Dolichogenidea vadosulcus 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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persistent identifier |
https://treatment.plazi.org/id/03AC87CF-E161-FFD0-7FF9-5A44FCA0DC90 |
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treatment provided by |
Plazi |
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scientific name |
Dolichogenidea vadosulcus Liu & Chen |
| status |
sp. nov. |
Dolichogenidea vadosulcus Liu & Chen , sp. nov.
( Figs 63 View FIGURE 63 , 69 View FIGURE 69. 61–75 )
Description. Holotype. Female. Body length 2.2 mm, fore wing length 2.6 mm.
Head. Transverse in dorsal view, 2.0× as wide as long, 1.2× as wide as mesoscutum ( Fig. 63e View FIGURE 63 ). Temple slightly shiny with shallow punctures, strongly constricted behind eyes from dorsal view. Face ( Fig. 63d View FIGURE 63 ) transverse, 0.8× as high as wide, a little shiny with independent dense punctures, inner margins of eyes distinctly converged towards apex. Posterior tangent to anterior ocellus virtually touching posterior pair of ocelli, distance between fore and a hind ocellus weakly shorter than diameter of an hind ocellus, POL:OD:OOL = 3.5:2.0:4.0, a shallow sulcus extending from middle ocellus to occiput. Antenna slightly longer than body length, penultimate antennomere 2.0× longer than wide.
Mesosoma. Length:width:height = 36.0:21.0:25.5. Disc of mesonotum ( Fig. 63f View FIGURE 63 ) slightly shiny, with strong, dense, large punctures. Scutellar sulcus nearly straight, broad with carinae inbetween. Scutellum shiny with distinct, dense punctures. Propodeum ( Fig. 63g View FIGURE 63 ) shiny, with less well-defined areolation which V-shaped at bottom and closed at anterior end, lateral carinae of areola bifurcated medially, costulae well-defined, three posterior fields shiny and polished with some rugae, anterio-lateral parts shiny and without punctures. Mesopleuron highly polished, anterior part superficially punctate.
Legs. Hind coxa shiny with shallow punctures. Spines on outer side of hind tibia indistinct. Inner spur of hind tibia 1/3 length of hind basitarsus, outer spur 1/4 length of hind basitarsus. Basitarsus of hind leg weakly shorter than tarsomeres 2–4 (15.0:16.0).
Wings. Pterostigma large, 2.5× as long as its widest part ( Fig. 63b View FIGURE 63 ). 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, distinctly inclined outwards, slightly shorter than width of pterostigma, r almost as long as 2-SR, indistinctly angled at meeting, 2-M 4/5 length of 2-SR and distintly longer than 1-SR and as long as 2-SR+M, m-cu almost as long as r. First discal cell of fore wing weakly higher than wide (16.5:15.5). Second discal cell of hind wing 1.5× wider than high. Vein cu-a curved ( Fig. 63c View FIGURE 63 ).
Metasoma. 1.3× longer than mesosoma. T1 ( Fig. 63i View FIGURE 63 ) parallel-sided, weakly widened before hind, 1.8× longer than hind width, basal 1/3 indistinctly concave, rugulose, turned-over part a little longer than wide, strongly rugose, with a longitudinal carina medially, posterior 1/3 longitudinally striate. T2 polished medially, weakly rugulose laterally, 2.3× wider than long in middle, strongly curved apically. T3 1.3× longer than T2. Tergites posterior to T2 polished, shiny, and sparsely pubescent. Hypopygium as long as apex of metasoma. Ovipositor sheath nearly as long as hind tibia (27.0:28.5), thin and parallel-sided, ovipositor relatively thin, apical attenuation distinctly shorter than basal part and 2/3 length of hind basitarsus.
Colour. Black, tergites posterior to T1 reddish brown ( Fig. 63a, i View FIGURE 63 ). Tegula brown. Palpi and spurs whitish. Antenna and ovipositor sheath brown. Labrum brown, mandible yellowish brown. Legs yellow, coxae yellowish brown to reddish brown, more or less testaceous on posterior 2/3 of hind tibia and tarsus. Wing membrane hyaline, vein 1-R1, C+SC+ R and pterostigma brown, r, 2-SR and 2-M yellowish brown, other alar veins almost colourless, pterostigma without whitish basal spot.
Variation. Body length 2.2–2.5 mm, fore wing length 2.6–2.9 mm. Length of apical attenuation of ovipositor varied from nearly as long as to distinctly shorter than basal part of ovipositor.
Male. Unknown.
Host. Unknown.
Material examined ( ZJUH). Holotype: ♀, Sanmuping, Mt. West Tianmu , Zhejiang, 1998.VII.30, Zhao Min- gyong, No. 999209 . Paratypes: 1♀, Nonggang, Longzhou , Guangxi, 1982.V.19, He Junhua, No. 821546 ; 1♀, Non- ggang, Longzhou , Guangxi, 1982.V.20, He Junhua, No. 822198 ; 1♀, Fangbu, Dawulinglinchang , Guangdong, 2001.X.6, Xu Zaifu, No. 20021189 ; 1♀, Tianchi, Jiangfengling , Hainan, 2007.X.22–23, Liu Jingxian, No. 200710649 ; 1♀, Mt. Meihua , Fujian, 1988.VII.20, Fan Jinjiang, No. 886218 ; 1♀, Youxi , Fujian, 1988.X.15, Zheng Qi, No. 20005147 ; 1♀, Baishanzu, Qingyuan , Zhejiang, 1994.XI.3, Wu Hong, No. 946408 ; 1♀, Baishanzu , Qin- gyuan, Zhejiang, 1993.X.24, Wu Hong, No. 945717 .
Distribution. Oriental [ China: Fujian, Guangdong, Guangxi, Hainan, Zhejiang].
Etymology. The specific name “ vadosulcus ” derived from the Latin “vadosus” and “sulcus”, referring to a shallow sulcus extending from middle ocellus to occiput.
Remarks. This species is similar to D. artusicarina Song & Chen , but differs in the following: T1 with a longitudinal carina medially (the latter without); lateral carinae of areola relatively strong (the latter weaker and thinner); and ovipositor with distinct attenuation (the latter without).
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