Antocha ( Antocha ) bimaculata, Qiao & Wang & Yang & Ren, 2025
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publication ID |
https://doi.org/10.3897/zookeys.1256.135717 |
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publication LSID |
lsid:zoobank.org:pub:A6CBD264-7DF2-42F6-A076-31C8BEA2505C |
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DOI |
https://doi.org/10.5281/zenodo.17401129 |
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persistent identifier |
https://treatment.plazi.org/id/9C6909EB-8F01-5F36-83FF-A6AAE1BD1188 |
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treatment provided by |
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scientific name |
Antocha ( Antocha ) bimaculata |
| status |
sp. nov. |
Antocha ( Antocha) bimaculata sp. nov.
Figs 3 View Figure 3 , 4 View Figure 4
Type material.
Holotype: China – Qinghai Prov. • ♂; Menyuan, Laohugou ; 3029 m a. s. l.; 37.4478°N, 101.5622°E; 26 Jul. 2023; X. Wang leg.; light trap; XJAU GoogleMaps . Paratypes: China – Qinghai Prov. • 1 ♂; Menyuan, Sigou ; 2405 m a. s. l.; 37.1159°N, 102.3499°E; 18 Jul. 2023; X. Wang leg.; light trap; XJAU GoogleMaps • 1 ♂; Menyuan, Sanchakou ; 2709 m a. s. l.; 37.2078°N, 102.1880°E; 21 Jul. 2023; X. Wang leg.; XJAU GoogleMaps • 2 ♂♂; Menyuan, Heiyegou ; 2863 m a. s. l.; 37.2527°N, 102.3424°E; 23 Jul. 2023; X. Wang leg.; XJAU GoogleMaps • 2 ♂♂; Menyuan, National Highway 569 ; 2580 m a. s. l.; 37.2334°N, 102.0173°E; 24 Jul. 2023; X. Wang leg.; XJAU GoogleMaps .
Diagnosis.
Body brown to dark brown. Antenna long, reaching wing base if bent backward. Prescutum and presutural scutum dark brown, with four dark stripes. Mediotergite dark brown, about twice the length of scutellum, with oval, brown spot at posterior margin. Wing without stigma; crossvein m-cu before M fork, distance about 1 / 5 its own length. Tergite 9 with posterior margin flat, shallow depression at middle. Outer gonostylus slightly curved, distal half blackened, apex blunt. Aedeagal complex with a large sheath at both ends, formed by the apical part of the parameres.
Description.
Male. Body length 6.66–7.41 mm, wing length 7.61–8.31 mm, antenna length 1.13–1.34 mm ( N = 6).
Head (Fig. 3 a, b View Figure 3 ). Mostly dark brown. Vertex with sparse, brown setae along eye margin. Antenna brown, 16 - segmented, reaching wing base if bent backward; scape cylindrical, enlarged; flagellomeres dark brown, terminal four segments pale brown (Fig. 3 a, b View Figure 3 ).
Thorax (Fig. 3 a, c View Figure 3 ). Mostly dark brown. Pronotum dark brown. Prescutum and presutural scutum dark brown, with four indistinct dark stripes. Postsutural scutum dark brown, middle area yellowish brown. Scutellum dark brown with yellowish-brown band at middle. Mediotergite long, dark brown, twice as long as scutellum, posterior margin with two oval, brown spots (Fig. 3 c View Figure 3 ). Legs with fore-coxae dark brown; mid-coxae and hind-coxae lighter, pale-brown markings; trochanters pale brown, with dark-brown margins; femora brown, slightly swollen distally; tibiae brown, with dark-brown apices; tarsi dark brown (Fig. 3 a View Figure 3 ). Wing gray subhyaline, without stigma; veins generally brown, R 1 and Sc with apices pale yellow; crossvein m-cu before M fork, distance about 1 / 5 its length; cell dm approximately twice as long as wide (Fig. 3 d View Figure 3 ). Halter with stem gray, knob brown in distal half.
Abdomen (Fig. 3 a View Figure 3 ). Mainly dark brown. Tergites 1–6 grayish brown, tergites 7–8 dark brown. Sternites 1–6 pale brown, sternites 7–8 dark brown. Abdominal setae brownish.
Hypopygium (Figs 3 e View Figure 3 , 4 View Figure 4 ). Mostly brown. Tergite 9 dark brown, wider than long; posterior margin flat, strongly sclerotized, densely covered with setae, with shallow depression at middle (Fig. 4 a View Figure 4 ). Gonocoxite nearly cylindrical, densely covered by long, brown setae (Fig. 4 View Figure 4 ). Outer gonostylus slightly curved, distal half blackened, apex blunt. Inner gonostylus slightly curved, with short, sparse setae. Aedeagal complex with parameres exhibiting a distinct apical excavation, large sheath at both ends, base of paramere elongated; inner branch of paramere elongated, membranuous, apically rounded; interbase short, wider than inner branch of paramere and aedeagus, apically blunt. Aedeagus rod-shaped (Figs 3 e View Figure 3 , 4 a View Figure 4 ).
Female. Unknown.
Elevation range in China.
Adults were collected at altitudes ranging from 2000 m to 3000 m.
Period of activity.
Adults were collected only in late July.
Distribution.
China ( Qinghai: Menyuan).
Etymology.
The specific name (from Latin bimaculatus (adj., meaning “ two spots ”) refers to the two spots at the posterior margin of mediotergite.
Remarks.
This new species closely resembles A. ( A.) styx Alexander, 1930 in body coloration, the morphology of male head, wings and hypopygium. However, it can be distinguished from the latter based on the following characteristics: in A. ( A.) bimaculata sp. nov., the flagellomeres are ellipsoidal, with the last two segments being elongated; the prescutum and presutural scutum are entirely dark brown, featuring four indistinct dark stripes; the mediotergite is dark brown, with two oval brown spots on the posterior margin; and the outer gonostylus without emargination on its inner margin. In A. ( A.) styx , the flagellomeres decrease in size towards the apex; the prescutum and presutural scutum are dark brown with lighter areas laterally and three confluent blackish-brown stripes; the mediotergite is blackish brown, with indistinct brownish spots on both sides; and the outer gonostylus has a small emargination on its inner margin (Podenas and Yang 2015).
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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