Bracon (Glabrobracon) longistriatus, 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/9D9986AE-1975-4716-A0F0-4F48895326BB |
taxon LSID |
lsid:zoobank.org:act:9D9986AE-1975-4716-A0F0-4F48895326BB |
treatment provided by |
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scientific name |
Bracon (Glabrobracon) longistriatus |
status |
sp. nov. |
Bracon (Glabrobracon) longistriatus sp. nov. Figs 7 View Figure 7 , 8 View Figure 8
Type material.
Holotype. ♀, China, Heilongjiang Prov., Yichun, 1985, Jin Liyuan, No. 864358 ( ZJUH). Paratypes. 12♀♀9♂♂, China, Heilongjiang Prov., Yichun, 1985, Jin Liyuan, No. 864365, 864737, 864740, 864739, 864358 (17 specimens) ( ZJUH); 26♀♀28♂♂, China, Heilongjiang Prov., Yichun, 1985.VII, Jin Liyuan, No. 851834 (20 specimens) (host Pissodes nitidus Roelofs), No. 864359 (21 specimens), 864303 (4 specimens), 864296 (5 specimens); 4♀♀5♂♂, China, Heilongjiang Prov., Yichun, 19??, Jin Liyuan, No. 850134 (9 specimens) (host Pissodes sp.) ( ZJUH).
Diagnosis.
This new species is very similar to B. (G.) instabilis Marshall, 1897, but can be separated from the latter by the following characters: in dorsal view, temples gradually narrowed behind eyes and length of eye 1.4 × temple (temples strongly narrowed behind eyes and length of eye more than twice as long as temple in B. (G.) instabilis ); first metasomal tergite (except median area), second tergite (but infuscate medially) reddish-yellow, third tergite sometimes reddish-yellow basally (metasomal tergites often entirely blackish-brown); legs yellow and only claws dark brown (legs blackish-brown with yellow or yellowish-brown pattern); first metasomal tergite 1.0-1.1 × longer than its apical width (1.2-1.4 times).
Description.
Holotype, ♀, length of body 3.0 mm, of fore wing 3.2 mm, of ovipositor sheath 1.1 mm.
Head. Antenna incomplete, only remaining are scapus and pedicel; malar suture indistinct, with some short setae; clypeus height: inter-tentorial distance: tentorio-ocular distance = 2: 11: 6; clypeus sparsely short setose; eye not emarginate (Fig. 8g View Figure 8 ); face largely smooth, except for a few weak punctures and with sparse short setae (Fig. 8g View Figure 8 ); eye height: shortest distance between eyes: head width = 12: 16: 31; frons smooth, slightly concave behind antennal sockets, with a rather weak median groove (Fig. 8h View Figure 8 ); vertex smooth, with sparse short setae; shortest distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: shortest distance between posterior ocellus and eye = 8: 5: 8; temples subparallel immediately behind eyes (Fig. 8h View Figure 8 ).
Mesosoma. Length of mesosoma 1.6 × its height (Fig. 8c View Figure 8 ); notauli relatively deeply impressed anteriorly, shallow posteriorly (Fig. 8d View Figure 8 ); mesoscutum largely smooth except for a few weak punctures posteriorly, with sparse setae posteriorly (Fig. 8d View Figure 8 ); scutellar sulcus deep, wide, with crenulae (Fig. 8d View Figure 8 ); scutellum smooth, with dense setae posteriorly; metanotum moderately convex medially (Fig. 8d View Figure 8 ); propodeum largely smooth, with a short medio-longitudinal carina posteriorly and sparsely setose medially, with dense long setae laterally (Fig. 8d View Figure 8 ).
Wings. Fore wing (Fig. 8a View Figure 8 ): SR1: 3-SR: r = 19: 9: 5; 1-SR+M more or less straight, 1.3 × longer than 1-M; 2-SR: 3-SR: r-m = 13: 18: 9; m-cu straight, 1.7 × longer than 2-SR+M; angle between 1-SR and C+SC+R about 80°; cu-a more or less interstitial. Hind wing (Fig. 8b View Figure 8 ): SC+R1: 2-SC+R: 1r-m = 19: 3: 8.
Legs. Length of fore femur: tibia: tarsus = 25: 27: 31; length of hind femur: tibia: basitarsus = 24: 35: 14; length of femur, tibia and basitarsus of hind leg 3.7, 7.0 and 4.7 × their maximum width, respectively; hind tibial spurs 0.3 and 0.4 × as long as hind basitarsus.
Metasoma. Length of first tergite 1.1 × its apical width; first tergite concave medio-basally, median area convex and with some striae (Fig. 8j View Figure 8 ); lateral grooves of first tergite moderately narrow, with sparse and weak crenulae (Fig. 8j View Figure 8 ); second tergite largely with striae, but laterally and posteriorly smooth (Fig. 8e View Figure 8 ); median length of second and third tergites about equal; second metasomal suture moderately narrow, crenulate, weakly curved medially (Fig. 8e View Figure 8 ); third to seventh tergites smooth (Fig. 8e View Figure 8 ); ovipositor sheath 0.3 × as long as fore wing.
Colour. Largely blackish-brown (Fig. 7 View Figure 7 ); pedicel apically, mandible (except for apically black brown) and legs (but claws dark brown) yellow (Figs 7 View Figure 7 , 8f, g View Figure 8 ); first metasomal tergite (but median area blackish-brown), second tergite (but medio-anteriorly blackish-brown) yellowish-brown (Fig. 8e, j View Figure 8 ); ovipositor sheath black (Fig. 7 View Figure 7 ); wing membrane pale yellow, pterostigma yellow and veins dark brown (Fig. 8a, b View Figure 8 ).
Variation. Length of body of female 3.0-4.5 mm, of fore wing of female 3.1-4.2 mm and of ovipositor sheath 1.0-2.0 mm; antenna of female with 28 segments; apical antennal segment acute, 2.6 × longer than its maximum width; first flagellomere 2.0 × longer than wide, 1.1 and 1.2 × longer than second and third, respectively, the latter being 1.6 × longer than wide; length of mesosoma 1.4-1.6 × its height; length of first tergite 1.0-1.1 × its apical width; ovipositor sheath 0.3-0.5 × as long as fore wing; third metasomal tergite sometimes basally yellowish-brown; pterostigma and veins yellowish-brown to dark brown.
Male. Length of body of male 2.3-3.3 mm, of fore wing of male 2.0-2.9 mm; metasomal tergites sometimes uniformly black brown.
Biology.
The type series has been reared from Pissodes sp. and Pissodes nitidus Roelofs ( Coleoptera: Curculionidae ).
Distribution.
China (Heilongjiang).
Etymology.
Named after the largely striate median area of the first metasomal tergite and the second tergite: “longus” is Latin for “long” and “striata” is Latin for "with striae".
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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