and coarsely rugose (Fig. 92); transverse mesopleural groove narrow, deep and coarsely crenulate; notauli wide and coarsely crenulate; mesoscutum densely and coarsely rugose (Fig. 93); scutellar sulcus wide, both medially and laterally and coarsely crenulate; scutellum coarsely reticulate-rugose, convex medially and anteriorly near level of mesoscutum; metanotum medially protruding, lamelliform and bluntly bifurcating apically and coarsely rugose (Fig. 93); propodeum obliquely rugulose anteriorly, transversely striate medially, smooth and shiny posteriorly (Fig. 93); posterior propodeal carina thick lamelliform, foramen medially 0.4 times higher than wide basally.

Wings. Fore wing: length of vein 1-M 1.1 times as long as vein 1-SR (Fig. 89).

Metasoma. First tergite 0.6 times as long as apically wide, smooth and with shallow elliptical depression medially (Fig. 93); second to sixth tergites largely smooth with sparse and fine punctures; sternites densely and finely punctate; second sternite slightly convex in lateral view; third sternite about 0.3 times as long as second sternite (Fig. 95); hypopygium triangular in ventral view (Fig. 95).

Colour. Black; malar space, lateral margin of all tergites and posterior margin of second sternite ivory; teeth of mandible, antenna and tegulae dark brown; second tergite with pair of small pale yellow spots postero-laterally; legs dark brown to black; pterostigma and posterior half of first submarginal cell to anterior half of marginal cell and area below that dark brown, remainder of wing membrane subhyaline.

Variation. Length of body 8.6-11.0 mm, of fore wing 6.8-8.7 mm; length of vein 1-M of fore wing 1.1-1.6 times as long as vein 1-SR; second to sixth tergites largely superficially coriaceous with sparse and fine punctures.

Male. Unknown.

Biology.

Unknown. Collected in July–August at 1800-2000 m.

Distribution.

China (Sichuan).

Etymology.

Named after the black supra-antennal protuberances: from “niger” (Latin for “black”).