Jezonogonalos shaanxiensis Tan & van Achterberg

Tan, Jiang-Li, Achterberg, Cornelis van, Tan, Qing-Qing & Zhao, Lin-Peng, 2017, New species of Trigonalyidae (Hymenoptera) from NW China, ZooKeys 698, pp. 17-58 : 29-31

Jezonogonalos shaanxiensis Tan & van Achterberg sp. n. Figs 39, 40-48

Type material.

Holotype, ♀ (NWUX) "NW China: Shaanxi, Lower Changqing Re[ser]v[e], Shanshuping Base, 1504 m, 33.67N 107.57E, 23.ix.-10.xi.2016, Y[ellow Malaise] T[rap], Zhao Lin-Peng, NWUX". Paratypes: 1 ♀ (RMNH), "NW China: Shaanxi, Liping Nat. For. P., MT 1+2, c. 1495 m, 22.vi.-4.ix.2015, 32°47'33"N, 106°39'52"E, JL. Tan & C. v. Achterberg, NWUX"; 1 ♀ (NWUX), "NW. China: Shaanxi, Xunyangba, Ningshan, c. 1300 m, 24.vi. 2011, 33°33'N, 108°32'E, Jiangli Tan, NWUX".

Diagnosis.

Occipital carina very wide medio-dorsally, with pair of curved lamellae separated by carina (Fig. 45); outer side of supra-antennal elevations subvertical, largely smooth, and elevations about 0.8 times as long as scapus (Fig. 45); frons moderately punctate (Fig. 46); supra-antennal elevations largely ivory dorsally (Fig. 45); mandible mainly dark brown, except ivory basal patch and pale brown base of teeth (Fig. 46); metasoma dorsally largely smooth and largely black (Figs 39, 43); first tergite about 0.6 times as long as its apical width (Fig. 43); third sternite about 0.4 times as long as second sternite (Fig. 44). Close to J. satoi (Tsuneki) from Taiwan and J. mandibularis from Shaanxi, from which the new species differs because of the largely smooth supra-antennal elevations (with carinae or long grooves and some punctures in J. satoi and J. mandibularis ), the densely rugose and rather matt scutellum (largely smooth and shiny), the scutellum somewhat above level of metanotum in lateral view and medially flattened (protruding far above level of metanotum and medially slightly longitudinally depressed), the mandible largely dark brown (largely pale brown and yellowish or ivory); the inner orbita of eye completely ivory (largely dark brown or with incomplete ivory stripe), and the middle lobe of mesoscutum with pair of ivory patches anteriorly (entirely black).

Description.

Holotype, ♀, length of body 8.7 mm (of fore wing 7.1 mm).

Head. Antenna with 25 segments; frons moderately punctate with smooth interspaces wider than punctures (Fig. 46), with medium-sized whitish setae; vertex smooth, but remotely punctulate (Fig. 45); temple largely smooth, punctulate, but near mandible punctate (Fig. 47); head hardly narrowed behind eyes, eye in dorsal view 1.2 times as long as temple (Fig. 45); occipital carina strongly widened and pair of circular lamellae medio-dorsally, separated by distinct carina (Figs 41, 45), laterally distinctly crenulated; supra-antennal elevations distinctly enlarged (about 0.8 times as long as scapus), largely smooth (except some punctures) and outer side subvertical; clypeus concave and thick medio-ventrally and area above it convex and obtusely protruding (Fig. 46).

Mesosoma. Length of mesosoma 1.7 times its height (Fig. 42); mesopleuron antero-dorsally spaced rugose, dorso-posteriorly with some fine striae and remainder smooth and shiny, and antero-ventrally curved rugulose; notauli rather narrow, but deep and coarsely crenulate; middle lobe of mesoscutum transversely rugulose and with some punctures in between, lateral lobes mainly punctate except for a smooth line (Fig. 41); scutellar sulcus wide and coarsely crenulate; scutellum remotely coarsely punctate and laterally with rugae, flattened, in lateral view somewhat above level of metanotum (Fig. 39); metanotum medially evenly convex, shiny and largely smooth (Fig. 41); propodeum antero-laterally irregularly rugose or rugulose and interspaces more or less coriaceous, matt, remainder coarsely transversely rugose and shiny medially, and smooth posteriorly (Fig. 41); posterior propodeal carina thick lamelliform (foramen about 4 times as wide as high medially).

Wings. Fore wing: length of vein 1-M 1.5 times as long as vein 1-SR; third submarginal cell much wider anteriorly than petiolate second cell (Fig. 40).

Metasoma. First tergite 0.6 times as long as its apical width, smooth but basal depression anteriorly with some crenulae (Fig. 43); second and following tergites smooth except for punctulation and shiny; sternites rather densely finely punctate, with wide smooth interspaces; second sternite weakly curved in lateral view; third sternite about 0.4 times as long as second sternite (Fig. 44); hypopygium triangularly protruding in ventral view (Fig. 44).

Colour. Black; inner orbita narrowly ivory and connected to ivory malar space; pair of patches on clypeus, basal patch of mandible, large patch on supra-antennal elevations, pair of elongate patches on middle lobe of mesoscutum anteriorly, pair of narrow lines near tegulae, pair of small patches on metanotum medially, epipleura of first tergite, large patch apico-laterally on second tergite and narrow apical bands of sternites ivory; 12 th– 22nd antennal segments largely pale brown ventrally; mandible largely dark brown but teeth light brown basally (Figs 46); tegulae and trochanters mainly dark brown; palpi rather dark brown; legs blackish or dark brown, but fore femur apico-ventrally and tibia ventrally yellowish; pterostigma basally yellow, and remainder dark brown; basal half of marginal cell and to a lesser degree area below it dark brown and remainder of wing membrane subhyaline (Fig. 40).

Variations. Length of body 8.7-10.2 mm, of fore wing 7.1-8.1 mm; antenna of ♀ with 25(2) or 27(1) segments; metanotum black or with pair of ivory spots medially; ivory patches of clypeus and mesoscutum rather small to large; mesoscutum sometimes with minute ivory spot medio-posteriorly; second submarginal cell of fore wing petiolate or sessile anteriorly; length of vein 1-M of fore wing 1.5-1.7 times as long as vein 1-SR; pterostigma largely yellowish brown or largely dark brown; mandible dark brown or ivory subbasally; whitish setae of mesosoma long or medium-sized.

Male. Unknown.

Biology.

Unknown.

Distribution.

China (Shaanxi). Collected at 1300-1500 m.

Etymology.

Named after the province Shaanxi, where it was collected.