Corresponding author: Ding Yang (
Academic editor: M. Ivković
The subfamily
Qilemoge, Chang W, Yang D (2018) Two new species of the genus
The subfamily
Gansu Province (32°31'–42°57'N, 92°13'–108°46'E) is located in the northwest of China and lies between the Tibetan Plateau and the Loess Plateau. The topography here is quite complicated, with mountains, basins, and deserts intersecting each other, which consequently also brings a complexity of the climates to this region. Due to a lack of precipitation, the northern part of Gansu province is dry and harsh all year round. However, the climate in the south of Gansu province is wet and mild, which leads to an abundant vegetation. These various environments contribute to the high species diversity of Gansu province. However, the investigation of the long-legged fly fauna here is still underway. In this paper two new species of the
The specimens upon which this study is based, were collected from Gansu province of China in 2015 by sweeping nets. All specimens are deposited in the Entomological Museum of
1 | Mid-posterior area of mesonotum and mid-basal area of scutellum blackish; CuAx less than 0.47 |
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– | Mid-posterior area of mesonotum and mid-basal area of scutellum yellow, without blackish area; CuAx equal to 0.47 |
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2 | First flagellomere nearly quadrate (Fig. |
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– | First flagellomere semicircular; cercus serrated apically |
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3 | First flagellomere blunt apically; |
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– | First flagellomere with acute apical corner ( |
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4 | Squama with brown hairs; hypandrium long, without short strip-like lateral protuberance |
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– | Squama with black hairs; hypandrium short, with short strip-like lateral protuberance (Figs |
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5 | Arista brown; hypandrium basally with short hook-like lateral protuberance |
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– | Arista yellow; hypandrium basally without short hook-like lateral protuberance |
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Thorax and abdomen mainly yellow. Face narrower than frons, vertex flat,
First flagellomere semicircular, distinctly wider than long (
Palaearctic: China (Shaanxi).
First flagellomere nearly quadrate. Mid-posterior area of mesonotum yellow. Mid-basal area of scutellum yellow. 1st to 4th tergites of abdomen pale yellow. Dorsal lobe of surstylus wide basally and sharp towards tip, with one bristle apically; ventral lobe of surstylus wide basally, with two apical protuberances; cercus small, nearly quadrate, weakly concave at middle dorsally; hypandrium straight, round apically.
Male (Fig.
Habitus, lateral view.
Thorax yellow with pale gray pollen. Hairs and bristles on thorax black. Pteropleuron and latero-tergite each with a single black spot. Five strong
Abdomen yellow with pale gray pollen, tergites 1–4 pale yellow. Hairs and bristles on abdomen black. Male genitalia (Figs
Female. Unknown.
Holotype male, CHINA, Gansu, Tewo, Lazikoulinchang, Laolazi, collected by sweeping nets in grassland, 2015.VII.26, Qingxia Zhou (
Palaearctic: China (Southern wet part of Gansu).
The new species is somewhat similar to
The specific name refers to the type locality of Tewo.
First flagellomere nearly quadrate. Mid-posterior area of mesonotum blackish. Mid-basal area of scutellum blackish. Dorsal lobe of surstylus wide basally, nearly quadrate, apically concaved with two bristles; ventral lobe of surstylus wide basally, band-like, apically rounded with two bristles; cercus ovate basally, apically finger-like with bristles; hypandrium rather short with short strip-like lateral protuberance.
Male (Fig.
Thorax yellow with pale gray pollen. Hairs and bristles on thorax black. Mid-posterior area of mesonotum blackish; mid-basal area of scutellum blackish; pteropleuron and latero-tergite each with one black spot. 5 strong
Abdomen yellow with pale gray pollen. Hairs and bristles on abdomen black. Male genitalia (Figs
Female (Fig.
Holotype male, CHINA, Gansu, Tianshui, Dangchuan Linchang, Maicaogou; collected by sweeping nets in grassland, 2015.VII.17, Xiaoli Li (
Palaearctic: China (Southern wet part of Gansu).
The new species is somewhat similar to
The specific name refers to the type locality Gansu.
First flagellomere slightly wider than long, nearly quadrate, acute apically (
Palaearctic: China (Henan).
Antenna and arista wholly yellow. First flagellomere as long as wide, nearly quadrate (
Palaearctic: China (Shaanxi).
Bristles on head mostly yellow, but those on thorax black. First flagellomere nearly quadrate. Mid tarsomere one with two short weak
Palaearctic: China (Tibet).
We are very grateful to Ms. Xiaoli Li and Ms. Qingxia Zhou (Beijing) for collecting the specimens. Thanks to Dr. Daniel J. Bickel for his help in writing in English. Two anonymous reviewers are thanked for providing useful comments on an earlier draft of this paper. The data in this research comes from the database of National Digital-Museum of Animal Specimens; this project was supported by key project of Science-technology basic condition platform from the Ministry of Science and Technology of China (No.2005DKA21402).