Orthogonalys paraclypeata 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 : 35-38

Orthogonalys paraclypeata Tan & van Achterberg sp. n. Figs 60-61, 62-70, 71-79

Type material.

Holotype, ♀ (NWUX), "NW China: Shaanxi, Lower Changqing Re[ser]v[e], Shanshuping, 1445 m, 33.67N 107.57E, 18.vi.-17.vii.2016, Y[ellow Malaise] T[rap], Zhao Lin-Peng, NWUX". Paratypes: 1 ♂ (NWUX), same data as holotype; 1 ♀ + 8 ♂ (NWUX, RMNH), "NW China: Shaanxi, Xunyangba, Ningshaan, 1481 m, N 33°54' E 108°55 ', 1.vii.-17.viii.2016, Y[ellow] and G[reen Malaise] Trap, Jiangli Tan/Qingqing Tan, NWUX"; 2 ♀ + 23 ♂ (NWUX, RMNH), id., but Green Malaise trap (except 1 ♀ from black Malaise trap), 20.v.-23.vi.2016; 3 ♂ (NWUX), "NW China: Shaanxi, Ningshaan, from Huangguan to Xunyangba, 1236 m, 33°54'N, 105°36'E, 1.vii.-17.viii.2016, black Mal[aise] trap, J-L Tan & Q-Q Tan, NWUX"; 4 ♂ (NWUX), id., but 20.v.-20.vi.2016; 2 ♂ (NWUX), "NW China: Shaanxi, Huanghualing, Zhashui, 1408 m, 20.v.-1.vii.2016, 33°80'N, 108°88'E, yellow [Malaise] trap, J-L Tan & Q-Q Tan, NWUX".

Diagnosis.

Antenna without subapical ivory band (Figs 60, 61); occipital carina rather narrow and sparsely crenulate dorsally (Fig. 67); frons moderately shiny and largely coarsely punctate (Fig. 68); area behind stemmaticum with some rugae and posteriorly aciculate (Fig. 67); supra-antennal elevations medium-sized and coarsely punctate (Fig. 67); clypeus strongly convex medially, coarsely punctate and medio-ventrally slightly concave (Fig. 68); basal half of mandible ivory; mesoscutum coriaceous-rugulose and anterior pair of smooth stripes inconspicuous (Fig. 64); scutellum coarsely punctate, longitudinally depressed medially and laterally with some longitudinal rugae, and moderately shiny (Fig. 64); mesosoma without pale pattern or spots dorsally (Fig. 64); third submarginal cell 0.4-0.5 times as long as second submarginal cell, but anteriorly much wider than second cell (Figs 61, 62); pterostigma of both sexes dark brown; anterior 0.8-0.9 of first metasomal tergite and anterior half of second tergite black (Fig. 66).

The new species runs in the key to Orthogonalys by Chen et al. (2014) to O. clypeata Chen, van Achterberg, He & Xu, 2014, and differs as follows: mesoscutum coriaceous-rugulose and anterior pair of smooth stripes inconspicuous (densely to remotely punctate and anterior pair of smooth stripes rather conspicuous in O. clypeata ), area behind stemmaticum with some fine rugae and posteriorly aciculate (smooth), frons coarsely punctate (at most moderately punctate and often largely smooth), and pterostigma of ♀ dark brown (largely brownish yellow).

Description.

Holotype, ♀, length of body 9.2 mm (of fore wing 7.6 mm).

Head. Antenna with 22 segments; frons coarsely punctate; vertex largely smooth laterally, but behind stemmaticum with some fine rugae and posteriorly transversely aciculate (Fig. 67); temple smooth (Fig. 63); head gradually narrowed behind eyes, eye in dorsal view 1.3 times as long as temple (Fig. 67); occipital carina rather narrow and sparsely crenulate dorsally (Fig. 67); supra-antennal elevations medium-sized (about half as long as scapus), outer side subvertical and coarsely densely rugose (Fig. 67); clypeus slightly concave medio-ventrally and strongly convex medially (Fig. 68).

Mesosoma. Length of mesosoma 1.5 times its height; mesopleuron below transverse mesopleural groove with some coarse rugae, above groove largely smooth (Fig. 65); transverse mesopleural groove wide, deep and coarsely crenulate; notauli wide, deep and coarsely crenulate; mesoscutum coriaceous-rugulose and anterior pair of smooth stripes of middle lobe inconspicuous, lateral lobe rugulose and with fine punctures (Fig. 64); scutellar sulcus wide and coarsely crenulate; scutellum coarsely punctate, medially shallowly longitudinally depressed and laterally with some longitudinal rugae (Fig. 64); metanotum medially distinctly convex, smooth and shiny but anteriorly rugulose (Fig. 64); propodeum shiny and irregularly spaced rugose (Fig. 64); posterior propodeal carina thick lamelliform and hardly arched, foramen medially 0.3 times higher than wide basally.

Wings. Fore wing: length of vein 1-M 2.2 times as long as vein 1-SR (Fig. 62); second submarginal cell twice as long as third cell.

Metasoma. First tergite 0.8 times as long as its apical width, smooth and with pair of small depressions medially (Fig. 66); metasoma smooth, but first sternite partly superficially coriaceous (Fig. 69); third sternite about 0.7 times as long as second sternite (Fig. 69); hypopygium triangular (Figs 60, 69).

Colour. Black; palpi and tegulae pale yellow; inner orbita (except dorsally) ivory and connected to broadly ivory malar space; basal half of mandible ivory, apical half pale brown, but teeth dark brown; apical quarter of antenna brownish ventrally; first tergite latero-posteriorly, apical half of second tergite (and medio-anteriorly protruding into black area), pair of large triangular spots on third tergite latero-posteriorly, first sternite laterally, second sternite and fourth sternite laterally and medially yellow (Fig. 69); hind trochanter and trochantellus white; coxae and hind femur black; fore and middle trochanters, base of femora, hind tibia and tarsus dark brown; remainder of legs yellowish brown; pterostigma dark brown; wing membrane subhyaline.

Variations. Length of body 7.1-9.2 mm, of fore wing 5.8-7.6 mm; antenna with 22(1) or 23(1) segments.

Male. Length of body 5.6-10.8 mm, of fore wing 5.9-8.6 mm; antenna with 21(2), 22(15), 23(12), 24(2) segments, apical quarter of antenna brownish ventrally or most of antenna brown; frons densely and coarsely punctate-rugose; clypeus usually entirely black, but sometimes partly or entirely ivory (as in O. clypeata ); mesoscutum often less distinctly transversely rugose than in females; metasoma darker than of female, dorsally largely black (only apical margin of tergites brownish) but first sternite laterally, second sternite laterally and medio-posteriorly (or brownish yellow with pair of elongate dark patches) and third sternite partly or entirely brownish yellow, but sometimes entirely dark brown; paramere (Figs 61, 75) smaller than of O. clypeata .

Biology.

Unknown.

Distribution.

China (Shaanxi).

Etymology.

Named “paraclypeata” because it is similar to O. clypeata and “para” is Greek for “near”.