Research Article |
Corresponding author: Xiang-Sheng Chen ( chenxs3218@163.com ) Academic editor: Mike Wilson
© 2017 Yan Zhi, Lin Yang, Pei Zhang, Xiang-Sheng Chen.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Zhi Y, Yang L, Zhang P, Chen X-S (2017) Taxonomic study of the genus Neocarpia Tsaur & Hsu, with descriptions of two new species from China (Hemiptera, Fulgoromorpha, Cixiidae). ZooKeys 695: 19-35. https://doi.org/10.3897/zookeys.695.12809
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The cixiid planthoppers genus Neocarpia Tsaur & Hsu, 2003 is reviewed. Two new species, N. acutata Zhi & Chen, sp. n. and N. reversa Zhi & Chen, sp. n., are described and illustrated from the southwest of China (Yunnan) to give the genus seven species in total. Female genitalia of four Chinese species are described and illustrated for the first time. A key to all known species of Neocarpia based on male genitalia, and a key to Chinese species (except for N. maai) based on female genitalia, are provided. The morphological characteristics of the posterior vagina, utilized to distinguish female species of Neocarpia, are also discussed.
Female genitalia, Fulgoroidea , morphology, Oriental region, taxonomy
Herein, two new species of Neocarpia are described and illustrated from Yunnan province, China. Female genitalia of four Chinese species are described and illustrated for the first time. The genus Neocarpia now contains seven species, including five from China. A key to species based on male genitalia, and to Chinese species (except for N. maai) based on female genitalia, are provided. The morphological characters of the posterior vagina are utilized to distinguish female species of Neocarpia.
The morphological terminology and measurements follow
The type specimens and other specimens examined are deposited in the Institute of Entomology, Guizhou University, Guiyang, Guizhou Province, China (
Neocarpia
Tsaur & Hsu, 2003: 440;
Neocarpia maai Tsaur & Hsu, 2003, by original designation.
Head slightly narrower than pronotum in dorsal view. Vertex slightly widened to posterior emargination, broader than long and without subapical carina, lateral carinae moderately elevated. Frons with median carina; frontoclypeal suture generally angled or semicircular. Clypeus with well-developed median carina. Rostrum distinctly surpassing hind coxae. Pronotum short with intermediate carinae curved along posterior margins of eyes. Mesonotum tricarinate. Forewing in resting position steeply tectiform, widened towards apex, with rounded apical margin; Sc+R forming a common stem and M emerging separately from basal cell; MA trifid apically; position of fork Sc+R slightly basad or at the same level as fork CuA1+CuA2; first crossvein MP-CuA1 at least as long as MP from M fork to this crossvein, crossvein MP-CuA1 almost at same level as crossvein r-m, subapical cell MP with upper margin (vein MP) fine concave, no crossvein between CuA1 and CuA2. Apical cells 10. Hind tibia lacking lateral spines.
Male genitalia. Pygofer symmetrical and prolonged with symmetrical lateral lobes in lateral view. Medioventral process thumb-like in lateral view. Anal segment tubular, short and stout. Genital styles relative small and symmetrical. Aedeagus slender and flagellum of aedeagus with spinose processes.
Female genitalia. Ovipositor elongate, orthopteroid and slightly curved upwards; anal segment square or rectangular in dorsal view; 9th tergite without wax plate. Gonapophysis VIII slightly sclerotised, blade-like posteriorly. Gonapophysis IX single, blunt and strongly sclerotised, between middle tooth and apex with a row of denticles. Gonoplac slightly sclerotised, with many spinules on ventral edge in inner lateral view. Posterior vagina with sclerites.
This genus may be easily distinguished from other genera of Eucarpiini by the following features: frontoclypeal suture generally angled or semicircular; rostrum distinctly surpassing hind coxae; forewing with ten apical cells, Sc+R forking slightly basad or at same level as fork CuA1+CuA2, first crossvein MP-CuA1 as long as or longer than vein MP from M fork to this veinlet, subapical cell MP with upper margin (vein MP) fine concave, no transverse vein between CuA1 and CuA2, position of first crossvein MP-CuA1 almost at same level as first crossvein r-m (
China, Japan, Australia.
N. acutata Zhi & Chen, sp. n.; China (Yunnan).
N. bidentata Zhang & Chen, 2013; China (Guizhou).
N. hamata Zhang & Chen, 2013; China (Guizhou, Hubei).
N. maai Tsaur & Hsu, 2003; China (Taiwan).
N. okinawana Emeljanov & Hayashi, 2007; Japan (Ryukyus).
N. reversa Zhi & Chen, sp. n.; China (Yunnan).
N. rhizophorae Löcker, 2010; Australia (Queensland).
1 | Ventral margin of periandrium without spinose process | 2 |
– | Ventral margin of periandrium with one or two spinose process(es) | 3 |
2 | Dorsal margin of periandrium with one process; flagellum with two processes near apex and without process at base ( |
N. okinawana |
– | Dorsal margin of periandrium without process; flagellum with one process near apex and a long process near base (Figs |
N. reversa sp. n. |
3 | Ventral margin of periandrium with one small triangular process at basal 1/3 | 4 |
– | Ventral margin of periandrium without triangular process at base, while with one or two process(es) near or at apex | 5 |
4 | Left side of periandrium with a process near apex, dorsal margin with a shovel-shaped process, right side without process in the middle, base of process near apex of flagellum with two denticulations ( |
N. bidentata |
– | Left side of periandrium without process, dorsal margin without process, right side with a short acute process in the middle, base of process near apex of flagellum without denticulation (Figs |
N. acutata sp. n. |
5 | Flagellum with a prominent long process in the middle ( |
N. rhizophorae |
– | Flagellum without process in the middle | 6 |
6 | Dorsal margin of periandrium with a hook-shaped process, ventral margin of periandrium with one process, flagellum with smooth apical margin ( |
N. hamata |
– | Dorsal margin of periandrium without process, ventral margin of periandrium with two processes, flagellum with sinuate apical margin ( |
N. maai |
1 | Posterior vagina without long longitudinal sclerite (Figs |
N. hamata |
– | Posterior vagina with a long longitudinal sclerite | 2 |
2 | Long longitudinal sclerite on right side ventrally (Figs |
N. reversa sp. n. |
– | Long longitudinal sclerite on left side ventrally | 3 |
3 | Posterior vagina elongate, left side with two longitudinal sclerites; each side with a small sclerite near terminal in ventral view (Figs |
N. acutata sp. n. |
– | Posterior vagina relatively short, left side with one longitudinal sclerite; posterior vagina with a wide sclerite medially and a small longitudinal sclerite on the left side near terminal in ventral view (Figs |
N. bidentata |
Holotype: ♂, China: Yunnan, Jinping County, Fenshuiling (22°86'N, 103°22'E), 8 June 2013, Liang-Jing Yang; paratypes: 1♂, 3♀♀, same data as holotype, Liang-Jing Yang and Ying-Jian Wang; 1♀, China: Yunnan, Pingbian County, Daweishan (22°81'N, 103°79'E), 5 June 2013, Liang-Jing Yang.
Body length: male 4.8–5.0 mm (N = 2), female 5.1–5.3 mm (N = 4); forewing length: male 4.5–4.8 mm (N = 2), female 4.8–5.0 mm (N = 4).
Coloration. General color brown (Figs
Head and thorax. Vertex (Figs
Male genitalia. Pygofer (Figs
Neocarpia acutata sp. n., male 5 Head and thorax, dorsal view 6 Face, ventral view 7 Forewing 8 Genitalia, lateral view 9 Pygofer and genital styles, ventral view 10 Anal segment, dorsal view 11 Genital styles, inner lateral view 12 Aedeagus, right side 13 Aedeagus, left side 14 Aedeagus, dorsal view 15 Aedeagus, ventral view. Scale bars: 0.5 mm (5–6, 8); 1.0 mm (7); 0.2 mm (9–15).
Female genitalia. Pygofer (Figs
Neocarpia acutata sp. n., female 16 Genitalia, lateral view 17 Genitalia, ventral view 18 Anal segment, dorsal view 19 Pygofer, caudal view 20 Gonapophysis VIII and gonocoxa VIII, dorsal view 21 Gonapophysis IX, lateral view 22 Gonoplac, inner lateral view 23 Posterior vagina, ventral view 24 Posterior vagina, dorsal view. Scale bars: 0.5 mm (16–17); 0.2 mm (18–24).
China (Yunnan).
The specific name is derived from the Latin word “acutata”, referring to the right side of periandrium bearing an acute process in the middle near dorsal margin.
Male genitalia of N. acutata sp. n. is similar to N. bidentata Zhang & Chen, 2013, but differs in: (1) right side of periandrium near dorsal margin with a short acute process in the middle curved and directed dorsocephally (in N. bidentata, right side without process in the same position); (2) right side of periandrium with a long and broad process strongly curved near apex directed ventrocephally (process on right side of periandrium near apex straight and directed dorsocephally in N. bidentata); (3) left side of flagellum with a process basally (in N. bidentata, without process in the same position).
Female genitalia of N. acutata sp. n. is similar to N. bidentata Zhang & Chen, 2013, but differs in: (1) posterior vagina elongate, left side with two longitudinal sclerites (in N. bidentata, posterior vagina relatively short, left side with one longitudinal sclerite); (2) each side of posterior vagina with a small sclerite near terminal in ventral view (in N. bidentata, posterior vagina with a wide sclerite medially and a small longitudinal sclerite on the left side near terminal in ventral view).
Neocarpia bidentata Zhang & Chen, 2013: 43: figs 1–13; 47: 27–29.
1♂, China: Guizhou, Xishui County, Linjiang, 1 June 2006, Xiang-Sheng Chen (Holotype); 3♀♀, same data as holotype (Paratypes); 1♂, China: Guizhou, Wangmo County, Dayi, 24 September 1997, Xiang-Sheng Chen (Paratype).
Female genitalia. Pygofer (Figs
Neocarpia bidentata Zhang & Chen, 2013, female 25 Genitalia, lateral view 26 Genitalia, ventral view 27 Anal segment, dorsal view 28 Pygofer, caudal view 29 Gonapophysis VIII and gonocoxa VIII, dorsal view 30 Gonapophysis IX, lateral view 31 Gonoplac, inner lateral view 32 Posterior vagina, ventral view 33 Posterior vagina, dorsal view. Scale bars: 0.5 mm (25–26); 0.2 mm (27–33).
China (Guizhou).
Diagnosis of female see Neocarpia acutata Zhi & Chen, sp. n.
The female genitalia of this species is described and illustrated for the first time.
Neocarpia hamata Zhang & Chen, 2013: 45: figs 14–26; 47: 30–32.
1♂, China: Guizhou, Yanhe County, Daheba, 5–12 June 2007, Pei Zhang (Holotype); 1♀, same data as holotype (Paratype); 3♀♀, China: Guizhou, Yanhe County, Lijiaba, 5–12 June 2007, Pei Zhang (Paratypes); 19♂♂, 16♀♀, China: Hubei, Luotian County, Qingtaiguan, (31°16'N, 115°69'E), 29 June–3 July 2014, Zhi-Min Chang, Zheng-Xiang Zhou and Mei-Na Guo.
Female genitalia. Pygofer (Figs
Neocarpia hamata Zhang & Chen, 2013, female 34 Genitalia, lateral view 35 Genitalia, ventral view 36 Anal segment, dorsal view 37 Pygofer, caudal view 38 Gonapophysis VIII and gonocoxa VIII, dorsal view 39 Gonapophysis IX, lateral view 40 Gonoplac, inner lateral view 41 Posterior vagina, ventral view 42 Posterior vagina, dorsal view. Scale bars: 0.5 mm (34–35); 0.2 mm (36–42).
China (Guizhou, Hubei).
Female of N. hamata is similar to N. acutata sp. n., but differs in: (1) posterior vagina without sclerite near base (posterior vagina with two longitudinal sclerites near base in N. acutata); (2) anal tube shorter than wide in dorsal view (in N. acutata, anal tube longer than wide in dorsal view).
The female genitalia of this species is described and illustrated for the first time.
Neocarpia maai Tsaur & Hsu, 2003: 441: fig. 6A–H.
China (Taiwan).
Remarks. Based on the description and the figures by
Neocarpia okinawana Emeljanov & Hayashi, 2007: 128: figs 4–5; 135: figs 21–24.
Japan (Ryukyus).
Based on the description and the figures by
Holotype: ♂, China: Yunnan, Xichou County, Fadou (23°38'N, 104°78'E), 28 June 2013, Ying-Jian Wang; paratypes: 11♂♂, 29♀♀, same data as holotype, Ying-Jian Wang and Qiang Luo.
Body length: male 5.8–6.3 mm (N = 7), female 6.3–6.6 mm (N = 20); forewing length: male 5.0–5.3 mm (N = 7), female 5.1–5.8 mm (N = 20).
Coloration. General color yellowish brown (Figs
Head and thorax. Vertex (Figs
Neocarpia reversa sp. n., male 47 Head and thorax, dorsal view 48 Face, ventral view 49 Forewing 50 Genitalia, lateral view 51 Pygofer and genital styles, ventral view 52 Anal segment, dorsal view 53 Genital styles, inner lateral view 54 Aedeagus, right side 55 Aedeagus, left side 56 Aedeagus, dorsal view 57 Aedeagus, ventral view. Scale bars: 0.5 mm (47–48, 50); 1.0 mm (49); 0.2 mm (51–57).
Male genitalia. Pygofer (Figs
Female genitalia. Pygofer (Figs
Neocarpia reversa sp. n., female 58 Genitalia, lateral view 59 Genitalia, ventral view 60 Anal segment, dorsal view 61 Pygofer, caudal view 62 Gonapophysis VIII and gonocoxa VIII, dorsal view 63 Gonapophysis IX, lateral view 64 Gonoplac, inner lateral view 65 Posterior vagina, ventral view 66 Posterior vagina, dorsal view. Scale bars: 0.5 mm (58–59); 0.2 mm (60–66).
China (Yunnan).
The specific name is derived from the Latin word “reversa”, referring to the left side of the periandrium with a short reversed process basally.
Male genitalia of N. reversa sp. n. is similar to N. maai Tsaur & Hsu, 2003, but differs in: (1) left side of periandrium with a short reversed process basally (N. maai without process in same position); (2) two processes on both lateral sides of periandrium near apex (three processes on periandrium near apex, two on ventral margin and one on right side in N. maai); (3) flagellum with smooth apical margin (sinuate in N. maai).
Female genitalia of N. reversa is similar to N. bidentata Zhang & Chen, 2013, but differs in: posterior vagina with a long longitudinal sclerite on left side (posterior vagina with a long longitudinal sclerite on right side in N. bidentata).
Neocarpia rhizophorae Löcker, in Löcker, Fletcher & Gurr, 2010: 18: fig. 7A–D; 28: fig. 17A–E.
Australia (Queensland).
Based on the description and the figures by
The taxonomic characters of cixiid male genitalia have been sufficiently studied, whereas the descriptions of cixiid female genitalia are quite rare. Although some characters of the female external genitalia like ovipositor, anal segment, anal style and wax plate have been described by several researchers in history, such as: Cixius Latreille (
Tsaur and Hsu described and illustrated the female pygofer and the anal segment of Neocarpia maai (
The authors are grateful to collectors for collecting specimens. We also wish to thank Prof. Mike Wilson (National Museum Wales, Cardiff, United Kingdom) for his very kind editorial help with this paper and two anonymous referees for their efforts in improving this paper. This work was supported by the National Natural Science Foundation of China (No. 31472033), the Program of Excellent Innovation Talents, Guizhou Province (No. 20154021) and the Program of Science and Technology Innovation Talents Team, Guizhou Province (No. 20144001).