Dolichogenidea gleditsia 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-E12F-FF9D-7FF9-5D0CFCECD814 |
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treatment provided by |
Plazi |
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scientific name |
Dolichogenidea gleditsia Liu & Chen |
| status |
sp. nov. |
Dolichogenidea gleditsia Liu & Chen , sp. nov.
( Figs 25 View FIGURE 25 , 67 View FIGURE 67. 21–35 )
Description. Holotype. Female. Body length 2.5 mm, fore wing length 3.1 mm.
Head. Transverse in dorsal view, 2.0× as wide as long, 0.9× as wide as mesoscutum ( Fig. 25d View FIGURE 25 ). Temple shiny with shallow punctures, a little constricted behind eyes from dorsal view. Face ( Fig. 25h View FIGURE 25 ) transverse, 0.7× as high as wide, shiny with shallow punctures, inner margins of eyes subparallel. Ocelli large, posterior tangent to anterior ocellus weakly transecting posterior pair of ocelli, distance between fore and a hind ocellus as long as diameter of an hind ocellus, POL:OD:OOL = 3.0:2.0:4.0. Antenna shorter than body length, penultimate antennomere 1.7× longer than wide.
Mesosoma. Length:width:height = 47.0:28.0:31.0. Disc of mesonotum ( Fig. 25g View FIGURE 25 ) shiny, with strong, dense punctures, with a trace of striation medio-apically. Scutellar sulcus straight, broad with carinae inbetween. Scutel- lum highly shiny, scattered with shallow punctures. Propodeum ( Fig. 25c View FIGURE 25 ) shiny, with well-defined pentagonal areolation which closed at anterior end, three posterior fields highly shiny and polished, anterio-lateral parts shiny with sharp, sparse punctures. Mesopleuron highly polished, anterior part strongly punctate.
Legs. Hind coxa shiny with superficial punctures. Spines on outer side of hind tibia dispersed. Inner spur of hind tibia nearly half length of hind basitarsus, outer spur 1/3 length of hind basitarsus. Basitarsus of hind leg a little shorter than tarsomeres 2–4 (16.0:17.0).
Wings. Pterostigma 2.8× as long as its widest part ( Fig. 25b View FIGURE 25 ). Vein 1-R1 1.3× longer than pterostigma, it nearly closing marginal cell. Vein r arising from apex of pterostigma, weakly inclined outwards, a little longer than width of pterostigma, r 1.5× longer than 2-SR, indistinctly angled at meeting, 2-M less than half length of 2-SR and slightly shorter than 1-SR and 2-SR+M, m-cu as long as 2-SR. First discal cell of fore wing weakly wider than high (19.0:18.0). Second discal cell of hind wing weakly wider than high (8.5:7.0). Vein cu-a weakly curved ( Fig. 25e View FIGURE 25 ).
Metasoma. 0.9× longer than mesosoma (40.5:47.0). T1 ( Fig. 25f View FIGURE 25 ) parallel-sided, weakly widened before apex, 1.2× longer than hind width, basal one third indistinctly concave, rugulose, turned-over part transverse, longitudinally striate. T2 weakly rugulose laterally, scattered shallow punctures, 3.0× wider than long in middle, curved apically. T3 1.8× longer than T2. Tergites posterior to T2 polished, shiny, and sparsely pubescent. Hypopygium long, strongly downcurved. Ovipositor sheath 1.2× longer than hind tibia, thin and nearly parallel-sided, ovipositor weakly curved throughout, without apical attenuation.
Colour. Black, margins of terigites posterior to T2 and sternites bright reddish yellow ( Fig. 25a, f View FIGURE 25 ). Tegula yellow. Palpi and spurs whitish. Antenna yellow, gradually becoming brown to apical antennomeres. Ovipositor sheath black. Labrum dark reddish yellow and mandible more yellowish. Legs bright reddish yellow, coxae reddish yellow, apical third of hind tibia infuscated. Wing membrane hyaline, pterostigma brown, vein C+SC+R, 1-R1, r, 2-SR, and 2-M pale yellowish brown and other alar veins almost colourless, pterostigma with whitish basal spot.
Variation. Body length 2.5–2.9 mm, fore wing length 3.1–3.3 mm. Specimens from Zhejiang and Hunan with tergites posterior to T2 more or less yellow.
Male. Body length 1.9 mm, fore wing length 2.9 mm. Similar to female, except: T1 longer (1.4× longer than hind width), less rugose and more constricted posteriorly; T2 less transverse, 2.8× wider than long in middle; and antenna distinctly longer than body length, penultimate antennomere fully 2.0×longer than wide.
Material examined ( ZJUH). Holotype: ♀, Xingcheng , Liaoning, 1956.VIII.11, collector unknown, ex a larva of Yponomeutidae on Gleditsia sp., No. 5703.6 . Paratypes: 1♂, same data as holotype ; 1♀, Changsha , Hunan, 1981. V.13, Tong Xinwang, No. 20044907 ; 1♀, Hangzhou , Zhejiang, 1974.V–VI, Wang Huiping, light trap, No. 790835 .
Distribution. Eastern Palaearctic [ China: Liaoning]; Oriental [ China: Hunan, Zhejiang].
Etymology. The specific name “ gleditsia ”, referring to its host food plant Gleditsia sp.
Remarks. This species is similar to D. latitergita Liu & Chen , sp. nov., but differs in the following: penultimate antennomere 1.7× longer than wide (the latter cubic); pterostigma relatively small, 2.8× as long as its widest part (the latter very large, 2.3×); and tegula yellow (the latter black).
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.