Bracon (Glabrobracon) leptotes, Li & He & Chen, 2020
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publication ID |
https://dx.doi.org/10.3897/dez.67.57668 |
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publication LSID |
lsid:zoobank.org:pub:41F77B2A-0E1C-4874-AE89-1E72B3DD6A32 |
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persistent identifier |
https://treatment.plazi.org/id/E993AF44-E544-4319-8705-F5BEA77E7123 |
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taxon LSID |
lsid:zoobank.org:act:E993AF44-E544-4319-8705-F5BEA77E7123 |
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treatment provided by |
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scientific name |
Bracon (Glabrobracon) leptotes |
| status |
sp. nov. |
Bracon (Glabrobracon) leptotes sp. nov. Figs 5 View Figure 5 , 6 View Figure 6
Type material.
Holotype. ♀, China, Fujian Prov., Mt. Wuyi, Tongmu, 14.VII.1994, Chen Xuexin, No. 942349 (ZJUH). Paratype. 1♀, same data as holotype, No. 942303 (ZJUH).
Diagnosis.
This new species is very similar to B. (G.) arcuatus Thomson, 1892, but can be separated from the latter by the following characters: fore wing second submarginal cell medium-sized, vein 3-SR 1.7 × as long as vein 2-SR (short, vein 3-SR slightly longer than (rarely as long as) vein 2-SR in B. (G.) arcuatus ); setose part of ovipositor sheath distinctly longer than hind tibia + basitarsus combined, as long as or slightly longer than hind tibia + tarsus combined (as long as hind tibia + basitarsus combined and shorter than hind tibia + tarsus combined); first metasomal tergite 1.2 × longer than its apical width, lateral grooves with sparse crenulae, remainder of tergite smooth (quadrate or nearly so, slightly longer than or as long as its apical width, lateral grooves with distinct crenulae and tergite with median and lateral areas rugose).
Description.
Holotype, ♀, length of body 2.5 mm, of fore wing 3.0 mm, of ovipositor sheath 1.1 mm.
Head. Antenna with 28 segments; apical antennal segment strongly acute, 3.3 × longer than its maximum width (Fig. 6k View Figure 6 ); first flagellomere 2.5 × longer than wide, 1.2 and 1.3 × longer than second and third, respectively, the latter being twice longer than wide; malar suture rather weak, with some short setae; clypeus height: inter-tentorial distance: tentorio-ocular distance = 3: 8: 4; clypeus sparsely short setose; eye not emarginate (Fig. 6g View Figure 6 ); face largely smooth except for a few weak punctures laterally and anteriorly and with sparse short setae (Fig. 6g View Figure 6 ); eye height: shortest distance between eyes: head width = 14: 14: 29; frons largely smooth except for a few weak punctures anteriorly, slightly concave behind antennal sockets, with a rather weak median groove (Fig. 6h View Figure 6 ); vertex smooth, with sparse short setae; shortest distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: shortest distance between posterior ocellus and eye = 4: 3: 6; temples strongly narrowed behind eyes (Fig. 6h View Figure 6 ).
Mesosoma. Length of mesosoma 1.6 × its height (Fig. 6c View Figure 6 ); notauli only impressed anteriorly (Fig. 6d View Figure 6 ); mesoscutum smooth, with sparse setae posteriorly and along imaginary notaulic courses (Fig. 6d View Figure 6 ); scutellar sulcus deep, narrow, with crenulae (Fig. 6d View Figure 6 ); scutellum smooth, with some setae; metanotum moderately convex medially (Fig. 6d View Figure 6 ); propodeum largely smooth, with a short medio-longitudinal carina posteriorly and sparsely setose medially, with dense long setae laterally (Fig. 6d View Figure 6 ).
Wings. Fore wing (Fig. 6a View Figure 6 ): SR1: 3-SR: r = 26: 15: 5; 1-SR+M straight, 1.3 × longer than 1-M; 2-SR: 3-SR: r-m = 9: 15: 5; m-cu straight, 2.0 × longer than 2-SR+M; angle between 1-SR and C+SC+R about 80°; cu-a interstitial. Hind wing (Fig. 6b View Figure 6 ): SC+R1: 2-SC+R: 1r-m = 19: 4: 11.
Legs. Length of fore femur: tibia: tarsus = 17: 20: 29; length of hind femur: tibia: basitarsus = 21: 26: 10; length of femur, tibia and basitarsus of hind leg 3.8, 8.2 and 4.7 × their maximum width, respectively; hind tibial spurs 0.2 and 0.3 × as long as hind basitarsus.
Metasoma. Length of first tergite 1.2 × its apical width; first tergite concave medio-basally, median area convex and smooth (Fig. 6j View Figure 6 ); lateral grooves of first tergite very wide, with sparse crenulae (Fig. 6j View Figure 6 ); second tergite largely smooth except for some striae medially (Fig. 6e View Figure 6 ); median length of second tergite slightly longer than that of third tergite; second metasomal suture moderately wide, crenulate, weakly curved medially (Fig. 6e View Figure 6 ); third to seventh tergites smooth (Fig. 6e View Figure 6 ); ovipositor sheath 0.4 × as long as fore wing.
Colour. Largely blackish-brown (Fig. 5 View Figure 5 ); scapus, mandible (but apically black) and legs (but claws dark brown, hind tarsus somewhat infuscate) yellow (Figs 5 View Figure 5 , 6f, g View Figure 6 ); first metasomal tergite yellow, but median area brown (Fig. 6j View Figure 6 ); second tergite laterally yellow; ovipositor sheath black (Fig. 6e View Figure 6 ); wing membrane pale yellow, pterostigma and veins dark brown (Fig. 6a, b View Figure 6 ).
Variation. Length of body of female 2.5-3.2 mm, of fore wing of female 3.0-3.1 mm and of ovipositor sheath 1.1-1.4 mm; antenna of female with 28-31 segments; third metasomal tergite weakly rugose medially; ovipositor sheath 0.4-0.5 × as long as fore wing; second metasomal tergite uniformly black brown.
Biology.
Unknown.
Distribution.
China (Zhejiang).
Etymology.
Named after the slender ovipositor: “leptotes” is Greek for “slenderness”.
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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