Dolichogenidea lobesia Liu & Chen, 2019

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, Zootaxa 4710 (1), pp. 1-134 : 77

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Dolichogenidea lobesia Liu & Chen

sp. nov.

Dolichogenidea lobesia Liu & Chen , sp. nov.

( Figs 37 View FIGURE 37 , 68 View FIGURE 68. 36–60 )

Description. Holotype. Female. Body length 2.3 mm, fore wing length 2.5 mm.

Head. Transverse in dorsal view, 2.0× as wide as long, as wide as mesoscutum ( Fig. 37h View FIGURE 37 ). Temple dull with indistinct punctures, weakly constricted behind eyes from dorsal view. Face ( Fig. 37g View FIGURE 37 ) nearly quadrate, 0.9× as high as wide, a little shiny, with minute punctures, inner margins of eyes distinctly, but not strongly, converged towards apex. Ocelli small, posterior tangent to anterior ocellus just before posterior pair of ocelli, distance between fore and a hind ocellus as long as diameter of an hind ocellus, POL:OD:OOL = 3.4:1.7:4.0. Antenna a little shorter than body length, penultimate antennomere nearly 1.5× longer than wide.

Mesosoma. Length:width:height = 40.0:23.0:23.5. Disc of mesonotum ( Fig. 37b View FIGURE 37 ) a little shiny, with small, sparse punctures on posterior half, punctures on medio-posterior parts and parts along apical margin tending to disappear. Scutellar sulcus weakly curved, very narrow with carinae inbetween. Scutellum a little rough with several minute punctures. Propodeum ( Fig. 37d View FIGURE 37 ) shiny, with well-defined pentagonal areolation which open at at anterior end and margins of areolation very narrow, three posterior fields highly shiny and almost polished, medio-anterior parts punctate-rugose, lateral-anterior parts with indistinct punctures. Mesopleuron highly polished, anterior part with superficial, sparse punctures.

Legs. Hind coxa shiny and polished. Spines on outer side of hind tibia sparse. Inner spur 2/5 length of hind basitarsus, outer spur nearly 1/3. Basitarsus of hind leg a little shorter than tarsomeres 2–4 (13.5:15.5).

Wings. Pterostigma 2.8× as long as its widest part ( Fig. 37c View FIGURE 37 ). Vein 1-R1 nearly 1.5× longer than pterostigma, it almost closing marginal cell. Vein r arising from middle of pterostigma, r curved with 2-SR at meeting, 2-M as long as 2-SR+M and weakly longer than 1-SR, m-cu nearly as long as width of pterostigma. First discal cell of fore wing weakly wider than high (17.0:15.0). Second discal cell of hind wing indistinct, 1.6× wider than high. Vein cu-a strongly curved.

Metasoma. As long as mesosoma. T1 ( Fig. 37f View FIGURE 37 ) parallel-sided to weakly widened, 1.4× longer than hind width, basal 1/3 concave, weakly striate laterally, turned-over part quadrate, strongly longitudinally striate, apical tubercle polished. T2 weakly longitudinally striate, with a row of shallow punctures apically, 3.0× wider than long in middle, strongly curved apically. T3 1.5× longer than T2. Tergites posterior to T2 shiny, polished and with minute hairy punctures. Hypopygium not longer than apex of metasoma. Ovipositor sheath ( Fig. 37e View FIGURE 37 ) 1.4× as long as length of hind tibia, thin and parallel-sided. Ovipositor thin, weakly curved apically, taped towards apex.

Colour. Black, tergites posterior to T2 dark brown ( Fig. 37a, f View FIGURE 37 ). Tegula dark brown. Palpi whitish yellow and spurs whitish. Antenna and ovipositor sheath dark brown. Labrum and mandible brown. Legs brown to black, except apical half of fore femur, fore tibia, fore tarsus, apex of mid femur, basal 1/3 of mid tibia, mid tarsus, and basal 1/3 of hind tibia dirty yellow. Wing membrane hyaline, vein 1-R1, C+SC+R, and upper border of pterostigma dark brown, pterostigma light honey yellow with whitish basal spot, vein r, 2-SR and 2-M light honey yellow, other alar veins whitish yellow.

Variation. Body length 2.3–2.4 mm, fore wing length 2.5–2.7 mm.

Male. Body length 2.0– 2.2 mm, fore wing length 2.3–2.5 mm. Similar to female, except: T1 much longer, 2.2× longer than hind width; T2 longer, 2.5× wider than long in middle; and antenna a little longer than body length, penultimate antennomere nearly 2.5× longer than wide.

Material examined ( ZJUH). Holotype: ♀, Kunming , Yunnan, 1983.V.18, Yang Guang, ex Lobesia incystata Liu & Yang, No. 833830 . Paratypes: 4♀♀ 4♂♂, same data as holotype .

Distribution. Oriental [ China: Yunnan].

Etymology. The specific name “ lobesia ”, referring to that it is parasitoid of larva of Lobesia incystata Liu & Yang.

Remarks. This species is similar to D. miris Nixon , but differs in the following: punctuation of the mesoscutum relatively sparse and dispersed (the latter tending to be contiguous along imaginary course of notauli); T2 distinctly less rugose than T1 (the latter as rugose as T1); and costula strongly defined (the latter very poorly defined).