Bilingulus sinicus Zhang & Li, 1981

Liu, Weixin & Wynne, J. Judson, 2019, Cave millipede diversity with the description of six new species from Guangxi, China, Subterranean Biology 30, pp. 57-94 : 77-78

Bilingulus sinicus Zhang & Li, 1981

Material examined.

3 males, 3 females, 5 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, cartography station #19, direct intuitive search, 17 November 2016, J.J. Wynne leg. 4 females (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. 1 juv. (SCAU), China, Guangxi Zhuang Autonomous Region, Lingchuan County, Liangfeng Cave [25°12'34.86"N, 110°31'56.8"E], 184 m el., deep zone, direct intuitive search, 18 November 16, J.J. Wynne leg.

Notes.

This species lacked characters suggestive of troglomorphy. It had a pigmented cuticle and ommatidia were present. Thus, B. sinicus is considered a troglophile. It was first described by Zhang and Li (1981) from a cave in Guilin; no cave name or coordinate data were provided. While we detected this species in three different Guilin caves, we’re unable to determine a distance from the type locality. The caves where we detected P. trifidus is separated by an average distance of 34.1 km. Maomaotou Cave occurs to the north-northwest and is 45 km from Liangfeng Cave and 40.4 km to the north of Shangshuiyan Cave. Based upon its epigean characteristics and that this species is regionally distributed on the landscape, we consider it a troglophile.