Cave millipede diversity with the description of six new species from Guangxi, China Author Liu, Weixin Author Wynne, J. Judson text Subterranean Biology 2019 30 57 94 http://dx.doi.org/10.3897/subtbiol.30.35559 journal article http://dx.doi.org/10.3897/subtbiol.30.35559 1314-2615-30-57 19205CA6468045D4A3A0F1640752D41B Pacidesmus trifidus Golovatch & Geoffroy, 2014 Fig. 4B Material examined. 6 males, 3 females (SCAU), China, Guangxi Zhuang Autonomous Region, Yangshuo County, Guanshan No. 4 Cave [ 24°56'58.34"N , 110°20'53.52"E ], 186 m el., deep zone, direct intuitive search, 16 November 2016, J.J. Wynne leg. 1 male, 1 juv. (SCAU), China, Guangxi Zhuang Autonomous Region, Xiufeng District, Maomaotou Cave [ 25°18'46.12"N , 110°16'12.64"E ], 225 m el., deep zone, direct intuitive search, 15 November 2016, J. J. Wynne leg. 2 males, 1 female, 4 juv. (SCAU), China, Guangxi Zhuang Autonomous Region, Yangshou County, Shangshuiyan Cave [ 24°57'43.6"N , 110°20'37.21"E ], 191 m el., deep zone, direct intuitive search, 17 November 2016, J. J. Wynne leg. Notes. This troglobiont was first found in Skeleton Cave [ 25°17'13"N , 110°13'26"E ], el. 186 m ( Golovatch and Geoffroy 2014 ). We later confirmed P. trifidus within three caves with the furthest cave (Guanshan # 4) approximately ~13 km to the south of type locality. The three caves where we detected P. trifidus are separated by a distance of ~41 km. The northernmost cave, Maomaotou Cave occurs 39.6 km north from Guangshan No. 4 Cave and Shangshuiyan Cave, which are co-located occurring within 1 km of each other. As it is currently morphologically described as one species, it now has a regional distribution. Habitat. This species was collected from the estimated deep zones of the three caves. For Maomaotou cave, we collected it within bamboo detritus at mid-cave. In Shangshuiyan Cave, specimens were collected within decomposing detritus and along muddy cave sediment deposits within a sinuous passageway. For Guangshan No. 4 Cave, refer to habitat descriptions of H. xuxiakei sp. nov.