Dolichogenidea flexisulcus Liu & He & Chen & Gupta & Moghaddam 2019, sp. nov.
Creators: name: Liu, Zhen
name: He, Jun-Hua
name: Chen, Xue-Xin
name: Gupta, Ankita
name: Moghaddam, Mostafa Ghafouri
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea flexisulcus

description: Dolichogenidea flexisulcus Liu & Chen, sp. nov.
(Figs 22, 67)
Description. Holotype. Female. Body length 2.0 mm, fore wing length 2.3 mm.
Head. Transverse in dorsal view, 1.9× as wide as long, as wide as mesoscutum (Fig. 22f). Temple shiny with shallow punctures, weakly constricted behind eyes from dorsal view. Face (Fig. 22d) transverse, 0.8× as high as wide, shiny, with shallow punctures, inner margins of eyes distinctly, but not strongly, constricted posteriorly. Ocelli small, posterior tangent to anterior ocellus virtually touching posterior pair of ocelli, distance between fore and a hind ocellus a little longer than diameter of an hind ocellus, POL:OD:OOL = 3.0:1.5:4.0. Antenna weakly longer than body length, penultimate antennomere 1.7× longer than wide.
Mesosoma. Length:width:height = 35.0:22.0:25.0. Disc of mesonotum (Fig. 22h) shiny, with large, dense punctures. Scutellar sulcus strongly curved, narrow with carinae inbetween. Scutellum shiny, with sharp, relatively dense punctures. Propodeum (Fig. 22e) shiny, with well-defined areolation which opened at anterior end, three posterior fields highly shiny and polished, with hairy shallow punctures anterio-laterally. Mesopleuron highly polished, anterior part sharply, sparsely punctate.
Legs. Hind coxa shiny, with shallow punctures. Spines on outer side of hind tibia acuminated, dispersed. Inner spur of hind tibia 2/5 length of hind basitarsus, outer spur 1/3 length of hind basitarsus. Basitarsus of hind leg a little shorter than tarsomeres 2–4 (12.0:14.0).
Wings. Pterostigma 2.3× as long as its widest part (Fig. 22b). Vein 1-R1 1.3× longer than pterostigma, 5.5× as long as its distance from apex of marginal cell. Vein r arising from apex of pterostigma, perpendicular to the latter, and 0.7× as long as width of it, r as long as to weakly longer than 2-SR, angled at meeting, 2-M half length of 2-SR and weakly longer than 1-SR and shorter than 2-SR+M, m-cu slightly longer than r. First discal cell of fore wing 1.2× wider than high. Second discal cell of hind wing 1.8× wider than high. Vein cu-a strongly curved (Fig. 22c).
Metasoma. As long as mesosoma. T1 (Fig. 22g) weakly widened towards apex, indistinctly constricted posteriorly, 1.3× longer than hind width, basal 1/3 indistinctly concave, rugulose, turned-over part quadrate, uneven with distinct rugae. T2 weakly striate, 3× wider than long in middle, weakly curved apically. T3 nearly 1.4× longer than T2. Tergites posterior to T2 polished, shiny, and densely pubescent. Hypopygium distinctly shorter than apex of metasoma. Ovipositor sheath 0.9× as long as hind femur, thin and parallel-sided.
Colour. Black (Fig. 22a). Tegula brown. Palpi and spurs whitish. Antenna yellowish brown. Ovipositor sheath brown. Labrum reddish brown and mandible reddish yellow. Fore leg, posterior half of mid femur, mid tarsus, apex of hind femur and basal half of hind tibia yellow, other parts infuscate to dark brown. Wing membrane hyaline, vein 1-R1, pterostigma and apical C+SC+R yellowish brown, basal C+SC+R, r, 2-SR, and 2-M whitish yellow, and other alar veins colourless, pterostigma without whitish basal spot.
Variation. Body length 2.0– 2.5 mm, fore wing length 2.3–2.6 mm. T2 of specimens from Jiangsu slightly uneven with sparse punctures.
Male. Body length 1.9–2.0 mm, fore wing length 2.1–2.3 mm. Similar to female, except: pterostigma whitish with dark border and penultimate antennomere 2.3× longer than wide.
Material examined (ZJUH). Holotype: ♀, Songyang, Zhejiang, 1989.VI.16, He Junhua, ex a larva of Zygaenidae, No. 893623. Paratypes: 17 ♀♀ 13 ♂♂, same data as holotype; 4 ♀♀ 1 ♂, Guangzhou, Guangdong, 1982.VII, He Junhua, No. 893623; 3♀♀ 1 ♂, Nanjing, Jiangsu, Peng Quxian, ex Scopelodes contracta Walker, No. 824925.
Distribution. Eastern Palaearctic [China: Jiangsu]; Oriental [China: Guangdong, Zhejiang].
Etymology. The specific name “ flexisulcus ” derived from the Latin “flexus” and “sulcus”, referring to scutellar sulcus strongly curved.
Remarks. This species is similar to D. multicolor Liu & Chen, sp. nov., but differs in the following: pterostigma large, 2.3× as long as its widest part (the latter small, 3.0×); temple weakly constricted behind eyes from dorsal view (the latter strongly constricted); and metasoma as long as mesosoma (the latter distinctly shorter).
description: Published as part of Liu, Zhen, He, Jun-Hua, Chen, Xue-Xin, Gupta, Ankita & Moghaddam, Mostafa Ghafouri, 2019, The ultor - group of the genus Dolichogenidea Viereck (Hymenoptera, Braconidae, Microgastrinae) from China with the descriptions of thirty-nine new species, pp. 1-134 in Zootaxa 4710 (1) on page 50, DOI: 10.11646/zootaxa.4710.1.1, http://zenodo.org/record/3587475