Jezonogonalos nigrata
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Ordo: Hymenoptera
Familia: Trigonalyidae
Genus: Jezonogonalos
Name
Jezonogonalos nigrata Chen & van Achterberg & He & Xu, 2014 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype, + (IZCAS) “[China:] Sichuan, Mt. Emei, Xixiangchi, 1800–2000 m, 17.VIII.1957, Ke-ren Huang, IOZ(E)1495442”. Paratypes: 2 + (IZCAS) “[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”).
Original Description
- Chen, H; van Achterberg, C; He, J; Xu, Z; 2014: A revision of the Chinese Trigonalyidae (Hymenoptera, Trigonalyoidea) ZooKeys, 385: 1-207. doi
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