Campyloneurus nigriventris 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
Campyloneurus
Campyloneurus nigriventris

description: Campyloneurus nigriventris sp. nov.
Figs 13–14
Type material. Holotype. CHINA • ♀; Yunnan Province, Ruili Mengxiu; 2 to 6 May 1981; J.H. He leg.; ZJUH 813089. Paratypes. CHINA • 1♀; Yunnan Province, Xishuangbanna Yunjinghong; 650m; 5 Aug. 1959; X.Z. Zhang leg.; IZCAS IOZ (E) 1964630 • 1♀; ibid.; but from Damenglong; 650m; 8 Apr. 1958, Y. R. Zhang leg.; IZCAS IOZ (E) 1964579.
Diagnosis. This new species is very similar to C. latesuturalis Turner, 1919, but can be separated from the latter by the following characters: median length of second metasomal tergite distinctly less than its basal width (median length equal to its basal width in C. latesuturalis); scutellum black (reddish brown); fourth and fifth metasomal tergites with longitudinal striae (coarsely punctate); second metasomal tergite with medio-basal triangular area sculptured (smooth); vein 3-SR of fore wing 0.7 × as long as vein SR1 (both of approximately equal length).
Description. Holotype, ♀, length of body 9.0 mm, of fore wing 8.4 mm, of ovipositor sheath 5.3 mm.
Head. Antenna with 47 antennomeres; apical flagellomere acute and protruding apically, 2.1 × longer than its maximum width (Fig. 14l); first flagellomere 1.5 × longer than its maximum width, 1.1 and 1.2 × longer than second and third flagellomeres, respectively, latter 1.2 × longer than wide; malar suture densely short setose, and sculptured (Fig. 14i); clypeus height: inter-tentorial distance: tentorio-ocular distance = 4: 10: 7; clypeus sparsely long setose; eye weakly emarginated (Fig. 14g); face 0.9 × longer than wide, densely long setose, and coarsely sculptured (Fig. 14g); eye height: shortest distance between eyes: head width = 10: 9: 19; frons largely smooth, concave behind antennal sockets, with a strong median groove (Fig. 14h); vertex smooth, with sparse short setae; shortest distance between posterior ocelli: narrower diameter of elliptical posterior ocellus: shortest distance between posterior ocellus and eye = 4: 5: 12; in dorsal view length of eye 1.3 × temple; temples weakly narrowed behind eyes (Fig. 14h).
Mesosoma. Length of mesosoma 1.6 × its height (Fig. 14c); notauli impressed only anteriorly (Fig. 14d); mesoscutum sparsely setose (Fig. 10d); scutellar sulcus deep and with crenulae (Fig. 14d); scutellum densely short setose; metanotum strongly convex medially, and with a short median carina anteriorly (Fig. 14d); propodeum largely smooth, but with a few short longitudinal carinae latero- and medio-posteriorly, sparsely setose medially, and densely long setose laterally (Fig. 14d).
Wings. Fore wing (Fig. 14a): SR1: 3-SR: r = 43: 28: 4; 1-SR+M strongly bent after arising from 1-M; 2-SR: 3SR: r-m = 12: 28: 9; angle between 1-SR and C+SC+R about 85°; r-m rather weakly curved; cu-a weakly postfurcal. Hind wing (Fig. 14b): SC+R1: 2-SC+R: 1r-m = 20: 6: 11.
Legs. Length of fore femur: tibia: tarsus = 27: 34: 39; length of hind femur: tibia: basitarsus = 41: 65: 26; length of femur, tibia and basitarsus of hind leg 5.0, 8.5 and 6.7 × their maximum width, respectively; hind tibial spurs 0.3 and 0.4 × as long as hind basitarsus.
Metasoma. Metasomal tergites largely strongly sculptured (Fig. 14e); length of first tergite 0.9 × its apical width, median area convex and with a branched medio-longitudinal carina (Fig. 14j); first tergite with developed lateral carinae, lateral grooves shallow and crenulate (Fig. 14j); apical width of second tergite twice its median length, triangular medio-basal area of second tergite weakly rugose, attached to medio-longitudinal carina absent near posterior margin of second tergite; antero-lateral areas of second tergite absent, anterior grooves deep and crenulate (Fig. 14e); second suture wide and deep, crenulate, weakly curved medially (Fig. 14e); third–fifth tergites with weak antero-lateral areas, and crenulate transverse subposterior groove (Fig. 14e); sixth and seventh tergites largely smooth; ovipositor sheath 0.6 × as long as fore wing.
Colour. Largely black (Fig. 13); propleuron and mesoscutum reddish yellow (Figs 14c, 14d); sixth and seventh metasomal tergites yellow posteriorly (Fig. 14e); wing membrane smoky grey, pterostigma and veins dark brown (Figs 14a, 14b).
Variation. Length of body 8.6–9.1 mm, of fore wing 8.2–9.1 mm (♀), and of ovipositor sheath 5.3–5.5 mm; antenna of ♀ with 52 antennomere; in dorsal view length of eye 2.0–2.1 × temple; length of mesosoma 1.5–1.6 × its height; propodeum weakly punctate or largely smooth; fore wing vein SR1 1.3–1.5 × as long as vein 3-SR;; apical width of second tergite 2.0–2.5 × its median length; ovipositor sheath 0.6–0.7 × as long as fore wing; mesopleuron somewhat reddish or black anteriorly; propodeum sometimes blackish brown; pterostigma dark brown or yellow.
Biology. Unknown.
Distribution. China (Yunnan).
Etymology. Named after the largely dark metasomal sternites: “niger” and “venter” are Latin for “black” and “belly”, 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 22-25, DOI: 10.11646/zootaxa.4884.1.1, http://zenodo.org/record/4296207