Bracon (Lucobracon) brevicarinatus, Li & He & Chen, 2020
publication ID |
https://dx.doi.org/10.3897/dez.67.57668 |
publication LSID |
lsid:zoobank.org:pub:41F77B2A-0E1C-4874-AE89-1E72B3DD6A32 |
persistent identifier |
https://treatment.plazi.org/id/2ACD0695-3311-407A-849B-8A402A6BA09B |
taxon LSID |
lsid:zoobank.org:act:2ACD0695-3311-407A-849B-8A402A6BA09B |
treatment provided by |
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scientific name |
Bracon (Lucobracon) brevicarinatus |
status |
sp. nov. |
Bracon (Lucobracon) brevicarinatus sp. nov. Figs 13 View Figure 13 , 14 View Figure 14
Type material.
Holotype. ♀, China, Liaoniang Prov., Shenyang, 26.VIII.1994, Lou Juxian, No. 975731 ( ZJUH). Paratypes. 1♀3♂♂, China, Liaoniang Prov., Shenyang, VI-VII.1995, Lou Juxian, No. 975749, 975601, 975756, 975773 ( ZJUH).
Diagnosis.
This new species is very similar to B. (L.) flavitestaceus sp. nov., but can be separated from the latter by the following characters: ovipositor sheath 0.7 × as long as fore wing (0.1 × in B. (L.) flavitestaceus ); mesoscutum yellowish-brown, middle lobe anteriorly and lateral lobes with a blackish-brown spots, respectively (without spots); medio-longitudinal carina short, remaining far from middle of propodeum (long and beyond middle of propodeum); in dorsal view, length of eye 1.7-1.8 × temple (1.4-1.5 times).
Description.
Holotype, ♀, length of body 3.9 mm, of fore wing 3.5 mm, of ovipositor sheath 2.6 mm.
Head. Antenna with 29 segments; apical antennal segment acute, twice longer than its maximum width (Fig. 14l View Figure 14 ); first flagellomere 1.9 × longer than wide, 1.1 and 1.2 × longer than second and third, respectively, the latter being 1.4 × longer than wide; malar suture rather weak, with dense short setae; clypeus height: inter-tentorial distance: tentorio-ocular distance = 4: 10: 5; clypeus sparsely short setose; eye not emarginated (Fig. 14g View Figure 14 ); face weakly granulate and with dense short setae laterally (Fig. 14g View Figure 14 ); eye height: shortest distance between eyes: head width = 13: 18: 33; frons smooth slightly concave behind antennal sockets, with a rather weak median groove (Fig. 14h View Figure 14 ); vertex smooth, with sparse short setae; shortest distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: shortest distance between posterior ocellus and eye = 3: 2: 5; temples linearly narrowed behind eyes (Fig. 14h View Figure 14 ).
Mesosoma. Length of mesosoma 1.7 × its height (Fig. 14c View Figure 14 ); notauli impressed anteriorly, rather shallow posteriorly (Fig. 14d View Figure 14 ); mesoscutum smooth, with dense long setae along notaulic courses (Fig. 14d View Figure 14 ); scutellar sulcus deep, moderately wide, with crenulae (Fig. 14d View Figure 14 ); scutellum smooth, with dense setae posteriorly; metanotum moderately convex medially (Fig. 14d View Figure 14 ); propodeum largely smooth, with a short medio-longitudinal carina posteriorly and sparsely setose medially, with dense long setae laterally (Fig. 14j View Figure 14 ).
Wings. Fore wing (Fig. 14a View Figure 14 ): SR1 not reaching tip of wing; SR1: 3-SR: r = 25: 15: 7; 1-SR+M straight, 1.6 × longer than 1-M; 2-SR: 3-SR: r-m = 12: 15: 8; m-cu straight, 1.2 × longer than 2-SR+M; angle between 1-SR and C+SC+R about 80°; cu-a more or less interstitial. Hind wing (Fig. 14b View Figure 14 ): SC+R1: 2-SC+R: 1r-m = 13: 5: 6.
Legs. Length of fore femur: tibia: tarsus = 20: 24: 29; length of hind femur: tibia: basitarsus = 25: 37: 14; length of femur, tibia and basitarsus of hind leg 3.1, 9.3 and 5.6 × their maximum width, respectively; hind tibial spurs 0.3 and 0.4 × as long as hind basitarsus.
Metasoma. First tergite as long as its apical width; first tergite concave medio-basally, median area convex and largely smooth but weakly rugose laterally (Fig. 14k View Figure 14 ); lateral grooves of first tergite moderately wide, with sparse crenulae (Fig. 14k View Figure 14 ); second tergite largely smooth but medio-anteriorly rugose (Fig. 14e View Figure 14 ); median length of second tergite slightly longer than that of third tergite; second metasomal suture moderately narrow, crenulate, more or less straight medially (Fig. 14e View Figure 14 ); third to seventh tergites smooth (Fig. 14e View Figure 14 ); ovipositor sheath 0.7 × as long as fore wing.
Colour. Largely yellowish-brown (Fig. 13 View Figure 13 ); antenna, eyes, mandible apically, frons medially, stemmaticum, middle lobe of mesoscutum posteriorly, notaulic courses, mesopleuron posteriorly, scutellum posteriorly and laterally, metanotum, propodeum, claws and ovipositor sheath blackish-brown (Figs 13 View Figure 13 , 14c, d, f-h, j View Figure 14 ); median area of first metasomal tergite, second tergite medio-anteriorly and third to fourth tergites posteriorly infuscate (Fig. 14e, k View Figure 14 ); wing membrane pale yellow, pterostigma dark brown and veins yellowish-brown to dark brown (Fig. 14a, b View Figure 14 ).
Variation. Length of body of female 3.6-3.9 mm, of fore wing of female 2.9-3.5 mm and of ovipositor sheath 2.0-2.6 mm; second metasomal tergite medio-anteriorly blackish-brown.
Male. Length of body of male 3.1-3.4 mm, of fore wing of male 2.3-2.9 mm; antenna relatively longer, with 27 segments; second metasomal tergite sometimes largely rugose; body colour variable; head sometimes largely blackish-brown dorsally; middle lobe of mesoscutum sometimes yellowish-brown, without blackish-brown spot; third to sixth metasomal tergites sometimes blackish-brown posteriorly (fourth tergite sometimes black brown medially).
Biology.
Unknown.
Distribution.
China (Liaoning).
Etymology.
Named after the short medio-longitudinal carina posteriorly on the propodeum: “brevis” is Latin for “short” and “carina” is Latin for “ridge”.
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.
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