Bracon (Uncobracon) eurysulcatus, 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/B6EADCA5-A731-4D5A-B733-55785B41D983 |
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taxon LSID |
lsid:zoobank.org:act:B6EADCA5-A731-4D5A-B733-55785B41D983 |
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treatment provided by |
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scientific name |
Bracon (Uncobracon) eurysulcatus |
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sp. nov. |
Bracon (Uncobracon) eurysulcatus sp. nov. Figs 23 View Figure 23 , 24 View Figure 24
Type material.
Holotype. ♀, China, Guangxi Prov., Longzhou Nonggang, 20.V.1982, He Junhua, No. 821603 (ZJUH).
Diagnosis.
This new species is very similar to B. (U.) tricoloratus Tobias, 2000, but can be separated from the latter by the following characters: in dorsal view length of eye 2.6 × temple (1.8 × temple in B. (U.) tricoloratus ); scutellar suture rather wide, with sparse (four) crenulae (relatively narrow, with at least eight crenulae); first and second metasomal tergites whitish-yellow and with black spots (entirely blackish-brown); medio-basal area of second tergite connected to medio-longitudinal carina distally (without medio-longitudinal carina).
Description.
Holotype, ♀, length of body 5.6 mm, of fore wing 6.0 mm, of ovipositor sheath 3.6 mm.
Head. Antenna with 43 segments; apical antennal segment with a short spine apically, 2.3 × longer than its maximum width (Fig. 24l View Figure 24 ); first flagellomere 1.4 × longer than wide, 1.1 and 1.2 × longer than second and third, respectively, the latter being 1.2 × longer than wide; malar suture rather weak, with some short setae; clypeus height: inter-tentorial distance: tentorio-ocular distance = 3: 10: 5; clypeus sparsely short setose; eye nearly not emarginate (Fig. 24g View Figure 24 ); face transverse rugose, weakly convex medially and with dense long setae laterally (Fig. 24g View Figure 24 ); eye height: shortest distance between eyes: head width = 15: 19: 40; frons weakly granulate, weakly concave behind antennal sockets, with a median groove and densely short setose laterally (Fig. 24h View Figure 24 ); vertex weakly granulate, with dense short setae; shortest distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: shortest distance between posterior ocellus and eye = 3: 3: 7; temples strongly narrowed behind eyes (Fig. 24h View Figure 24 ).
Mesosoma. Length of mesosoma 1.3 × its height (Fig. 24c View Figure 24 ); notauli complete and deeply impressed (Fig. 24d View Figure 24 ); mesoscutum smooth, with sparse short setae along notaulic courses (Fig. 24d View Figure 24 ); scutellar sulcus deep, wide, with four strong crenulae (Fig. 24d View Figure 24 ); scutellum smooth, with dense short setae posteriorly; metanotum moderately convex medially, with a short carina anteriorly (Fig. 24d View Figure 24 ); propodeum largely smooth, with a complete medio-longitudinal carina and a few oblique short carinae laterally and laterally with dense long setae (Fig. 24d View Figure 24 ).
Wings. Fore wing (Fig. 24a View Figure 24 ): SR1: 3-SR: r = 53: 27: 9; 1-SR+M weakly curved posteriorly, 1.3 × longer than 1-M; 2-SR: 3-SR: r-m = 17: 27: 13; m-cu straight, 1.5 × longer than 2-SR+M; angle between 1-SR and C+SC+R about 80°; cu-a interstitial. Hind wing (Fig. 24b View Figure 24 ): SC+R1: 2-SC+R: 1r-m = 20: 5: 9.
Legs. Length of fore femur: tibia: tarsus = 30: 34: 37; length of hind femur: tibia: basitarsus = 45: 54: 20; length of femur, tibia and basitarsus of hind leg 4.6, 8.3 and 5.7 × their maximum width, respectively; hind tibial spurs 0.4 and 0.5 × as long as hind basitarsus.
Metasoma. Length of first tergite 0.9 × its apical width; first tergite concave medio-basally, median area convex and strongly sculptured posteriorly, with a short medio-longitudinal carina posteriorly (Fig. 24k View Figure 24 ); lateral grooves of first tergite moderately wide, with sparse weak crenulae (Fig. 24k View Figure 24 ); second tergite coarsely sculptured, with a small and rugose triangular medio-basal area connected to medio-longitudinal carina apically (Fig. 24e View Figure 24 ); second metasomal suture wide, deep, with sparse, but strong crenulae, curved medially (Fig. 24e View Figure 24 ); third tergite with fine antero-lateral grooves; third to sixth tergites coarsely sculptured (Fig. 24e View Figure 24 ); seventh tergite smooth (Fig. 24e View Figure 24 ); setose part of ovipositor sheath 0.6 × length of fore wing.
Colour. Head and mesosoma largely reddish-yellow (Fig. 23 View Figure 23 ); antenna, eye, mandible apically, metapleuron and propodeum black (Fig. 24c, d, g View Figure 24 ); fore leg reddish-yellow (but claws black), middle and hind legs black (Figs 23 View Figure 23 , 24f View Figure 24 ); metasoma largely black, first and second metasomal tergites laterally, third tergite antero-laterally and seventh tergite posteriorly yellow (Fig. 24e, k View Figure 24 ); ovipositor sheath black (Fig. 23 View Figure 23 ); wing membrane pale infuscate, pterostigma and veins dark brown (Fig. 24a, b View Figure 24 ).
Biology.
Unknown.
Distribution.
China (Guangxi).
Etymology.
Named after the wide scutellar sulcus: “eurys” is Greek for “wide” and “sulcus” is Latin for “groove”.
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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