Iphiaulax longinervis Li & Achterberg & Chen 2020, sp. nov.
Creators: name: Li, Yang
name: Achterberg, Cornelis Van
name: Chen, Xue-Xin
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Iphiaulax
Iphiaulax longinervis

description: Iphiaulax longinervis sp. nov.
Figs 37–38
Type material. Holotype. CHINA • ♀; Yunnan Province, Xishuangbanna Xiaomengyang; 850m; 18 Aug.1957; Y. R. Zhang leg.; IZCAS IOZ (E)1964515. Paratype. CHINA • 1♀; Yunnan Province, near Jingdong; 1300m; 17 Mar. 1957; Bangfeiluofu leg.; IZCAS IOZ (E) 1964595.
Diagnosis. This new species is very similar to I. agraensis Cameron, 1897, but can be separated from the latter by the following characters: head yellow with black dorsal marking not reaching eye orbits (reaching eye orbits in I. agraensis); metasomal tergites uniformly black (uniformly yellow); hind leg mainly black (yellow); hind wing vein 1r-m 1.1–1.2 × as long as vein SC+R1 (0.9 ×).
Description. Holotype, ♀, length of body 15.8 mm, of fore wing 14.0 mm, of ovipositor sheath 2.0 mm.
Head. Antenna with 94 antennomeres; apical flagellomere acute, 2.8 × longer than its maximum width (Fig. 38l); first flagellomere 0.9 × longer than its maximum width, 1.2 and 1.3 × longer than second and third, respectively, the latter 0.8 × longer than its maximum width; malar suture developed and densely short setose (Fig. 38i); clypeus height: inter-tentorial distance: tentorio-ocular distance = 4: 9: 7; clypeus sparsely short setose; eye weakly emarginated (Fig. 38g); width of hypoclypeal depression twice its height; face 0.7 × longer than wide, largely smooth, with some punctures and long setae (Fig. 38g); eye height: shortest distance between eyes: head width = 17: 21: 40; frons smooth, weakly concave behind antennal sockets, with a strong median groove (Fig. 38h); vertex largely glabrous except for some sparse short setae; minimum distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: minimum distance between posterior ocellus and eye = 4: 3: 10; in dorsal view length of eye 1.9 × temple (Fig. 38h).
Mesosoma. Length of mesosoma 2.1 × its height (Fig. 38c); notauli only impressed anteriorly (Fig. 38d); middle lobe of mesoscutum weakly convex; mesoscutum largely glabrous, but with some short setae along notauli (Fig. 38d); scutellar sulcus narrow, with a few rather weak crenulae (Fig. 38d); scutellum with dense short setae posteriorly; metanotum strongly convex medially (Fig. 38d); propodeum glabrous medially, without medio-longitudinal carina or groove, sparsely punctate and densely long setose laterally (Fig. 38d).
Wings. Fore wing (Fig. 38a): pterostigma 3.9 × longer than wide; SR1: 3-SR: r = 5: 4: 1; 1-SR+M more or less straight; 2-SR: 3-SR: r-m = 7: 20: 9; angle between 1-SR and C+SC+R about 80°; cu-a postfurcal, nearly not oblique anteriorly. Hind wing (Fig. 38b): SC+R1: 2-SC+R: 1r-m = 17: 4: 21.
Legs. Length of fore femur: tibia: tarsus = 20: 24: 29; length of hind femur: tibia: basitarsus = 32: 55: 14; length of femur, tibia and basitarsus of hind leg 2.3, 6.9 and 3.5 × their maximum width, respectively; hind tibial spurs 0.3 and 0.5 × as long as hind basitarsus.
Metasoma. Length of first metasomal tergite 1.3 × its apical width, median area convex and with longitudinal striae, medio-longitudinal carina present, but not reaching posterior margin of first tergite, lateral grooves sparsely crenulate (Fig. 38j); second tergite largely longitudinally striate, but antero-lateral and posterior areas smooth (Fig. 38e); apical width of second tergite 1.1 × its median length, anterior grooves crenulate (Fig. 38e); second suture wide and deep, crenulate, nearly straight medially (Fig. 38e); third tergite with antero-lateral areas; third–fifth tergites without subposterior groove (Fig. 38e); third–seventh tergites smooth; fourth–seventh tergites densely setose laterally and posteriorly; ovipositor sheath 0.14 × as long as fore wing.
Colour. Head and mesosoma largely yellow (Fig. 37); antenna, mandible apically, frons medially (Fig. 38g), area surrounding stemmaticum and temple posteriorly black (Fig. 38h); metapleuron ventrally (Fig. 38c), middle lobe and lateral lobes of mesoscutum with a black spot (Fig. 38d); propodeum brown(Fig. 38d); fore and middle legs yellow, hind leg black (Fig. 38f); metasoma and ovipositor sheath black (Figs 37, 38e); wing membrane yellow, but dark brown apically, fore wing with irregular dark brown stigmal spot up to vein CU1b, and a dark brown spot around posterior half of vein 2-1A, including dark brown veins 1-SR, 1-SR+M, m-cu and 3-CU1 and apically wings with wide dark brown area; pterostigma and remainder of veins yellow (Figs 38a, 38b).
Variation. Length of body of female 13.1–15.8 mm, of fore wing of female 12.4–14.0 mm, and of ovipositor sheath 2.0–4.0 mm; antenna of female with 90 antennomeres; length of mesosoma 2.0 × its height; fore wing vein 1r-m 1.1 × as long as vein SC+R1; ovipositor sheath 0.14–0.32 × as long as fore wing; propodeum black; hind tibia and tarsus infuscate.
Biology. Unknown.
Distribution. China (Yunnan).
Etymology. Named after the relatively long vein 1r-m of the fore wing: “longus” and “nervis” is Latin for “long” and “sinew, vein”, respectively.
description: Published as part of Li, Yang, Achterberg, Cornelis Van & Chen, Xue-Xin, 2020, Two genera Campyloneurus Szépligeti and Iphiaulax Foerster in China, with the descriptions of fourteen new species (Hymenoptera, Braconidae, Braconinae), pp. 1-67 in Zootaxa 4884 (1) on pages 53-55, DOI: 10.11646/zootaxa.4884.1.1, http://zenodo.org/record/4296207