Dolichogenidea hemituba Liu & Chen, 2019
|
publication ID |
https://doi.org/ 10.11646/zootaxa.4710.1.1 |
|
publication LSID |
lsid:zoobank.org:pub:DC6FD1A7-ADEA-4631-B4FB-FE1E2DC89777 |
|
persistent identifier |
https://treatment.plazi.org/id/03AC87CF-E123-FF90-7FF9-5BACFC47DA1C |
|
treatment provided by |
Plazi |
|
scientific name |
Dolichogenidea hemituba Liu & Chen |
| status |
sp. nov. |
Dolichogenidea hemituba Liu & Chen , sp. nov.
( Figs 27 View FIGURE 27 , 67 View FIGURE 67. 21–35 )
Description. Holotype. Female. Body length 2.1 mm, fore wing length 2.6 mm.
Head. Transverse in dorsal view, nearly 2.0× as wide as long, weakly narrower than mesoscutum ( Fig. 27e View FIGURE 27 ). Temple shiny and shallowly punctate, strongly constricted behind eyes from dorsal view. Face ( Fig. 27f View FIGURE 27 ) 0.8× as high as wide, shiny, nearly impunctate, inner margins of eyes distinctly converged posteriorly. Hind ocelli distinctly larger than the anterior one, posterior tangent to anterior ocellus virtually touching posterior pair of ocelli, distance between fore and a hind ocellus as long as diameter of an hind ocellus, POL:OD:OOL = 3.5:2.0:4.5. Antenna slightly longer than body, penultimate antennomere 1.4× longer than wide.
Mesosoma. Length:width:height = 35.0:23.8:24.0. Disc of mesonotum ( Fig. 27g View FIGURE 27 ) shiny, with strong punctures which becoming denser and larger towards apex. Scutellar sulcus straight, broad with carinae inbetween. Scutellum shiny, with small shallow punctures. Propodeum ( Fig. 27d View FIGURE 27 ) shiny, with well-defined areolation which open at anterior end, costulae well-defined, three posterior fields polished, anterio-lateral parts more or less smooth, indistinctly punctate. Mesopleuron highly polished, with shallow fine punctures anteriorly.
Legs. Spines on outer side of hind tibia thin and long. Inner spur of hind tibia half of hind basitarsus, outer spur 2/5 length of hind basitarsus. Basitarsus of hind leg weakly shorter than tarsomeres 2–4.
Wings. Pterostigma 3.3× as long as its widest part ( Fig. 27b View FIGURE 27 ). Vein 1-R1 weakly longer than pterostigma, 5.3× as long as its distance from apex of marginal cell. Vein r arising from middle of pterostigma, perpendicular to pterostigma, 1.3× as long as width of pterostigma, r 1.8× longer than vein 2-SR, distinctly angled at meeting, 2-M 4/5 of 2-SR and longer than 1-SR, 2-SR+M nearly as long as 2-SR, m-cu a little shorter than r. First discal cell of fore wing as wide as high. Second discal cell of hind wing 1.4× wider than high. Vein cu-a incurved ( Fig. 27c View FIGURE 27 ).
Metasoma. Nearly as long as mesosoma. T1 ( Fig. 27h View FIGURE 27 ) parallel-sided, weakly broad before apex, 1.3× longer than hind width, basal third indistinctly concave and weakly rugose, turned-over part quadrate, shiny with irregular short rugae besides the more or less distinct medio-longitudinal carina. T2 weakly evenly curved apically, weakly strigose, 3.8× wider than long in middle. T3 1.7× as long as T2. Tergites posterior to T2 highly polished, and shiny. Hypopygium not longer than apex of metasoma. Ovipositor sheath shorter than hind basitarsus (8.0:12.5), setae sparse and few, ovipositor straight, short, apical attenuation as long as the thickened, basal part and 1/4 length of hind basitatsus.
Colour. Black ( Fig. 27a View FIGURE 27 ). Tegula dark brown. Palpi and spurs whitish. Antenna and ovipositor sheath dark brown. Labrum light reddish brown and mandible more yellowish. Legs yellow to bright reddish yellow, except coxae black and basal half of hind femur darker. Wing membrane hyaline, vein 1-R1, C+SC+ R and upper border of pterostigma brown, pterostigma, r, 2-SR and 2-M light brown and other veins whitish.
Variation. Body length 2.0– 2.3 mm, fore wing length 2.5–2.6 mm. Sometimes hind femur blackish brown dorsally.
Male. Unknown.
Host. Unknown.
Material examined ( ZJUH). Holotype: ♀, Tongledashan, Yunan , Guangdong, 2003.VIII.12–13, Xu Zaifu, No. 20054709 . Paratypes: 3♀♀, Chebaling, Shixing , Guangdong, 2002.V.25, Chen Hanlin, No. 20051146, 20051296, 20051422 ; 1♀, Fengxi, Meizhou , Guangdong, 2003.VII.29, Chen Jujian, No. 20048829 ; 1♀, Chibi, Yongqin , Fu- jian, 2002.IX.19, Li Fangfang, No. 20023114 ; 1♀, Qingyunshan, Yongqin , Fujian, 2002.IX.18, Yu Xiaoxia, No. 20023514 ; 1♀, Meihuashan , Fujian, 1988.VII.23–24, He Junhua, No. 887390 ; 1♀, Suichang , Zhejiang, 1980, Chen Hanlin, No. 810128 .
Distribution. Oriental [ China: Fujian, Guangdong, Zhejiang].
Etymology. The specific name “ hemituba ” derived from the Latin adjective “hemi” and “tuba”, referring to its apical attenuation of the ovipositor as long as the thickened, basal part.
Remarks. This species is similar to D. aso (Nixon) , but differs in the following: apical attenuation of ovipositor 1/4 length of hind basitarsus (the latter as long as); penultimate antennomere 1.4× longer than wide (the latter about 2.0×); and hind femur mainly bright reddish yellow (the latter infuscate).
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.