A review of the cavernicolous genus Guiaphaenops Deuve, with the description of a new species (Coleoptera, Carabidae, Trechinae) Author Feng, Bin Author Wei, Guofu Author Tian, Mingyi text ZooKeys 2017 669 53 63 http://dx.doi.org/10.3897/zookeys.669.12334 journal article http://dx.doi.org/10.3897/zookeys.669.12334 1313-2970-669-53 5491B28DB9CD4F7493DB9688F5F3C727 Guiaphaenops lingyunensis Deuve, 2002 Figs 1, 3b, 4b, 5c, d Guiaphaenops lingyunensis Deuve, 2002: 518 (type locality: Cave Shen Dong); Ueno , 2006: 24 Diagnosis. A smaller species, latero-margins of pronotum slightly sinuate before hind angles (Fig. 3b); elytra with prehumeral borders broadly arcuate, the 1st pore of the humeral set of umbilicate pores at level behind anterior dorsal pore, while the 7th pore before level of the preapical pore (Fig. 4b); the median lobe of aedeagus slenderer and more elongated than in G. deuvei sp. n., with apical lobe thinner in dorsal view (Fig. 5c, d). Material studied. 1 male, X-14-2015, cave Mi Dong, Mawang Cun, Sicheng Zhen, Lingyun Xian, Baise, Guangxi, 24°24'20"N , 106°35'52"E , 410 m, XII-9-2015, Mingyi Tian & Jujian Chen leg., in SCAU; 1 female, ibid, VI-9-2015, Mingyi Tian, Weixin Liu, Xinhui Wang & Minruo Tang leg., in SCAU. Distribution. China (Guangxi). Known from three caves (Shen Dong, Mi Dong and a cave near Dazai Tun) in Lingyun Xian ( Deuve 2002 ; Ueno 2006 ) (Fig. 1a, b, d). Mi Dong is located at about one kilometre from Mawang Cun, in a valley below the main road from Lingyun to Leye. It opens above a path from the village to Sha Dong, a deeper and larger cave nearby. It is short, after 20 m from the entrance there is a large and complete dark room of 30-50 m in diameter. Majority part of this room was muddy or wet. The two beetle specimens were found quickly running on the wet ground. Other cave animals observed in Mi Dong were two species of millipedes and a bat. Figure 6. The type locality cave of Guiaphaenops deuvei Tian, Feng & Wei, sp. n. a cave entrance b a millipede in cave.