Research Article |
Corresponding author: Bao-Zhen Hua ( huabzh@nwsuaf.edu.cn ) Academic editor: Ben Price
© 2020 Kai Gao, Meng-Di Li, Bao-Zhen Hua.
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:
Gao K, Li M-D, Hua B-Z (2020) Two new species of Cerapanorpa (Mecoptera, Panorpidae) from the Qinling and Minshan mountains. ZooKeys 971: 17-30. https://doi.org/10.3897/zookeys.971.55819
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Two new species of Cerapanorpa Gao, Ma & Hua, 2016 are described from the Qinling and Minshan mountains, respectively. Cerapanorpa qinlingensis sp. nov. can be readily distinguished from its congeners by the elongate hypovalves and the extremely developed basal process of gonostylus in male genitalia. Cerapanorpa minshana sp. nov. is characterized by its bifurcated parameres and a cluster of long black bristles on the inner apex of the gonocoxite. The number of species of Cerapanorpa is raised to 21. An updated key to species of Cerapanorpa is presented.
biodiversity, China, Panorpidae, scorpionfly, taxonomy
The single-horned scorpionfly Cerapanorpa Gao, Ma & Hua, 2016, an endemic genus of Panorpidae (Insecta, Mecoptera) in central China (
The eggs are oval and bear polygonal net-like ridges on the chorion surface (
Cerapanorpa currently consists of 19 species (
Recently, two undescribed species of Cerapanorpa were collected from the Qinling and Minshan mountains, a well-known biodiversity hotspot in the world (
Specimens were collected from the Qinling and Minshan mountains in central China (Fig.
Terminology follows
Holotype : ♂, China: Shaanxi Province, Taibaishan Nature Reserve (33°53'N, 107°48'E), 2100 m, 15 August 2016, leg. Ji-Shen Wang. Paratypes: 2♂5♀, same data as for holotype; 6♂10♀, Zhouzhi County, Qinlingliang (33°49'N, 107°45'E), 2050 m, 24 July 2019, leg. Kai Gao; 12♂18♀, Foping Nature Reserve (33°41'N, 107°52'E), 2200 m, 26 July 2019, leg. Kai Gao; 5♂4♀, Ningshan County, Pingheliang (33°28'N, 108°29'E), 2200 m, 5 July 2019, leg. Xin Tong and Peng-Yang Wang; 3♂, Yangxian County, Changqing Nature Reserve (33°42'N, 107°32'E), 2400 m, 18 July 2019, leg. Yu-Chen Zheng.
The specific epithet refers to the type locality, Qinling Mountains.
The new species resembles C. emarginata (Cheng, 1949) in appearance, but can be readily distinguished from the latter by the following characters: 1) wing markings greatly reduced with a faint pterostigmal band (cf. with conspicuous pterostigmal band and apical band); 2) hypovalve longer, reaching the apex of the gonocoxite (cf. shorter, not reaching apex of gonocoxite); 3) paramere shorter, reaching the middle of the gonostylus (cf. longer, reaching apex of gonostylus); 4) gonostylus with an extremely developed basal process (cf. poorly developed).
(Fig.
Adults of Cerapanorpa qinlingensis sp. nov. A male habitus, dorsal view B female habitus, dorsal view C male head, frontal view D male dorsum of head and thorax E Male abdomen, lateral view. Abbreviations: ah anal horn; ms mesonotum; mt metanotum; no notal organ; pno postnotal organ; pr pronotum. Scale bars: 5 mm (A, B); 0.5 mm (C–E).
Thorax
(Fig.
Abdomen
(Figs
Male genitalia
(Fig.
Genitalia of Cerapanorpa qinlingensis sp. nov. A, B genital bulb, ventral and dorsal views C gonostylus, dorsal view D, F aedeagus, ventral and lateral views E terminalia, ventral view G right paramere, ventral view H, I medigynium, ventral and dorsal views. Abbreviations: ax axis; bp basal process; ce cercus; dbp dorsal basal plate; dp dorsal process; dv dorsal valve; ep epandrium; gcx gonocoxite; gs gonostylus; hv hypovalve; lp lateral process; mp main plate; mt median tooth; pa posterior arm; pm paramere; sgp subgenital plate; vbp ventral basal plate; vv ventral valve. Scale bars: 0.5 mm (A, B, E); 0.2 mm (C, D, F–I).
Similar to the male in wing markings (Figs
Female genitalia
(Fig.
China (Qingling, Shaanxi Province).
In the type locality, Taibaishan Nature Reserve, all specimens were captured on the southern slope of the Taibai Mountain, with an elevation of 2100 m. The species mainly inhabits dense herbaceous and shrubby vegetation under evergreen broad-leaved forests (Fig.
Holotype : ♂, China: Sichuan Province, Jiuzhaigou County, Anle Town (33°22'N, 104°14'E), 2400 m, 16 June 2019, leg. Kai Gao and Zhi-Chao Jia. Paratypes: 27♂34♀, same data as for holotype; 1♂1♀, Jiuzhaigou County, Majia Town (33°08'N, 104°05'E), 2100 m, 28 May 2019, leg. Kai Gao and Zhi-Chao Jia; 1♀, Jiuzhaigou County, Zhangzha Town (33°16'N, 103°54'E), 2160 m, 19 July 2019, leg. Ning Li and Lu Liu; 18♂22♀, Gansu Province, Wenxian County, Gaoloushan (33°04'N, 104°42'E), 2200 m, 17 June 2019, leg. Kai Gao and Zhi-Chao Jia.
The specific epithet refers to the type locality, Minshan Mountains.
The new species can be readily distinguished from its congeners by the following combination of features: 1) paramere short and bifurcated, bearing a column of long golden spines along the dorsal side; 2) gonocoxite bearing a cluster of black long bristles on the inner apex; 3) dorsal valves of the aedeagus curved ventrally, with the distal part heel-shaped; 4) main plate of medigynium flat, intensely narrowed at the base and broadened distally.
(Fig.
Adults of Cerapanorpa minshana sp. nov. A male habitus, dorsal view B female habitus, dorsal view C male head, frontal view D male dorsum of head and thorax E male abdomen, lateral view. Abbreviations: ah anal horn; ms mesonotum; mt metanotum; no notal organ; pno postnotal organ; pr pronotum. Scale bars: 5 mm (A, B); 0.5 mm (C–E).
Thorax
(Fig.
Abdomen
(Fig.
Male genitalia
(Fig.
Genitalia of Cerapanorpa minshana sp. nov. A, B genital bulb, ventral and dorsal views C aedeagal complex, ventral view D terminalia, ventral view E left paramere, lateral view F Aedeagus, lateral view G, H medigynium, ventral and dorsal views. Abbreviations: ae aedeagus; ax axis; ce cercus; dbp dorsal basal plate; dp dorsal process; dv dorsal valve; ep epandrium; gcx gonocoxite; gs gonostylus; hv hypovalve; lp lateral process; mp main plate; pa posterior arm; pm paramere; sgp subgenital plate; vbp ventral basal plate; vv ventral valve. Scale bars: 0.5 mm (A, B); 0.2 mm (C–H).
Similar to males in coloration and patterns (Figs
Female genitalia. Subgenital plate long elliptical, ending with a V-shaped incision, bearing long setae on distal portion (Fig.
China (Minshan, Sichuan and Gansu provinces).
In the type locality, all specimens were captured on herbaceous groundcover in the Panjiagou Valley (Fig.
1 | T5 with an anal horn on posterior margin | C. bicornifera (Chou & Wang, 1981) |
– | T5 without anal horns on posterior margin | 2 |
2 | Finger-like anal horn on T6 shorter and stout, at most 0.2 times as long as T6 | C. brevicornis (Hua & Li, 2007) |
– | Finger-like anal horn on T6 longer, at least 0.3 times as long as T6 | 3 |
3 | Paramere with thin stalk, then abruptly swollen into broad plate from middle portion | 4 |
– | Paramere slightly broader than stalk, with apical portion lanceolate or slightly curved | 7 |
4 | Paramere bifurcated, with subapical branch | 5 |
– | Paramere unbifurcated, without subapical branch | 6 |
5 | Paramere shorter, only reaching the base of dorsal valves, quadrate plate above the stalk, with an L-shaped subapical branch | C. byersi (Hua & Li, 2007) |
– | Paramere longer, reaching apex of dorsal valves, and bearing a column of long golden spines along dorsal side | C. minshana sp. nov. |
6 | Paramere exceeding apex of gonocoxite, curved medially at apex; dorsal valve not tapering toward apex | C. baimaensis Gao & Hua, 2019 |
– | Paramere not exceeding apex of gonocoxite, lanceolate at apex; dorsal valve tapering toward apex | C. centralis (Tjeder, 1936) |
7 | Paramere linear, slightly thicker than stalk, bearing a column of extremely short spines | 8 |
– | Paramere flat and broad above stalk, prominently broader than its stalk | 10 |
8 | Wings with remarkable complete dark-brown markings; middle and hind legs with coxae and trochanters brownish black; paramere curved almost at a right angle basally | C. reni (Chou & Wang, 1981) |
– | Wing membrane hyaline, only with faint apical band or without markings; legs with coxae and trochanters yellowish; paramere slightly curved apically | 9 |
9 | Paramere yellowish brown, blunt apically, reaching middle of gonostylus and bearing spines along inner margin | C. dubia (Chou & Wang, 1981) |
– | Paramere dark-brown, reaching apex of gonocoxite and bearing a thorn at apex and spines on dorsal side | C. liupanshana Gao, Ma & Hua, 2016 |
10 | Paramere sinuate or geniculate | 11 |
– | Paramere straight and lanceolate, or slightly curved medially | 16 |
11 | Paramere strongly curved and sinuate in distal half, bearing long comb-like spines along inner margin | 12 |
– | Paramere slightly sinuate or geniculate at distal half | 13 |
12 | Paramere nearly bow-shaped; dorsal valves of aedeagus with truncate apex and membranous apical process | C. sinuata Gao, Ma & Hua, 2016 |
– | Paramere hook-shaped; dorsal valves of aedeagus tapering toward apex and with large L-shaped apical process | C. taizishana Gao & Hua, 2019 |
13 | Paramere columnar and somewhat sinuate dorsally at apical portion; hypovalves of hypandrium slender and dramatically elongate, exceeding apex of gonocoxite | C. yanggashana Gao & Hua, 2019 |
– | Paramere geniculate at apical portion; hypovalves of hypandrium exceeding middle of gonocoxite | 14 |
14 | Rostrum blackish brown to black; paramere with short ventral spines at apex | C. nanwutaina (Chou & Wang, 1981) |
– | Rostrum yellowish to reddish brown; paramere with comb-like spines along medial margin | 15 |
15 | Hypovalves slender, with sparse stout bristles along inner margins; dorsal valves of aedeagus brawny, slightly expanded apically | C. xuebaodinga Gao & Hua, 2019 |
– | Hypovalves broad, with dense long bristles along inner margins; dorsal valves of aedeagus elongated and slender apically | C. obtusa (Cheng, 1949) |
16 | Paramere extending to middle of gonostylus | 17 |
– | Paramere extending nearly to apex of gonostylus or beyond | 18 |
17 | Wings only with faint pterostigma and apical bands; paramere with spines from its middle length | C. funiushana (Hua & Chou, 1997) |
– | Wings with prominent pterostigmal and apical bands; paramere with a row of short spines on inner margin above basal stalk | C. wangwushana (Huang, Hua & Shen, 2004) |
18 | Wings without markings; paramere extremely elongated, exceeding apex of gonostylus | C. protrudens Gao, Ma & Hua, 2016 |
– | Wings with markings; paramere not exceeding apex of gonostylus | 19 |
19 | Wings only with a faint pterostigmal band; hypovalve elongate, reaching apex of gonocoxite; gonostylus with extremely developed basal process | C. qinlingensis sp. nov. |
– | Wings with prominent pterostigmal band and apical band; hypovalve shorter, not reaching apex of gonocoxite; gonostylus with weakly-developed basal process | C. emarginata (Cheng, 1949) |
Cerapanorpa qinlingensis sp. nov. is endemic to the western Qinling Mountains, and closely related to C. emarginata (Cheng, 1949), which is patchily distributed in the eastern Qinling Mountains. The parapatric distribution pattern of these two species probably provides an ideal model to examine the mechanisms of species differentiation or speciation (an east-west genetic break) in the Qinling Mountains, as previously uncovered by phylogeographic studies (
The discovery of C. minshana sp. nov. increases the diversity of the genus Cerapanorpa to five species in the Minshan Mountains, including C. bonis (Cheng, 1949), C. baimaensis Gao & Hua, 2019, C. xuebaodinga Gao & Hua, 2019, C. yanggashana Gao & Hua, 2019, and C. minshana sp. nov. Cerapanorpa minshana sp. nov. differs greatly from the aforementioned four species by its bifurcated paramere, the shape of dorsal aedeagal valves and a cluster of black bristles on inner apex of gonocoxite. Only two species, C. minshana sp. nov. and C. centralis (Tjeder, 1936), possess a cluster of long black bristles on inner apex of gonocoxite in Cerapanorpa. However, C. minshana sp. nov. can be readily distinguished from C. centralis by its specific bifurcated paramere and the shape of dorsal aedeagal valves in males.
Cerapanorpa qinlingensis sp. nov. and C. minshana sp. nov. are only found in the high-altitude microhabitats of the Qinling and Minshan mountains, respectively (Figs
We thank Ji-Shen Wang for critical comments on the early draft of the manuscript. We also thank Ji-Shen Wang, Ning Li, Lu Liu, Xin Tong, Peng-Yang Wang, Zhi-Chao Jia (Shenyang Agricultural University, Shenyang) and Yu-Chen Zheng (China Agricultural University, Beijing) for collecting specimens. This research was supported by the National Natural Science Foundation of China (Grant Nos. 31672341 and 31172125).