Dolichogenidea obsoleta Liu & Chen, 2019
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publication ID |
https://doi.org/ 10.11646/zootaxa.4710.1.1 |
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publication LSID |
lsid:zoobank.org:pub:DC6FD1A7-ADEA-4631-B4FB-FE1E2DC89777 |
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DOI |
https://doi.org/10.5281/zenodo.5587426 |
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persistent identifier |
https://treatment.plazi.org/id/03AC87CF-E142-FFF4-7FF9-5DF6FB6BDBF4 |
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treatment provided by |
Plazi |
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scientific name |
Dolichogenidea obsoleta Liu & Chen |
| status |
sp. nov. |
Dolichogenidea obsoleta Liu & Chen , sp. nov.
( Figs 46 View FIGURE 46 , 68 View FIGURE 68. 36–60 )
Description. Holotype. Female. Body length 2.0 mm, fore wing length 2.2 mm.
Head. Transverse in dorsal view, nearly 2.3× as wide as long, as wide as mesoscutum ( Fig. 46h View FIGURE 46 ). Temple a little shiny with shallow punctures, strongly constricted behind eyes from dorsal view. Face ( Fig. 46g View FIGURE 46 ) transverse, 0.7× as high as wide, a little shiny, impunctate and a little rough, inner margin of eyes indistinctly converged posteriorly. Hind ocelli larger than anterior one, posterior tangent to anterior ocellus virtually touching posterior pair of ocelli, distance between fore and a hind ocellus weakly larger than diameter of an hind ocellus, POL:OD:OOL = 3.0:1.5:3.5. Antenna not longer than body, penultimate antennomere 1.7× longer than wide.
Mesosoma. Length:width:height = 35.0:23.0:25.0. Disc of mesonotum ( Fig. 46d View FIGURE 46 ) shiny, posterior half polished and with sparse, discrete punctures (interspaces one to two diameters of punctures), punctures widely absent along posterior margin and median part before posterior margin. Scutellar sulcus weakly evenly curved, narrow with dense carinae inbetween. Scutellum highly shiny and polished. Propodeum ( Fig. 46i View FIGURE 46 ) shiny, with well-defined areolation which open at anterior end, lateral carinaelateral carinae of areola bifurcated medially, costulae well-defined, three posterior fields polished and smooth, spiracle separated from junction of costula and lateral propodeal keel by more than twice of its longer diameter and indistinctly punctate anterio-laterally. Mesopleuron highly polished and with sparse, shallow punctures anteriorly.
Legs. Spines on outer side of hind tibia thick and short. Spurs of hind tibia very short, inner spur 2/5 length of hind basitarsus, outer spur less than 1/3 length of hind basitarsus. Basitarsus of hind leg shorter than tarsomeres 2–4 (12.0:14.0).
Wings. Pterostigma relatively large, 2.7× as long as its widest part ( Fig. 46b View FIGURE 46 ). Vein 1-R1 1.2× longer than pterostigma, 4.6× as long as its distance from apex of marginal cell. Vein r arising from middle of pterostigma, perpendicular to pterostigma, weakly shorter than width of pterostigma, r slightly longer than vein 2-SR, weakly angled at meeting, 2-M half length of 2-SR and nearly as long as 1-SR, 2-SR+M as long as 2-M, m-cu as long as r. First discal cell of fore wing almost as wide as high. Second discal cell of hind wing nearly 2.0× wider than high. Vein cu-a strongly incurved ( Fig. 46c View FIGURE 46 ).
Metasoma. Weakly shorter than mesosoma (33.3:35.0). T1 ( Fig. 46f View FIGURE 46 ) parallel-sided, distinctly constricted posteriorly, 1.5× longer than hind width, basal third indistinctly concave and weakly rugose, turned-over part a little transverse, rugose in middle but faded to apex, with an indistinct short medio-longitudinal carina anterio-medially. T2 shiny, nearly smooth except weakly strigose at anterior and posterior sides and some shallow punctures, 3.6× wider than long in middle, weakly evenly curved apically. T3 1.4× as long as T2. Tergites posterior to T2 highly polished, and shiny. Hypopygium distinctly shorter than apex of metasoma. Ovipositor sheath slightly longer than hind basitarsus (13.5:11.5), thin, broadened at apex, ovipositor straight, short and parallel-sided.
Colour. Black ( Fig. 46a View FIGURE 46 ). Tegula dark. Palpi and spurs whitish. Antenna yellowish brown and ovipositor sheath brown. Labrum reddish brown and mandible more yellowish. Coxae black and femora infuscate, tibiae and tarsi bright reddish yellow. Wing membrane hyaline, distinctly brownish, vein 1-R1, C+SC+R, pterostigma, and other alar veins yellowish brown.
Male. Body length 2.2–2.3 mm, fore wing length 2.2–2.6 mm. Similar to female, except: antenna much longer than body, with penultimate antennomere 2.4× longer than wide; T1 much longer, nearly 2.0× longer than hind width; and T2 2.7× wider than long in middle.
Material examined ( ZJUH). Holotype: ♀, Nanshan, Zhejiang, 1982.VI.5, Xu Tiansheng , ex. Cosmopterix phllostachysae Kuroko, No. 826815 . Paratypes: 5♂♂, same data as holotype .
Distribution. Oriental [ China: Zhejiang].
Etymology. The specific name “ obsoleta ” derived from the Latin adjective “obsoletus”, referring to punctures on disc of mesonotum sparse to disapeared apically.
Remarks. This species is similar to D. acratos (Nixon) , but differs in the following: anterior part of mesopleurum sparsely, finely punctate (the latter coarsely rugose); posterolateral area almost polished (the latter with a considerable amount of coarse rugosities); and spiracle on propodeum separated from junction of costula and lateral propodeal keel by more than twice of its longer diameter (the latter as long as its longer diameter).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.