Nephrotoma geniculata Yang & Yang, 1987
publication ID |
https://doi.org/10.3897/zookeys.1251.144156 |
publication LSID |
lsid:zoobank.org:pub:FDDE25B3-48C5-4B23-BC7C-5EE61980D95F |
DOI |
https://doi.org/10.5281/zenodo.17062932 |
persistent identifier |
https://treatment.plazi.org/id/2E5CE128-A545-53A5-9264-85FB614709F1 |
treatment provided by |
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scientific name |
Nephrotoma geniculata Yang & Yang, 1987 |
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Nephrotoma geniculata Yang & Yang, 1987 View in CoL
Figs 16–18 View Figures 16–18 , 19–23 View Figures 19–23 , 24–26 View Figures 24–26 , 27–29 View Figures 27–29
Nephrotoma geniculata Yang & Yang, 1987: 131 View in CoL .
Material examined.
China – Hubei Prov. • 1 ♂, 2 ♀♀; Shennongjiasongbai , 700–800 m a. s. l.; 23 Jun. 1984; X. L. Wang leg.; CAU Df 000404 , Df 000405 . – Qinghai Prov. • 1 ♂; Haidong, Shenba Village ; 2455 m a. s. l.; 36.2496°N, 102.5274°E; 29 Jun. 2019; X. Li leg.; CAU TN 2304237 GoogleMaps • 7 ♂♂, 4 ♀♀; Menyuan, Sigou ; 2489 m a. s. l.; 37.1362°N, 102.3763°E; 18 Jul. 2023; X. Wang leg.; light trap; XJAU TN 2309123 to TN 2309133 GoogleMaps • 9 ♂♂, 4 ♀♀; Huzhu, Bazha Tibetan Autonomous Township ; 2286 m a. s. l.; 36.9845°N, 102.4326°E; 18 Jul. 2023; X. Wang leg.; light trap; XJAU TN 2309021 to TN 2309033 GoogleMaps • 1 ♂; Huzhu, Weibei Road ; 2296 m a. s. l.; 36.9446°N, 102.4677°E; 21 Jul. 2023; X. Wang leg.; light trap; XJAU TN 2309135 GoogleMaps • 3 ♂♂, 2 ♀♀; Menyuan, Gangqing Road ; 2370 m a. s. l.; 37.1008°N, 102.3439°E; 23 Jul. 2023; X. Wang leg.; light trap; XJAU TN 2309259 to TN 2309263 GoogleMaps • 1 ♂, 1 ♀; Menyuan, Sigou ; 2369 m a. s. l.; 37.1245°N, 102.3561°E; 23 Jul. 2023; X. Wang leg.; light trap; XJAU TN 2309264 to TN 2309265 GoogleMaps .
Diagnosis.
Body yellow. Occipital marking drop-shaped, apically pale brown. Antenna reaching the base of abdomen when bent backward. Wing pale brown, cell m 1 petiolate. Tergite 9 posteriorly with four projections, median projections broad and covered with short, tiny black spines; lateral projections horn-shaped. Sternite 8 posteriorly with a bent, flattened protuberance, narrowing downwards in lateral view. Clasper of gonostylus with dorsal crest bearing a sclerotized and cristate projection.
Redescription.
Male. Body length 11.2–13.2 mm, wing length 12.1–13.2 mm, antenna length 4.7–5.1 mm ( N = 23). Present description based on specimens preserved in alcohol.
Head (Figs 16 View Figures 16–18 , 17 View Figures 16–18 ). Mostly yellow, occipital marking drop-shaped, apically pale brown. Nasus dark brown. Rostrum brown. Head with black setae. Antenna 13 - segmented, reaching the base of abdomen when bent backward; scape yellow, pedicel and first flagellar segment yellowish brown, the rest of segments brown. Verticils about twice shorter than the corresponding segment. Base of flagellar segments broader. Terminal segment of flagellum round. Palpi brownish, terminal segment pale, darkened at base.
Thorax (Figs 16 View Figures 16–18 , 17 View Figures 16–18 ). Mostly yellow. Pronotum yellow, black middorsally. Prescutum and presutural scutum with three longitudinal black stripes; lateral stripe apically bent outward. Postsutural scutum yellow in the middle, each lobe with large black spot. Scutellum brown, variegated with a round black stripe at the middle-lower part. Mediotergite with posterior margin blackened. Anepisternum and katepisternum basally each with a large brown spot. Anepimeron pale brown apically; katepimeron with small median dark yellow spot. Meron pale brown basally. Legs yellow. Coxae yellow, variegated with brown spots at the base. Apices of tibiae and femora dark brown, tarsal segments dark brown. Wing pale brown with a distinct dark brown pterostigma and macrotrichiae; pale brown shadow at vein R 4 + 5 and crossvein r-m; cell m 1 petiolate (Fig. 18 View Figures 16–18 ). Halter with stem brown; knob pale yellow with a dark brown margin (Fig. 16 View Figures 16–18 ).
Abdomen (Fig. 16 View Figures 16–18 ). Mainly yellow. Abdominal tergites with an interrupted trapezoidal black stripe at the middle and two continuous black stripes on both sides; the median stripe broader than the lateral stripes. Abdominal segments 8–9 black.
Hypopygium (Figs 19–23 View Figures 19–23 ). Tergite 9 posteriorly strongly sclerotized with four projections: median projections broad, covered with short, tiny black spines, separated by narrow incision; lateral projections in the shape of narrow, inwardly curved horns; additional rounded projections on each side (Fig. 21 View Figures 19–23 ). Sternite 8 posteriorly with a bent, flattened protuberance, narrowing downwards in lateral view; apex pointed in ventral view (Fig. 20 View Figures 19–23 ). Sternite 9 posteriorly with sparse setae, and a U-notch sclerotized projection at the middle in ventral view (Fig. 20 View Figures 19–23 ). Gonocoxite separated from sternite 9, nearly rectangular in shape with smooth margins (Fig. 19 View Figures 19–23 ). Clasper of gonostylus with a large concavity at the base; beak short and obtuse; dorsal crest sclerotized with cristate projection; the margin extending from the beak to the lower beak, strongly sclerotized (Fig. 22 View Figures 19–23 ). Lobe of gonostylus broadened at basal half, apical half narrowed (Figs 19 View Figures 19–23 , 23 View Figures 19–23 ). Semen pump brownish yellow (Figs 24–26 View Figures 24–26 ). Posterior immovable apodeme directed backward, tip inward; compressor apodeme flattened, fan-shaped, forming a 35 ° angle with the posterior immovable apodeme, with deep median incision. Anterior immovable apodeme triangular, with a sharp tip.
Female. Body length 15.4–16.7 mm, wing length 14.1–14.9 mm, antenna length 3.6–3.7 mm ( N = 11). Resembles male in head, thorax and abdomen. Female antenna second pedicel yellow. Tergite 8 and 9 with red-brown margins, the rest yellow (Figs 27–29 View Figures 27–29 ). Sternite 9 with red-brown round spots on the middle side.
Ovipositor (Figs 27–29 View Figures 27–29 ). Yellowish brown. Cercus narrowed toward tip (Figs 27 View Figures 27–29 , 28 View Figures 27–29 ). Hypogynial valve curved downward apically (Figs 27 View Figures 27–29 , 29 View Figures 27–29 ).
Elevation range in China.
Adults were collected at altitudes ranging from 2300 m to 2500 m.
Period of activity.
Adults are flying in June – July.
Distribution.
China ( Guizhou; Inner Mongolia; Ningxia; Qinghai: Minle, Menyuan, Huzhu, Qilian; Sichuan).
Remarks.
Nephrotoma geniculata is similar to N. parvirostra Alexander, 1924 , in the shape of tergite 9 and the lobe of the gonostylus. However, it can be distinguished by the following features: in N. geniculata , sternite 8 posteriorly exhibits a bent, flattened protuberance. In N. parvirostra , sternite 8 posteriorly lacks any prominent protuberance but Sternite 9 posteriorly possesses a lamellate protuberance ( Oosterbroek 1985; Yang and Yang 1987 a).
CAU |
China Agricultural University |
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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Nephrotoma geniculata Yang & Yang, 1987
Wang, Xue, Ren, Jinlong, Yang, Ding & Chen, Zhenning 2025 |
Nephrotoma geniculata
Nephrotoma geniculata Yang & Yang, 1987: 131 . |