Bracon (Glabrobracon) indistinctus, 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/9F9C597E-AF8F-4203-8E81-700170DE3FAD |
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taxon LSID |
lsid:zoobank.org:act:9F9C597E-AF8F-4203-8E81-700170DE3FAD |
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treatment provided by |
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scientific name |
Bracon (Glabrobracon) indistinctus |
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sp. nov. |
Bracon (Glabrobracon) indistinctus sp. nov. Figs 1 View Figure 1 , 2 View Figure 2
Type material.
Holotype. ♀, China, Zhejiang Prov., Mt. Tianmu, Laodian-Xianrending, 1250-1547 m alt., 17-18.V.1988, Fan Jinjiang, No. 884381 ( ZJUH).
Diagnosis.
This new species is very similar to B. (G.) isomera (Cushman, 1931), but can be separated from the latter by the following characters: metasomal tergites largely dark brown (yellow to reddish-brown in B. isomera ); second metasomal suture crenulate and sinuate (smooth and straight or weakly sinuate); propodeum with short medio-longitudinal carina posteriorly (without short medio-longitudinal carina posteriorly); fore wing vein cu-a slightly postfurcal (interstitial).
Description.
Holotype, ♀, length of body 4.1 mm, of fore wing 4.2 mm, of ovipositor sheath 2.1 mm.
Head. Antenna with 36 segments; apical antennal segment with a short spine apically, 2.9 × longer than its maximum width (Fig. 2n View Figure 2 ); first flagellomere 2.1 × longer than wide, 1.1 and 1.2 × longer than second and third, respectively, the latter being 1.5 × longer than wide; malar suture rather weak, with some short setae; clypeus height: inter-tentorial distance: tentorio-ocular distance = 5: 11: 6; clypeus densely short setose; eye not emarginate (Fig. 2g View Figure 2 ); face smooth, with some short setae laterally (Fig. 2g View Figure 2 ); eye height: shortest distance between eyes: head width = 13: 17: 32; frons largely smooth, except for a few weak striae laterally, slightly concave behind antennal sockets, with a rather weak median groove (Fig. 2h View Figure 2 ); 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: 3: 7; temples linearly narrowed behind eyes (Fig. 2h View Figure 2 ).
Mesosoma. Length of mesosoma 1.4 × its height (Fig. 2c View Figure 2 ); notauli rather weak and only impressed anteriorly (Fig. 2d View Figure 2 ); mesoscutum smooth and with sparse setae along imaginary notaulic courses (Fig. 2d View Figure 2 ); scutellar sulcus deep, moderately wide, with crenulae (Fig. 2d View Figure 2 ); scutellum smooth, with some setae; metanotum moderately convex medially (Fig. 2d View Figure 2 ); propodeum largely smooth, with a short medio-longitudinal carina posteriorly and sparsely setose medially, with dense long setae laterally (Fig. 2j View Figure 2 ).
Wings. Fore wing (Fig. 2a View Figure 2 ): SR1: 3-SR: r = 40: 25: 11; 1-SR+M more or less straight, 1.4 × longer than 1-M; 2-SR: 3-SR: r-m = 18: 25: 9; m-cu straight, 1.8 × longer than 2-SR+M; angle between 1-SR and C+SC+R about 80°; cu-a weakly postfurcal. Hind wing (Fig. 2b View Figure 2 ): SC+R1: 2-SC+R: 1r-m = 18: 3: 10.
Legs. Length of fore femur: tibia: tarsus = 26: 29: 35; length of hind femur: tibia: basitarsus = 35: 45: 17; length of femur, tibia and basitarsus of hind leg 4.4, 9.0 and 6.8 × 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, median area convex, surface largely smooth, but well-defined grooves sparsely and weakly crenulate (Fig. 2k View Figure 2 ); lateral grooves of first tergite with sparse crenulae (Fig. 2k View Figure 2 ); medially second tergite approximately as long as third tergite; second metasomal suture narrow, sparsely and weakly crenulate, strongly curved medially (Fig. 2e View Figure 2 ); medially third tergite 0.3 × as long as its apical width; second to seventh tergites smooth (Fig. 2e View Figure 2 ); setose part of ovipositor sheath 0.5 × as long as fore wing.
Colour. Head largely blackish-brown, eye orbits and mandible (except its black apex) reddish-yellow (Fig. 2g, h View Figure 2 ); mesosoma largely reddish-yellow, propodeum anteriorly and posteriorly somewhat infuscate (Fig. 2c, d, j View Figure 2 ); legs largely blackish-brown, fore coxa and trochanter dark yellow; metasoma largely dark brown (Fig. 2e View Figure 2 ); first and second metasomal tergites relatively pale (Fig. 2e, k View Figure 2 ); ovipositor sheath black (Fig. 1 View Figure 1 ); wing membrane infuscate, pterostigma and veins dark brown (Fig. 2a, b View Figure 2 ).
Biology.
Unknown.
Distribution.
China (Zhejiang).
Etymology.
Named after the rather weakly developed notauli: “indistinctus” is Latin for "not distinct".
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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