A New Species of Spider Genus Khorata Huber , 2005 from China ( Araneae : Pholcidae )

T genus Khorata Huber, 2005 is endemic to Asia and distributed in southern China, Vietnam, Thailand and Laos (World Spider Catalog, 2020). A total of 48 species have been reported worldwide and most were collected at cave entrances from Karst regions (Huber, 2005; Zhang and Zhang, 2008; Chen et al., 2009; Zhang and Zhu, 2009; Yao and Li, 2010, 2013; Wei and Xu, 2014; Yao et al., 2014, 2015, 2019; Nie et al., 2018; Xu et al., 2020). A total of 33 Khorata species have been described from China. More specifically, they are distributed in Guangxi Zhuang Autonomous Region (called Guangxi for short in the text), Yunnan, Guizhou, Guangdong, Hunan, Fujian and Hainan Provinces, China. In Fujian, Hunan, and Hainan Provinces, only one Khorata species was found in each province. Comparatively higher Khorata species diversity is reported from Guangxi, Yunnan and Guizhou Provinces. The species diversity of Khorata is especially high in Guangxi, where 20 species have been reported (World Spider Catalog, 2020; Yao et al., 2019). It seems that most Khorata species have a preference for the limestone caves or other environment related with stone (including karst or non-karst). It is really a fact that Guangxi has very rich typical karst landform. Therefore, it also seems natural that there is a high species diversity of Khorata in Guangxi. This genus can be distinguished from other genera of the family Pholcidae C.L. Koch, 1850 by the combination of: 1) the sclerotized ledges on the anterolateral surface of

Guangdong Province is just the east of Guangxi and two Khorata species were previously reported from there: K. yangchun Li, 2019 andK. nani Xu et al., 2020. In the present paper, the third Khorata species from Guangdong is described: Khorata danxia sp. nov. This new species was collected from Danxia Mountain (also named Danxiashan National Nature Reserve) which is famous for its Danxia landform. Danxia cliffs, sandstone walls, stone steles, aiguilles and hills are often seen in Danxia Landform. It is in the concavity of a sandstone wall where this new specie was found and collected. Though we have reason to believe that Khorata species diversity in Guangdong will not be as rich as in Guangxi, we also believe that more Khorata species will be found in Guangdong by future collection and further research.

Material and methods
Specimens were examined under an Olympus SZX16 stereomicroscope and an Olympus BX53 compound microscope. Photographs were taken with a Canon Power Shot G12 digital camera mounted on an Olympus BX53 compound microscope, and final multifocus images were produced using Helicon Focus 6.0. Both the male palps and female genitalia were examined and photographed after being dissected from the spider's body.

O n l i n e F i r s t A r t i c l e
All morphological measurements are calculated using a stereomicroscope (LEICA M205C) and given in millimeters (mm). Eye diameters are taken at the widest point. Leg measurements are gotten from the dorsal side and given as total length (femur + patella + tibia + metatarsus + tarsus). All specimens examined in this study are deposited in the College of Life Sciences, Hunan Normal University (HNU).
The terminology used in text and figure legends follows Huber (2005) and Yao et al. (2019).

Diagnosis
The male of this new species is similar to that of Khorata shao Yao and Li, 2010 in having similar male chelicerae (Fig. 2C, D; Yao and Li, 2010) but can be distinguished by the different distal elements of procursus and the degrees of their sclerotization (distal part of procursus with three strongly sclerotized branches in this new species, while only slightly sclerotized in K. shao) (Fig. 1C, D;Yao and Li, 2010). The female of this new species can be distinguished from all known Khorata species by the shape, relative size and position of pore plates of epigynum (oval; the widest diameter about 1/5-1/6 of the width of vulva; each pore plate at an angle of 30-45 degrees to the horizontal line and two lines extended from the inner-lateral margins of pore plates forming a right angle (Fig. 2B).
Female (Paratype): Similar to male in general characteristics. Habitus as in Fig. 2G. Total length 2.53, prosoma 0.69 long, 0.82 wide-opisthosoma 1.42 long, 1.33 wide. Eyes: PME-PME 0.10, diameter PME 0.07, PME-ALE 0.05. EPIGYNUM. brown, decorated with many black and yellow dots, with lip-shaped protruding posterior margin ( Fig. 2A). Vulva anterior margin slightly wavy and forming two arches. Pair of pore plates yellow, oval, the widest diameter about 1/5-1/6 of the width of vulva; each pore plate at an angle of 30-45 degrees to the horizontal line and two lines extended from the inner-lateral margins of pore plates forming a right angle.
Distribution: Known only the type locality, China (Guangdong).