Dolichogenidea longialba 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-E157-FFFA-7FF9-59B3FD30DFA7 |
|
treatment provided by |
Plazi |
|
scientific name |
Dolichogenidea longialba Liu & Chen |
| status |
sp. nov. |
Dolichogenidea longialba Liu & Chen , sp. nov.
( Figs 38 View FIGURE 38 , 68 View FIGURE 68. 36–60 )
Description. Holotype. Female. Body length 2.2 mm, fore wing length 2.7 mm.
Head. Weakly transverse in dorsal view, 1.8× as wide as long, 0.9× as wide as mesoscutum ( Fig. 38g View FIGURE 38 ). Temple dull without punctures, not constricted behind eyes from dorsal view. Face ( Fig. 38i View FIGURE 38 ) transverse, 0.8× as high as wide, dull, rough without punctures, inner margins of eyes subparallel. Ocelli small, posterior tangent to anterior ocellus hardly touching posterior pair of ocelli, distance between fore and a hind ocellus as long as diameter of an hind ocellus, POL:OD:OOL = 3.8:2.0:4.2. Antenna ( Fig. 38e View FIGURE 38 ) weakly longer than body length, penultimate antennomere 1.5× longer than wide.
Mesosoma. Length:width:height = 41.0:27.0:27.5. Disc of mesonotum ( Fig. 38b View FIGURE 38 ) slighly shiny, with strong, dense punctures which sparser on posterior half. Scutellar sulcus weakly curved, broad with carinae inbetween. Scutellum shiny, with shallow, sparse punctures. Propodeum ( Fig. 38d View FIGURE 38 ) highly shiny, with well-defined areolation which opened at anterior end, rugose-punctate medio-anteriorly, three posterior fields highly shiny and polished, with long, white setae anteriorly and laterally. Mesopleuron highly polished, anterior part shallowly, sparsely punctate.
Legs. Hind coxa a little shiny, without punctures. Spines on outer side of hind tibia sparse, long. Inner spur of hind tibia half length of hind basitarsus, outer spur 1/3 length of hind basitarsus. Basitarsus of hind leg weakly shorter than tarsomeres 2–4 (14.0:15.0).
Wings. Pterostigma 3.0× as long as its widest part ( Fig. 38c View FIGURE 38 ). Vein 1-R1 1.2× longer than pterostigma, 6.3× as long as its distance from apex of marginal cell. Vein r arising from middle of pterostigma, weakly curved outwards, as long as width of pterostigma, r weakly longer than 2-SR, angled at meeting, 2-M over half length of 2-SR and nearly as long as 1-SR and slightly shorter than 2-SR+M, m-cu as long as r. First discal cell of fore wing 1.3× wider than high. Second discal cell of hind wing 2.0× wider than high. Vein cu-a weakly curved ( Fig. 38f View FIGURE 38 ).
Metasoma. 0.8× as long as mesosoma. T1 ( Fig. 38j View FIGURE 38 ) widened towards apex, slightly constricted posteriorly, 1.3× longer than hind width, basal one third indistinctly concave, nearly smooth, turned-over part nearly quadrate, strongly rugose medially, longitudinally striate laterally. T2 rugose medially as T1, longitudinally striate laterally, 4.0× wider than long in middle, weakly curved apically. T3 1.4× longer than T2. Tergites posterior to T2 polished, shiny, and pubescent. Hypopygium as long as apex of metasoma. Ovipositor sheath 0.9× length of hind femur, thin and parallel-sided, ovipositor a little thick basally, with an apical attenuation.
Colour. Black ( Fig. 38a View FIGURE 38 ). Tegula black. Palpi and spurs white. Antenna and ovipositor sheath dark brown. Labrum dark reddish brown and mandible more yellowish. Legs black, except fore leg, posterior half of mid femur, basal half of mid tibia, most of mid tarsus, basal 1/3 of hind tibia yellow and hind tibia yellowish brown. Wing membrane hyaline, pterostigma, vein 1-R1, apical C+SC+R, r, 2-SR, and 2-M brown, basal C+SC+R yellowish, and other alar veins colourless, pterostigma without whitish basal spot.
Variation. Body length 2.2–3.1 mm, fore wing length 2.7–3.1 mm. Disc of mesonotum of somespecimens polished along posterior margin.
Male. Body length 2.4 mm, fore wing length 2.7 mm. Similar to female, except: pterostigma whitish with dark border; T2 less transverse, 3.1× wider than long in middle.
Host. Unknown.
Material examined ( ZJUH). Holotype: ♀, Shanghudixiang, Shawan , Xinjiang, 2004.VIII.11, Tuerxun, No. 200600351 . Paratypes: 1♀, Yushugouxiang, Changji , Xinjiang, 2004.VIII.19, Tuerxun, No. 200600846 ; 1♀, Tao- jiagongxiang, Hami , Xinjiang, 2004.VII.30, Tuerxun, No. 200600154 ; 1♀, Changshanzi, Miquan , Xinjiang, 2004. VIII.19, Tuerxun, No. 200600817 ; 1♀, Huichengxiang, Hami , Xinjiang, 2004.VIII.11, Tuerxun, No. 200600319 ; 1♀, Wulumuqi , Xinjiang, 1987.VIII.24, Ma Qi, No. 878957 ; 1♀, Hebukesaier , Xinjiang, 1990.VII.18, Ma Qi, No. 907445 ; 3♀♀ 1♂, Bole, Xinjiang, 1982, Chen Yaqiong , Nos. 826419, 826425(2♀♀ 1♂) .
Distribution. Eastern Palaearctic [ China: Xinjiang].
Etymology. The specific name “ longialba ” derived from the Latin “longus” and “albus”, referring to long, white setae on anterior and lateral propodeum.
Remarks. This species is similar to D. brevicarinata Chen & Song , but differs in the following: vein 2-SR of fore wing distinctly longer than 2-SR+M (the latter equal to); inner spur of hind tibia half length of hind basitarsus, outer spur 1/3 length of hind basitarsus (the latter with inner and outer spur nearly equal in length, 2/5); and face without punctures (the latter shallowly punctate).
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.