Research Article |
Corresponding author: Lianxi Xing ( lxxing@nwu.edu.cn ) Academic editor: Susanne Randolf
© 2023 Yuan Hua, Kai Gao, Lianxi Xing.
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:
Hua Y, Gao K, Xing L (2023) Taxonomic review of the genus Sinopanorpa Cai & Hua, 2008 (Mecoptera, Panorpidae) with descriptions of two new species. Deutsche Entomologische Zeitschrift 70(2): 283-290. https://doi.org/10.3897/dez.70.104621
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The scorpionfly genus Sinopanorpa Cai & Hua, 2008 is endemic to the mountain regions of central China, currently consisting of four species: Sinopanorpa tincta (Navás, 1931), S. digitiformis Huang & Hua, 2008, S. nangongshana Cai & Hua, 2008, and S. baokangensis Wang, 2021. Here, the genus is taxonomically reviewed, with descriptions of two new species: Sinopanorpa minshanicola sp. nov. from the Minshan Mountains and Sinopanorpa shennongjiaica sp. nov. from the Shennongjia Mountains, increasing the species number of the genus to six. An updated key to species of Sinopanorpa is provided.
biodiversity, China, Oriental Region, scorpionfly, Sinopanorpa, taxonomy
The scorpionfly genus Sinopanorpa Cai & Hua, 2008 was erected with Panorpa tincta Navás, 1931 as its type species (
Since the establishment of Sinopanorpa, the biology and morphology of S. tincta have been studied in many aspects. It completes one generation per year, with the adults emerging from late June to mid-September (
The ommatidia of adult compound eyes in S. tincta are of the typical apposition type, each retinula consisting of eight retinula cells (
In this paper, we taxonomically reviewed the genus Sinopanorpa in the mountain regions of central China, and described two new species, raising the species number of the genus to six. An updated key to species of Sinopanorpa is provided.
All the materials examined in this study are deposited in the Entomological Museum, Northwest A&F University, Yangling, Shaanxi, China (NWAU). Specimens were collected with collecting nets from the mountain regions in central China. Some type specimens were spread and pinned, and others were preserved in 75% or 95% ethanol. Specimens were dissected under a Nikon SMZ 1500 stereoscopic zoom microscope. The genitalia were macerated in cold 10% NaOH for 3–5 min and rinsed with distilled water. Habitus and ecological photographs were taken with a Nikon D7100 digital camera. Character images were taken using the scientific digital micrography system ZEISS SteREO Discovery.V20 equipped with the auto-montage imaging system AxioCam IC. All photographs were assembled with Adobe Photoshop CC 2015. A distribution map was generated by ArcGIS v.10.2 (ESRI, Redlands, USA) and was annotated in Adobe Illustrator CC. The localities in the map came from the collection labels of observed specimens and literature (
Sinopanorpa
Cai & Hua in
Panorpa tincta Navás, 1931, by original designation.
The genus Sinopanorpa can be readily distinguished from other genera of Panorpidae by the following characters: wing membrane deeply yellowish-brown with sooty brown markings; vein R2 generally 3-branched; notal organ on the posterior margin of male tergum III less-developed; tergum VI of male without anal horns; abdominal segment VII much thinner, stalk-like for basal 1/3, but distinctly thicker for distal 2/3; gonostylus in male genitalia greatly elongated with well-developed pointed basal lobe; ventral parameres simple, with spines on inner side, extending over apex of gonocoxite; A6 bearing a bundle of dense hairs on the centre of T6 in males; and female medigynium with extremely elongated thin axis.
China (Chongqing, Gansu, Hubei, Shaanxi, and Sichuan provinces) (Fig.
Species distribution map of the genus Sinopanorpa Cai & Hua, 2008. BK, Baokang (Hubei); BLG, Baligou (Hubei); DHB, Daheba Forest Park (Gansu); DJH, Dajiuhu (Hubei); FHS, Fenghuangshan (Shaanxi); FP, Foping (Shaanxi); HAB, Huang’anba (Chongqing); HC, Hengchong Nature Reserve (Hubei); HDT, Huoditang (Shaanxi); HLS, Hualongshan (Shaanxi); HX, Huixian (Gansu); HZZ, Houzhenzi (Shaanxi); JHP, Jiuhuping (Hubei); JLJ, Jialing River (Shaanxi); LHG, Laohegou (Sichuan); LJP, Liujiaping (Gansu); LP, Liping (Shaanxi); MCS, Micangshan (Sichuan); NGS, Nangongshan (Shaanxi); TB, Taibai (Shaanxi); TTH, Tongtianhe Forest Park (Shaanxi); TY, Tianyan (Hubei); XLS, Xiaolongshan (Gansu); ZBS, Zibaishan (Shaanxi); ZQ, Zhuque Forest Park (Shaanxi).
Panorpa tincta
Navás, 1931: 75;
Panorpa statura
Cheng, 1949: 148;
Sinopanorpa tincta,
This species differs from its congeners by the following characters: 1) gonostylus of male with median tooth blunt, and prominent basal lobe crescent spatula in shape; 2) ventral parameres shortened, only extending over apex of gonocoxite, with long comb-like spines along mesal margin on distal half; and 3) female medigynium narrow, with main plate nearly rectangular for basal 2/3, axis extending over 1/3 of its length beyond main plate.
China (Gansu and Shaanxi provinces) (Fig.
Sinopanorpa digitiformis
Huang & Hua in
This species can be differentiated from its congeners by the following characters: 1) abdominal segment VI of male markedly tapering towards apex in distal half; 2) basal lobe of gonostylus well-developed, with two acute distal hooks; 3) ventral parameres elongate, extending distinctly over basal lobe of gonostylus; and 4) main plate in female medigynium much shorter, only slightly longer than wide, with axis extending over half its length beyond main plate.
China (Chongqing, Hubei, and Shaanxi provinces) (Fig.
Sinopanorpa nangongshana
Cai & Hua in
This species can be readily differentiated from its congeners by the following characters: 1) posterior abdomen and male genitalia dark blackish brown; 2) ventral parameres greatly elongated, extending distinctly over median tooth of gonostylus; 3) basal lobe of gonostylus much narrower, with two short acute teeth at apex; and 4) main plate in female medigynium elongate, with thick axis extending half its length beyond main plate.
China (Shaanxi Province) (Fig.
Sinopanorpa baokangensis Wang, 2021: 1. Type locality: Baokang, Hubei.
This species can be distinguished from its congeners by the following characters: 1) male gonostylus with greatly developed simple acute basal lobe, extending beyond median tooth; 2) male ventral parameres moderately elongate, extending over base of basal lobe; and 3) female medigynium with main plate slightly longer than wide, with axis slender, two times as long as main plate.
China (Hubei Province) (Fig.
Holotype ♂ (NWAU), China, Sichuan Province, Pingwu County, Laohegou (32°29'17"N, 104°43'17"E, 1800 m), 20 July 2017, leg. Yuan Hua & Kai Gao. Paratypes: 3♂ 2♀ (NWAU), China, Sichuan Province, Pingwu County, Laohegou (32°29'17"N, 104°43'17"E, 1800 m), 14 July 2022, leg. Yuan Hua; 2♂ 2♀ (NWAU), China, Sichuan Province, Pingwu County, Laohegou (32°29'17"N, 104°43'17"E, 1650–1900 m), 6 July 2021, leg. Yuan Hua; 3♂ 5♀ (NWAU), China, Gansu Province, Wenxian County, Liujiaping (32°48'30"N, 104°46'43"E, 2080 m), 25 June 2019, leg. Kai Gao & Zhi-Chao Jia.
The new species can be readily recognized from its congeners by the following characters: 1) vertex with a dark transverse band across ocellar triangle; 2) ventral parameres of male shortened, only extending slightly over basal lobe of gonostylus; 3) basal process of gonostylus short, simple, acute, but non-furcated; and 4) female medigynium elongate, with axis half its length out of main plate.
The specific epithet is derived from the type locality, Minshan, and the Latin -cola (dwell).
Male (Fig.
Pronotum dark brown, with short black setae along anterior margin (Fig.
Forewing length 15.96–16.70 mm, width 3.84–3.92 mm. Forewing membrane light yellow, with markings pale brown; pterostigma prominent, orange yellow; apical band broad, covering whole apical part; pterostigmal band complete, with basal and distal branches equal in width; marginal spot elongate-rectangular, extending from costa to R4+5; basal band almost complete, across whole wing; basal spot absent; R2 three-branched; R3 arising from middle of pterostigmal band (Fig.
Abdominal segments I–IV (A1–A4) black in terga, pale yellow in sterna, and pale in pleura with spiracles clearly visible. Notal organ on posterior margin of tergum III (T3) less-developed, with postnatal organ on tergum IV very small near anterior margin. A5 pale yellow. A6 reddish yellow, greatly elongated, two times as long as A5, without anal horns. A patch of golden hairs along mid T6. A7 much thinner in basal 1/3 than in distal 2/3, with a cluster of hairs on anterio-dorsal corner of distal part (Fig.
Genital bulb long elliptic (Fig.
Sinopanorpa minshanicola sp. nov. A. Male genitalia, ventral view; B. Male genitalia, with hypovalves removed, ventral view; C. Male genitalia, dorsal view; D. Female terminalia, ventral view; E. Male gonostylus, dorsal view; F, G. Female medigynium, ventral and dorsal views. Scale bars: 0.5 mm. ax, axis. bp, basal process. ce, cercus. ep, epandrium. gcx, gonocoxite. gs, gonostylus. hv, hypovalve. mp, main plate. pa, posterior arm. pm, paramere. sgp, subgenital plate.
Female (Fig.
Subgenital plate broad at base, gradually narrowing towards apex, with bluntly rounded apex, apical part bearing long setae (Fig.
China (The Minshan Mountains in Gansu and Sichuan provinces).
Numerous adults of the new species were collected from late June to the end of July at the edges of coniferous and broad-leaf mixed forests, with dense sub-shrubs in the Minshan Mountains. At the type locality, adults are often found in moist microhabitats, especially rich on the alpine shrub or understory in broad-leaved forests with an altitude ranging from 1600 to 2100 m above sea level (Fig.
Holotype ♂ (NWAU), China, Hubei Province, Shennongjia Nature Reserve, Tianyan (31°42'58"N, 110°21'35"E; 1800 m), 1 July 2018, leg. Kai Gao & Yu-Ru Yang. Paratypes: 1♂ 2♀ (NWAU), China, same data as for the holotype; 2♀ (NWAU), China, Hubei Province, Shennongjia, Dalongtan (31°29'39"N, 110°18'10"E; 2200 m), 3 July 2018, leg. Kai Gao & Yu-Ru Yang; 8♂ 6♀ (NWAU), China, Hubei Province, Shennongjia, Jiuhuping (31°30'32"N, 110°20'57"E; 1850 m), 3 July 2018, leg. Kai Gao & Yu-Ru Yang; 2♀ (NWAU), China, Hubei Province, Shennongjia, Jiuhuping (31°30'32"N, 110°20'57"E; 2200 m), 4 July 2018, leg. Kai Gao & Yu-Ru Yang; 6♂ 6♀ (NWAU), China, Hubei Province, Shennongjia, Jiuhuping (31°30'32"N, 110°20'57"E, 1900 m), 18 July 2019, leg. Kai Gao.
The new species can be differentiated from its congeners by the following characters: 1) vertex with ocellar triangle black, but without transverse band; 2) male tergum VI and female terga VI–IV orange; 3) ventral parameres of male greatly elongated, extending distinctly over median tooth of gonostylus to apical forth; 4) gonostylus with basal lobe well-developed and split into two separate acute elongate hooks; and 5) female subgenital plate with X-shaped ridge over whole length, and medigynium with slender axis non-expanded anteriorly.
The specific epithet is derived from the type locality, Shennongjia, by using the adjective form of the locality name with the fuffix -ica.
Male (Fig.
Thorax blackish brown dorsally, pale yellow or yellowish brown laterally. Pronotum with 12 setae along anterior margin. Legs yellow, except joints from tibia to claws dark brown to black, claws serrate with six teeth.
Forewing length 15.32–16.34 mm, width 3.78–3.94 mm. Forewing membrane deeply yellow, with markings faint grayish brown; pterostigma prominent, orange. Apical band broad; pterostigmal band prominent, with complete basal and distal branches equal in width; marginal spot absent or elongate, extending from R1 to R2+3; basal band complete, broad; basal spot absent. R2 3-branched. Hindwings similar to forewings, but marginal spot and basal band absent (Fig.
Terga I–IV blackish brown, A5 yellowish brown; A6 orange reddish brown, A7–A9 yellowish brown. Sterna I–V pale yellow, pleura pale with dark longitudinal stripes. Notal organ on posterior margin of T3 less-developed. A6 subcylindrical, at least two times as long as A5, with a cluster of hairs on mid protuberance of tergum, without anal horns. A7 prominently thinner for basal 1/3, then suddenly swollen dorsad for distal 2/3, with a cluster of short hairs along anterodorsal corner of distal part (Fig.
Genital bulb rounded (Fig.
Sinopanorpa shennongjiaica sp. nov. A. Male genitalia, ventral view; B. Male genitalia, with hypovalves removed, ventral view; C. Male genitalia, dorsal view; D. Female terminalia, ventral view; E. Male gonostylus, dorsal view; F, G. Female medigynium, ventral and dorsal views. Scale bars: 0.5 mm. ax, axis. bp, basal process. ce, cercus. ep, epandrium. gcx, gonocoxite. gs, gonostylus. hv, hypovalve. mp, main plate. pa, posterior arm. pm, paramere. sgp, subgenital plate.
Female. Forewing length 16.64–17.12 mm, width 3.94–4.10 mm. Wings generally similar to those of male, but marginal spot present (Fig.
Subgenital plate narrow, with an X-shaped ridge (Fig.
China (Hubei Province).
This species is distributed in the Shennongjia Mountains. In the type locality, all specimens were captured on herbaceous groundcover, with elevations ranging from 1800 to 2200 m. Suitable microhabitats are moist and cool valleys during the imaginal flight period.
Updated from
1 | Male ventral parameres short, extending slightly over apex of gonocoxites at most | 2 |
– | Male ventral parameres elongate, extending distinctly beyond median tooth of gonostylus | 3 |
2 | Basal process of male gonostylus with distal tooth smaller than basal tooth; paramere with long comb-like spines on inner margin; female medigynium with axis greatly divergent at base | S. tincta |
– | Male gonostylus with basal process simple, not furcated distally; female medigynium elongate, with axis half its length out of main plate | S. minshanicola sp. nov. |
3 | Male gonostylus with basal process bifurcated basally | 4 |
– | Male gonostylus with basal process simple, not bifurcated basally | 5 |
4 | Basal process of male gonostylus with two teeth almost equal in size; female medigynium with axis slightly divergent; female medigynium with apodemes of axis divergent apically | S. digitiformis |
– | Basal process of male gonostylus separate completely as two lobes from base; median tooth of gonostylus acute; female subgenital plate with X-shaped ridge over whole length, and medigynium with slender axis not expanded anteriorly | S. shennongjiaica sp. nov. |
5 | Basal process of male gonostylus well-developed, pointed, median tooth indistinct; female medigynium with stout posterior arms longer than half length of main plate | S. baokangensis |
– | Male gonostylus with basal process only slightly developed, bifurcated distally; female medigynium with posterior portion wider than half width of main plate | S. nangongshana |
Species of the genus Sinopanorpa are found in high elevation habitats ranging from 1600 to 2200 m above sea level in the Qingling, Minshan, Bashan, and Shennongjia mountains. Numerous adults were often found in the summer on the alpine shrub or understory at the edges of coniferous and broad-leaf mixed forests, with dense sub-shrubs. Their microhabitats are usually situated in considerably cool and moist valleys in the mountain top regions with high elevation and high precipitation. Therefore, we assume that they are typical cool-adapted insects. The cool-adapted preference of Sinopanorpa species is similar to that of Cerapanorpa, which has been reported as a cold-adapted genus of Panorpidae (
The discovery of Sinopanorpa minshanicola sp. nov. and S. shennongjiaica sp. nov. increases the species number of the genus to six. The six species are disproportionately distributed in central China’s mountain regions, including the Qinling, Minshan, Bashan, and Shennongjia mountains (Fig.
We are grateful to Yu-Ru Yang and Zhi-Chao Jia for collecting some specimens. We also thank two anonymous reviewers for valuable comments on the revision of the manuscript, and Prof. Bao-Zhen Hua (Northwest A&F University) for revising the English. This research was funded by the National Natural Science Foundation of China (Grant number 32100347) and the China Postdoctoral Science Foundation (Grant number 2020M683691XB).