Corresponding authors: Ding Yang (
Academic editor: M. Ivković
Previously only one species of the genus
Wang N, Wang B, Yang D (2015) Two new species of the genus
The genus
Only one species,
Distribution map of
Type specimens are deposited in the Entomological Museum of China Agricultural University (CAU), Beijing. Morphological terminology generally follows
(modified from
1 | Only posterior npl present, anterior npl absent ( |
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– | Anterior and posterior npl present |
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2 | Discal cell with 1-2 accessory cellulae at anterodistal corner ( |
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– | Discal cell without accessory cellulae at anterodistal corner ( |
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3 | 6 dc; mid femur without spine-like av |
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– | 5 dc; mid femur with 3-5 spine-like av at basal 1/4 |
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4 | Empodium and pulvilli reduced into minute protuberance ( |
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– | At least empodium well developed, hair-like and ventrally ciliated |
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5 | ph near transverse suture; vt absent ( |
6 |
– | ph near h; vt present | 8 |
6 | Mid and hind femora without long hairs and bristles; mid tibia long ciliated |
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– | Mid femur with thick clump of erect golden yellow pv hairs between basal 1/3 and 1/2, hind femur with row of erect av except basal and apical 1/4; mid tibia simple |
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7 | Jet-black nodule of discal crossvein about 5 times as long as wide; 5 accessory cellulae formed at anterodistal corner of discal cell; cercus uniformly short yellow haired |
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– | Jet-black nodule of discal crossvein about 2.6 times as long as wide; 3 accessory cellulae formed at anterodistal corner of discal cell; cercus with long golden hairs apically |
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8 | Discal crossvein strongly sinuate, S-shaped; anterodistal corner of discal cell with an accessory cellula ( |
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– | Discal crossvein nearly straight; anterodistal corner of discal cell without accessory cellula ( |
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9 | Lateral portion of abdominal tergite 5 projected into an elongate process; mid tibia without row of erect fine posterior bristles |
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– | Lateral portion of abdominal tergite 5 expanded into a broad triangular lobe; mid tibia with row of erect fine posterior bristles |
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10 | Mid femur ventrally weakly raised subbasally, with modified hairs and bristles |
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– | Mid femur evenly flattened ventrally throughout and nearly bare |
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11 | Wing shape normal, without finger-like lobe at posterior margin |
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– | Wing shape anomalous, with a finger-like lobe at posterior margin ( |
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12 | Fore tarsomere 1 with an obtuse apicoventral corner, fore tarsomere 2 without finger-like process near extreme base ( |
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– | Fore tarsomere 1 with a nearly acute apicoventral process, fore tarsomere 2 with a short finger-like ventral process near extreme base (figs 2, 5) |
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13 | Fore tarsomere 1 with apicoventral corner rounded ( |
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– | Fore tarsomere 1 with apicoventral corner angulated ( |
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14 | Pulvilli atrophied, bare ( |
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– | Pulvilli well developed, pad-like, pilose |
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15 | Fore tarsomere 1 not furcate apically, fore tarsomere 2 shorter than tarsomere 1 ( |
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– | Fore tarsomere 1 furcate apically, fore tarsomere 2 much longer than tasomere 1 ( |
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16 | Wing without dark spot at discal crossvein; fore tarsomere 1 swollen apically ( |
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– | Wing with a circular grayish spot at discal crossvein; fore tarsomere 1 not swollen apically ( |
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17 | Fore tarsomere 1 weakly dilated apically, 1.5 times thicker than its base ( |
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– | Fore tarsomere 1 strongly dilated apically, 3 times thicker than its base ( |
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18 | Cercus 3 times as long as wide, parallel-sided ( |
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– | Cercus about 1.5 times as long as wide, rather wide with narrow base ( |
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19 | Only 4 dc ( |
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– | 5–6 dc |
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20 | Leg mostly yellowish |
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– | Legs darkened, at most trochanters and knees tinged yellow |
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21 | vt absent; fore tarsomere 1 without short erect av ( |
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– | vt present; fore tarsomere 1 with row of short erect av ( |
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22 | Anterior npl absent |
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– | Anterior npl present |
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23 | Fore coxa subapically raised at anterior surface |
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– | Fore coxa normal |
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24 | Fore femur not strongly swollen basally ( |
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– | Fore femur strongly swollen basally ( |
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25 | Face without grayish median stripe |
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– | Face with a narrow grayish median stripe |
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26 | R4+5 distinctly thicker than R2+3; palpus at most 0.9 times as long as eye height |
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– | R4+5 thinner than R2+3; palpus 1.1–1.2 times as long as eye height |
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27 | Palpus enlarged, about 3/4 as long as eye height ( |
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– | Palpus not enlarged, about 1/3 as long as eye height |
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28 | Lower postocular bristles including posteroventral hairs on head yellow |
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– | Hairs and bristles on head wholly black ( |
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29 | First flagellomere triangular; arista subbasal |
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– | First flagellomere not triangular; arista apical, subapical or dorsal |
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30 | vt much shorter and thinner than pvt; wing broadly darkened along veins; fore tarsomere 1 slender ( |
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– | vt almost as strong as pvt; wing not broadly darkened along veins; fore tarsomere 1 distinctly thickened apically ( |
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31 | Discal crossvein straight, without jet-black nodule or stripe ( |
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– | Discal crossvein bent, with a jet-black nodule or stripe |
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32 | Mid and hind femora without ventral bristles; cercus long finger-like in lateral view ( |
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– | Mid and hind femora with ventral bristles; cercus short, subtriangular in lateral view ( |
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33 | 5 dc |
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– | At least 6 dc |
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34 | M without dark cloud, discal crossvein with narrow jet-black nodule ( |
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– | M with a dark cloud, discal crossvein with rounded jet-black nodule ( |
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35 | First flagellomere short circular, nearly as long as wide ( |
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– | First flagellomere distinctly or strongly elongated, distinctly longer than wide ( |
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36 | Mid femur without very long yellow ventral bristles at base; first flagellomere with somewhat tapering apex ( |
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– | Mid femur with several very long yellow ventral bristles at base ( |
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37 | First flagellomere 1 apically strongly narrowed, not trapezoid |
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– | First flagellomere 1 nearly trapezoid |
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38 | Arista nearly apical ( |
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– | Arista subapical ( |
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39 | First flagellomere much elongated, about 2 times longer than wide ( |
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– | First flagellomere 1.3–1.5 times longer than wide ( |
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40 | Arista located at dorsoapical corner of first flagellomere ( |
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– | Arista dorsal ( |
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41 | Arista subapical (Fig. |
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– | Arista dorsal; vt extremely reduced, as long as diameter of lateral ocellus |
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42 | vt as strong as pvt; first flagellomere 1.5 times longer than wide ( |
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– | vt shorter and weaker than pvt; first flagellomere 1.3 times longer than wide (Fig. |
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vt rather short, 0.5 times as long as oc. First flagellomere somewhat triangular, 1.5 times longer than wide; arista apical (Fig.
Male. Body length 8.0 mm; wing length 8.5 mm.
Head metallic green with pale gray pollen. Eyes widely separated; face widened towards clypeus. Hairs and bristles on head black; lower postocular bristles including posteroventral hairs pale, mostly very long. Ocellar tubercle distinct, with pair of long strong oc, without posterior hairs; vt rather short, 0.5 times as long as oc, nearly as long as pvt. Antenna (Fig.
Thorax metallic green with pale gray pollen; mesoscutum with two pairs of dark brown longitudinal spots (middle pair strip-like). Hairs and bristles on thorax black; 6 mostly hair-like dc except posteriormost 1 dc longest and thick; acr absent; 1 h and 1 very short hair, 1 ph, 2 npl, 1 sa, 1 psa; scutellum with pair of long sc. Propleuron with short pale hairs on upper portion and long pale hairs on lower portion. Legs nearly entirely black except fore trochanter dark yellow; claws well developed, empodium and pulvilli reduced. Fore trochanter elongated, with hook-like posterior process (Fig.
Abdomen distinctly longer than head and thorax combined, metallic green with pale gray pollen. Abdomen with pale pubescence. Tergite 5 with lateral portion slightly extended downward. Sternite 1 with a nearly acute process at middle; sternite 4 medially with an obtuse anterior process and 2 short thin, contiguous posterior processes bearing bundle of brown hairs. Hypandrium not distinctly swollen.
Male genitalia (Fig.
Female. Unknown.
Holotype: male, China: Tibet, Nyingchi (
China (Tibet).
The new species belongs to the
The specific name refers to the fore tarsomere 1 with a nearly acute apicoventral process.
First flagellomere (
China (Tibet), Nepal.
This species belongs to the
vt rather short and weak, 0.4 times as long as oc. First flagellomere somewhat quadrate, 1.3 times longer than wide; arista subapical (Fig.
Male. Body length 6.4 mm; wing length 7.6 mm.
Head metallic green with pale gray pollen. Eyes widely separated; face widened towards clypeus. Hairs and bristles on head black; lower postocular bristles including posteroventral hairs pale, mostly very long. Ocellar tubercle distinct, with pair of strong oc, without posterior hairs; vt rather short and weak, 0.4 times as long as oc, 0.7 times as long as pvt. Antenna (Fig.
Thorax metallic green with pale gray pollen; mesoscutum with two pairs of dark brown longitudinal spots (middle pair strip-like). Hairs and bristles on thorax black; 6 slightly long dc, posteriormost dc longest; acr bristles absent; 1 h and 1 short bristle, 1 ph, 2 npl, 1 sa, 1 psa; scutellum with pair of long sc and 4 very short marginal hairs (2 hairs between 2 sc). Propleuron with short pale hairs on upper portion and mostly long pale hairs on lower portion. Legs entirely black; claws well developed, empodium and pulvilli distinct. Hairs and bristles on legs black except those on coxae pale; fore coxa with bundle of short dense black anterior hairs bristle-like at extreme tip; hind coxa apically with 4 long blackish anterior hairs bristle-like. Mid and hind femora with some pale ventral hairs. Fore femur with two rows of black ventral bristles (longest ones slightly shorter than femur thickness), and with 3 long posterior bristles at extreme base. Mid femur basally with nearly two close rows of long pale ventral hairs (longest ones about 3 times as long as femur thickness), subbasally with 4 black short thick av. Hind femur with about two close rows of long pale ventral hairs (longest ones about 3 times as long as femur thickness) and with 5 black short thick av. Fore tibia with 4 ad and 4 pv on apical half; apically with 3 bristles. Mid tibia with 3 ad and 2 pd; apically with 3 bristles. Hind tibia with 4 ad, 5 pd, 3 av and 6 pv; apically with 3 bristles. Fore tarsomere 1 with row of short dense erect av spines and one row of dense thin pv (longer than av). Relative lengths of tibia and five tarsomeres: LI 3.3: 1.6: 1.6: 0.8: 0.55: 0.7; LII 5.8: 2.9: 1.1: 0.75: 0.5: 0.75; LIII 7.1: 3.2: 1.9: 1.2: 0.6: 0.8. Wing (Fig.
Abdomen rather short, nearly as long as head and thorax combined, metallic green with pale gray pollen. Abdomen with pale pubescence except dorsum with some black hairs at middle. Tergites 4 distinctly and tergite 5 weakly with lateral portion extended downward; lateral portion of tergite 4 with very long hairs apically bent, slightly shorter than those on sternite 3, but lateral portion of tergite 5 only with short hairs.
Male genitalia (Fig.
Female. Unknown.
Holotype: male, China: Tibet, Nyingchi (
China (Tibet).
The new species belongs to the
The specific name refers to the type locality Tibet.
We are very grateful to Dr. Zhaohui Pan (Nyingchi) for collecting specimens and to Ms. Chufei Tang (Beijing) for her help during the study. Two anonymous reviewers are thanked for providing useful comments on an earlier draft of this paper. The research was funded by the National Natural Science Foundation of China (41301049, 31272354), a special fund for basic scientific research project in the central scientific research institutes (Institute of Grassland Research of CAAS) (1610332014012), and the Ministry of Science and Technology of the Republic of China (2014FY210200).