Dolichogenidea crassa Liu & He & Chen & Gupta & Moghaddam 2019, sp. nov.

Dolichogenidea crassa Liu & Chen, sp. nov.

(Figs 18, 67)

Description. Holotype. Female. Body length 2.3 mm, fore wing length 2.7 mm.

Head. Transverse in dorsal view, 2.0× as wide as long, nearly 0.9× as wide as mesoscutum (Fig. 18d). Temple shiny with dense punctures, not constricted behind eyes from dorsal view. Face (Fig. 18e) transverse, 0.8× as high as wide, shiny with large, dense punctures, inner margins of eyes subparallel. Ocelli relatively large, posterior tangent to anterior ocellus touching posterior pair of ocelli, distance between fore and a hind ocellus a little shorter than diameter of an hind ocellus, POL:OD:OOL = 3.0:2.0:4.0. Antenna weakly shorter than body length, penultimate antennomere 1.5× longer than wide.

Mesosoma. Length:width:height = 40.0:26.0:27.0. Disc of mesonotum (Fig. 18h) shiny with sharp, dense punctures. Scutellar sulcus weakly curved, narrow with sparse carinae inbetween. Scutellum shiny, polished except several punctures laterally. Propodeum (Fig. 18c) shiny, with well-defined areolation which open at at anterior end and strongly bifurcated into small areolae lateral-medially, three posterio-lateral fields shiny and nearly polished, lateral-anterior parts shiny with strong, irregular punctures. Mesopleuron highly polished, anterior part with sharp, relatively dense punctures.

Legs. Hind coxa shiny with indistinct hairy punctures. Spines on outer side of hind tibia long, dispersed. Inner spur 2/5 length of hind basitarsus, outer spur 1/3. Basitarsus of hind leg weakly shorter than tarsomeres 2–4 (15.0:16.0).

Wings. Pterostigma 2.7× as long as its widest part (Fig. 18b). Vein 1-R1 nearly 1.3× longer than pterostigma, 4.2× as long as its distance from apex of marginal cell. Vein r arising from middle of pterostigma, perpendicular to pterostigma, as long as width of pterostigma, 1.2× longer than 2-SR, distinctly angled with 2-SR at meeting, 2- M 2/3 length of 2-SR and indistinctly longer than 1-SR and as long as 2-SR+M, m-cu nearly as long as width of pterostigma. First discal cell of fore wing as wide as high. Second discal cell of hind wing 1.7× wider than high. Vein cu-a strongly curved (Fig. 18g).

Metasoma. As long as mesosoma. T1 (Fig. 18f) parallel-sided, 1.1× longer than hind width, basal 1/3 concave, weakly rugulose laterally, turned-over part transverse, strongly punctate-rugose, longitudinally striate apical-laterally. T2 nearly rugose as T1 and coarsely punctate, 3.6× wider than long in middle, weakly curved apically. T3 1.3× longer than T2. Tergites posterior to T2 shiny, polished and pubescent. Hypopygium not longer than apex of metasoma. Ovipositor sheath 1.3× length of hind tibia, thin and nearly parallel-sided. Ovipositor thin, evenly taped apically.

Colour. Black (Fig. 18a). Tegula brown. Palpi and spurs light brown. Antenna and ovipositor sheath dark brown. Labrum and mandible light reddish brown, apices of mandible light reddish yellow. Hind femur (except apex bright reddish yellow) and coxa black, for and mid coxae, trochanters, basal half of mid femur, apical 1/3 of hind tibia and hind tarsus infuscate, fore femur, fore tibia, fore tarsus, apical half of mid femur, mid tibia, mid tarsus, basal 2/3 of hind tibia bright reddish yellow. Wing membrane hyaline, vein 1-R1, apical C+SC+R, and upper border of pterostigma brown, basal C+SC+R, pterostigma, r, 2-SR and 2-M light yellowish brown, other alar veins more or less colourless, pterostigma basally weakly whitish.

Male. Body length 2.5 mm, fore wing length 2.8 mm. Similar to female, except: antenna distinctly longer than body length, penultimate antennomere 2.3× longer than wide; appearance of T1 and T2 less rugose; and several strong punctures present inside areolation.

Material examined (ZJUH). Holotype: ♀, Beizheng, Shandong, 1998.V.31, Ma Zhenquan, ex Matsumuraeses phaseoli Matsumura, No. 820378. Paraype: 1♂, same data as holotype.

Distribution. Eastern Palaearctic [China: Shandong].

Etymology. The specific name “ crassa ”, referring to T1 and T2 with many large coarse punctures.

Remarks. This species is similar to D. carborugosa Liu & Chen, sp. nov., but differs in the following: lateral carinae of areolation on propodeum strongly bifurcated medially (the latter not); scutellar sulcus with sparse carinae (the latter dense); and inner spur of hind tibia less than half (2/5) length of hind basitarsus (the latter 3/5).