Review Article |
Corresponding author: Weicheng Yang ( yangweicheng0908@sina.com ) Academic editor: Tony Robillard
© 2020 Xulin Zhou, Weicheng Yang.
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:
Zhou X, Yang W (2020) A new species of Tachycines Adelung, 1902 (Orthoptera, Rhaphidophoridae, Aemodogryllinae, Aemodogryllini) from karst caves in Guizhou, China. ZooKeys 937: 21-29. https://doi.org/10.3897/zookeys.937.49173
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Tachycines (Gymnaeta) trapezialis sp. nov. (梯形裸灶螽) is described with specimens collected from Diaosiyan and Sanjiaoshan caves in Ziyun County, Guizhou, China. The unique trapezoidal shape of the epiphallus in males and the subgenital plate in females, which separate the new taxon from its congeners, are illustrated.
Orthoptera, Tachycines (Gymnaeta), Ziyun
During scientific expeditions to the proposed Ziyun Nature Reserve for Hume’s pheasant (Syrmaticus humiae) in Ziyun County, Guizhou, China, nymphs and adults of a new species were collected in Diaosiyan and Sanjiaoshan caves in Ziyun County, Guizhou, China, in June and October of 2019.
These specimens were found to belong to the subgenusGymnaeta Adelung, 1902 in the genus Tachycines Adelung, 1902 and Tachycines (Gymnaeta) trapezialis sp. nov. is described herein. Nine valid species of the subgenus have been recorded from Guizhou Province, i.e. Tachycines (Gymnaeta) ferecaecus (Gorochov, Rampini & Di Russo, 2006), Tachycines (Gymnaeta) proximus (Gorochov, Rampini & Di Russo, 2006), Tachycines (Gymnaeta) chenhui (Rampini & Di Russo, 2008), Tachycines (Gymnaeta) latellai (Rampini & Di Russo, 2008), Tachycines (Gymnaeta) zorzini (Rampini & Di Russo, 2008), Tachycines (Gymnaeta) solida (Gorochov, Rampini & Di Russo, 2006), Tachycines (Gymnaeta) borutzkyi (Gorochov, 1994), Tachycines (Gymnaeta) dispar (Qin, Liu & Li, 2019) and Tachycines (Gymnaeta) lalinus (Feng, Huang & Luo, 2019) (Gorochov, 1994;
All specimens used in this study were preserved in 75% ethanol. Details of the morphology were studied under an Olympus SZ61 stereomicroscope. Male genitalia were preserved in mixture solution of ethanol and glycerin. Photographs were taken by an Olympus DP22 digital camera and processed with Adobe Photoshop CS6.
All specimens are deposited in the Institute of Karst Caves, Guizhou Normal University, Guizhou Province, China (
This new species is very similar to T. (G.) lushuicus Qin, Liu & Li, 2019, T. (G.) parvus Qin, Liu & Li, 2019, and T. (G.) bifurcatus Gorochov, 2010, but differs from them in having the epiphallus of the male genitalia trapezoidal, without upper and lower deep notches and the hind tibia provided with 54–60 spines on each side for the new species. In T. (G.) lushuicus Qin, Liu & Li, 2019, the epiphallus of the male genitalia has an upper deep notch, and the hind tibia above has 61–67 spines on each side. In T. (G.) parvus Qin, Liu & Li, 2019, the epiphallus of the male genitalia has an upper and lower deep notch, and the female subgenital plate is triangular. In T. (G.) bifurcatus Gorochov, 2010, the epiphallus is strongly transverse, with a slightly notched upper part and medial projections on the lower part, and with a pair of large, almost oval lateral sclerites in males.
Holotype , 1♂, Diaosiyan Cave, Ziyun County, Guizhou, 25°35.06'N, 106°12.32'E, 1110–1120 m alt., October 2, 2019, collected by Xulin Zhou; paratypes, 1♀, same data as holotype.
Diaosiyan Cave, Ziyun County, Guizhou Province: nymphs 11♂♂ 10♀♀, June 10, 2019, collected by Xulin Zhou, Juan Liao and Yi Du; 13♂♂ 9♀♀, October 2, 2019, collected by Xulin Zhou, Haixia Luo, Panpan Ren, Meizhen Deng and Suqin Zhao. Sanjiaoshan Cave, Ziyun County, Guizhou Province: 2♀♀, 25°35.35'N, 106°12.31'E, 1109m alt., October 2, 2019, collected by Xulin Zhou, Haixia Luo, Panpan Ren, Meizhen Deng and Suqin Zhao.
Male. Body medium-sized (Fig.
Female. Other characters are similar to male (Fig.
The name refers to trapezoidal epiphallus in males.
Individuals of the new species live in groups in subtropical karst caves (Figs
Species distribution of the subgenus (Fig.
We are grateful to all collectors of the specimens cited in this paper. We thank to Shulin Yang, Xiaolan Wu, Tengjiang Zhou, and two reviewers for their help on the manuscript. We also thank Xianlin Zeng, Qingbei Weng and Qianquan Chen for help with access to the microscope. This research was supported by the National Natural Science Foundation of China (grant no. 30560024), Science-technology Foundation projects of Guizhou Province (黔科合LH字LKS[2016]7207号, 黔科合支撑 [2017]2811号, 黔科合重大专项字[2016]3022号, 黔科合J字[2011]2181号), Doctoral fund of Guizhou Normal University, and the fourth high-level innovative talents “thousand level” program of Guizhou Province of 2017.