Bicurta hejunhuai Liu, Yan & Broad, 2019
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publication ID |
https://dx.doi.org/10.3897/jhr.74.39570 |
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publication LSID |
lsid:zoobank.org:pub:8B591C56-E2DC-4F55-BA45-2B2111F1A13C |
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persistent identifier |
https://treatment.plazi.org/id/FCDA6C05-C21E-4FE1-AD15-B5B0B79C55B7 |
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taxon LSID |
lsid:zoobank.org:act:FCDA6C05-C21E-4FE1-AD15-B5B0B79C55B7 |
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treatment provided by |
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scientific name |
Bicurta hejunhuai Liu, Yan & Broad |
| status |
sp. nov. |
Bicurta hejunhuai Liu, Yan & Broad sp. nov.
Figs 1 View Figure 1 , 2-7 View Figure 2–7 , 8-12 View Figures 8–12 , 13-17 View Figures 13–17 , 18 View Figure 18 , 19-24 View Figures 19–24 , 25 View Figure 25 , 26 View Figure 26
Material examined.
Holotype female, China: Liaoning Province, Shenyang City , 22-30 March 2019, leg. Jia-He Yan, reared from larva of Stenocephus fraxini Wei (SCAU) . Paratypes 2♀♀ and 21 ♂♂, same data as holotype (SCAU) ; 1 female, Inner Mongolia Autonomous region of China, Huhehot, Wulanfu Park , 24 March 2019, leg. Jia-He Yan (SCAU) ; 2♀♀, Heilongjiang Province, Harbin, Botany Garden of Harbin, reared from Fraxinus mandshurica Rupr. ( Lamiales , Oleaceae ), 7 May 2019, leg. Jia-He Yan (SCAU) ; 4♀♀ and 9♂♂, Liaoning Province, Shenyang, collected from Fraxinus chinensis Roxb. and F. pennsylvanica Marsh., 25 April 2019, leg. Jia-He Yan (SCAU) .
Description.
Holotype, female ( Fig. 1 View Figure 1 ). Body length 10.0 mm, fore wing length 6.2 mm, antenna length 3.8 mm, ovipositor length 1.6 mm.
Head. Face flat ( Fig. 2 View Figure 2–7 ), 1.2 × as wide as high, centrally with sparse punctures, distance between punctures of central area 1.0 to 5.0 × diameter of punctures, punctures close below antennal sockets and near inner orbits; face next to inner orbit with fine granular texture. Clypeus ( Fig. 1 View Figure 1 ) 2.2 × as wide as high, finely and sparsely punctate, apical margin with an obtuse median tubercle, impunctate. Mandible weakly narrowed to apex, middle width of mandible 0.57 × as wide as basal width of mandible, with lower tooth slightly longer than upper tooth. Labrum not exposed. Malar space short ( Fig. 4 View Figure 2–7 ), finely wrinkled and with fine leathery texture in between, 0.33 × as long as basal mandibular width. Gena ( Fig. 3 View Figure 2–7 ) evenly convergent posteriorly, finely punctulate and pubescent, 0.63 × as long as eye in dorsal view. Vertex ( Fig. 3 View Figure 2–7 ) with posterior portion finely punctulate, between lateral ocellus and eye with fine leathery texture. POL = 1.0, OD = 1.25, OOL = 1.0. Interocellar area flat with a short longitudinal groove. Frons finely punctate above antennal sockets, centrally with a weak longitudinal carina extending between antennal sockets to median ocellus, frons slightly rugose along carina sides. Antenna ( Fig. 8 View Figures 8–12 ) with 19 flagellomeres, ratio of length of basal five flagellomeres as follows: 1.42: 1.25: 1.17: 1.08: 1.0, first flagellomere 2.83 × as long as its apical width, apical flagellomere 2.4 × as long as its basal width, slightly shorter than fourth flagellomere (12: 14). Occipital carina sharp and strong. Distance from hypostomal carina to mandible 1.25 × longer than basal mandibular width.
Mesosoma. Propleuron finely and densely punctate, pubescent. Pronotum ( Fig. 4 View Figure 2–7 ) strongly sculptured, central depressed portion with anteriorly arched longitudinal wrinkles, dorsal half irregularly strongly rugose, with epomia indistinctly differentiated from these rugae. Mesoscutum ( Fig. 5 View Figure 2–7 ) with median lobe slightly convex in lateral view, median lobe with irregularly distributed fine punctures which are sparser centrally; punctures on lateral lobe sparser than those on median lobe; notaulus deep notaulus deep and crenulate, mesoscutum centrally with a short longitudinal groove behind median lobe and between meeting point of notauli; posterior median portion of mesoscutum polished, with sparse punctures. Scutellum ( Fig. 5 View Figure 2–7 ) evenly and slightly convex, sparsely punctate, distance between punctures 1.0 to 2.0 × diameter of puncture. Metanotum rugose punctate. Epicnemial carina ( Fig. 7 View Figure 2–7 ) distinct ventrally and obscure dorsally, not prominent in front of median longitudinal suture. Mesopleuron ( Figs 7 View Figure 2–7 , 13 View Figures 13–17 , 23 View Figures 19–24 ) largely densely punctate reticulate and pubescent; dorsal anterior portion in front of subtegular ridge with short irregular longitudinal wrinkles; below subtegular ridge and in front of speculum slightly rugulose; ventroposterior portion below episternal scrobe with short wrinkles, more or lese shiny. Speculum ( Fig. 13 View Figures 13–17 ) relatively large, as long as (or 0.6 × as wide as) length of tegula, polished and glabrous. Mesopleural furrow distinctly foveolate. Mesosternum ( Fig. 7 View Figure 2–7 ) along medial sternal groove more or less polished, with a few sparse punctures laterally and centrally. Median longitudinal suture of mesosternum distinct, inner side with short transverse carinae. Metapleuron ( Fig. 6 View Figure 2–7 ) scabrous, evenly convex, dorsal portion strongly rugose, central portion punctate reticulate, ventral portion irregularly rugulose. Submetapleural carina present on anterior 0.4 of metapleuron, weakly convex, posterior 0.6 of submetapleural carina replaced by wrinkles. Metasternum 0.8 × as long as mesosternum, with irregular transverse wrinkles. Propodeum elongate ( Figs 6 View Figure 2–7 , 9 View Figures 8–12 , 14 View Figures 13–17 ), strongly rugose; median longitudinal carinae strong and reaching to posterior end of propodeum, anteriorly convergent, with transverse wrinkles in between; dorsal area with irregular wrinkles; pleural area with transverse wrinkles; pleural carina complete and sharp. Propodeal spiracle elongate, 2.5 × as long as wide, separated from pleural carina by 1.0 × its own longest diameter.
Wings. Fore wing ( Fig. 11 View Figures 8–12 ) with vein 1cu-a distad of M&RS by 0.2 × length of 1cu-a; 2rs-m basad 2m-cu by 0.83 × length of 2rs-m. Hind wing with 8 distal hamuli; CU & cu-a reclivous, distinctly intercepted at upper 0.27; distal abscissa of CU weakly pigmented.
Legs. Fore and mid legs slender. Hind coxa elongate, 3.2 × as long as its maximum width, sparsely punctulate, punctures on dorsal area sparser. Hind femur ( Fig. 17 View Figures 13–17 ) 2.8 × as long as its maximum width. Hind tibia 1.9 × as long as hind femur; tibial spurs very short, inner spur equal to outer spur, 0.18 × length of hind basitarsus. Ratio of length of first to fifth hind tarsomeres as follows: 5: 2.3: 1.5: 1.0: 2.1. Tarsal claw strongly bent ( Fig. 10 View Figures 8–12 ).
Metasoma. First tergite ( Fig. 14 View Figures 13–17 ) 3.0 × as long as its apical width, dorsally rugose punctate, with a longitudinal median furrow on anterior 0.4, laterally strongly rugose; sclerotized part of first sternite extending behind spiracle, 0.63 × as long as tergite; spiracle convex, located at anterior 0.4. Second tergite ( Fig. 15 View Figures 13–17 ) 1.42 × as long as posterior width, anterior 0.2 of tergite granulate punctate, remainder with fine punctures. Third tergite ( Fig. 16 View Figures 13–17 ) finely punctulate, anteriorly with fine leathery texture, anterior lateral corner with a small thyridium on each side. Ovipositor sheath ( Fig. 12 View Figures 8–12 ) 0.25 × as long as hind tibia.
Colour. Body mainly black. Head black, face with a pair of obscure yellow marks laterally just above tentorial pits; these yellow marks are very distinct in female paratypes ( Fig. 20 View Figures 19–24 ) and hardly discernible in holotype ( Fig. 2 View Figure 2–7 ). Mandible testaceous with lower margin and apical teeth black. Stipes and prementum black. Labial and maxillary palpi yellow. Antenna with scape and pedicel black, flagellum dorsally blackish brown and ventrally yellowish brown. Fore and mid legs buff with coxae black; hind leg black, apex of trochanter yellow, trochantellus blackish brown, proximal base of hind femur ventrally buff, proximal half of hind tibia ventrally dull yellow and dorsally dark brown to blackish brown, apical half of hind tibia black. Hind margins of tergites 1-7 narrowly yellow. Tegula black. Wings hyaline, with veins and pterostigma blackish brown.
Variation.
Body length 7.0-10.0 mm. Antenna with 19-20 flagellomeres; yellow spots on face obscure to distinct ( Fig. 2 View Figure 2–7 , 20 View Figures 19–24 ).
Male ( Fig. 18 View Figure 18 , 19 View Figures 19–24 , 21 View Figures 19–24 , 22 View Figures 19–24 ). Body length 8.2 mm, fore wing 5.4 mm. similar to female. Differences from female as follows: antenna ventrally yellow to yellowish brown; face and clypeus (except lower margin blackish) yellow ( Fig. 19 View Figures 19–24 ), sometimes with a small blackish spot on face centrally; frons with several transverse wrinkles just above antennal sockets; first tergite centrally with two distinct carinae which extend to posterior 0.7 of tergite, posterior tips of carinae irregularly branched. Paramere apically truncate.
Variation.
Body length 6.2-8.2 mm, fore wing length 4.6-5.2 mm. Fore wing with vein 1cu-a opposite or slightly distad to M&RS.
Etymology.
The new specie is named in honour of Prof. He Junhua from Zhejiang University in recognition of his years of dedicated and conscientious performance in the study of Chinese Hymenoptera , and also for the celebration of his 90th birthday.
Comparison.
The new species is similar to the genotype, B. sinica , in its overall appearance and colour pattern. But it can be distinguished from B. sinica by the face having two obscure or distinct yellow marks (the face of B. sinica has the ventral inner orbits, clypeus and a stripe passing through the anterior tentorial pits yellow); the mandible weakly narrowed from middle toward the apex, with middle width of mandible 0.57 × as wide as the basal width of mandible ( B. sinica with the mandible strongly narrowed from middle toward the apex, with middle width of mandible 0.26 × as wide as the basal width of mandible, measurements based on the figure of Sheng et al. (2012); the central part of the face with sparse punctures (with dense punctures in B. sinica ); the mesosternum polished, with sparse punctures ( B. sinica has the mesosternum densely punctate); and the fore wing vein 1cu-a usually distinctly distad of M&RS (1cu-a opposite M&RS in B. sinica ).
Biology.
The species was reared from the larvae of Stenocephus fraxini Wei ( Hymenoptera , Cephidae ) in Northern China.
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.