Glyphiulus polytrichus (Golovatch, Geoffroy, Mauriès and VandenSpiegel, 2011), new combination

Figs 2, 23–34

Hypocambala polytricha Golovatch, Geoffroy, Mauriès and VandenSpiegel, 2011b: 169.

Material examined: 14 males, 10 females and 6 juveniles, China, Guangxi Zhuang Autonomous Region, Longzhou County, Jinlong Town, Hengluo Village, Zhawaitun, Yan Cave, 22.672297° N, 106.769006° E, alt. 359 m, 18 October 2018, X.K. Jiang & H.M. Chen leg. (IBGAS).

Diagnosis: This species can be distinguished from the G. granulatus -group by the male legs I with complete telopodites and the coxosternal processes situated close to each other (Figs 29, 30). It can be distinguished from other species of the G. javanicus -group except Glyphiulus costulifer Golovatch et al., 2007 and G. percostulifer Golovatch et al., 2007 by the male legs I with complete telopodites and the relatively more strongly separated coxosternal processes (Figs 29, 30); crests on medial parts of collum slightly degenerated with a carinotaxic pattern of I–IV+5a+pc+ma (Figs 23, 24) (see Golovatch et al. 2007a, b for an explanation of this formula); flagellum of posterior gonopod short (Figs 33, 34). The new species can be separated from G. costulifer by crest 5a being as long as crest ma on collum (Fig. 23), whereas crest 5a is three times as long as ma in G. costulifer; flagellum of posterior gonopod pilose (Fig. 34), vs. smooth in G. costulifer. It can be separated from G. percostulifer by the slender telopodites of the anterior gonopod, vs. short and stout in G. percostulifer.

Distribution: Known only from the type locality.

Remarks: According to the review of Glyphiulus (Golovatch et al. 2007a, b), no character can exclude G. polytrichus comb. nov. from this genus, and the reassignment is also supported by the phylogenetic analysis. The two species groups of Glyphiulus can be separated by the characters of the first leg-pair of the male (Golovatch et al. 2007a, b, 2011a, b, 2012; Jiang et al. 2017). On the one hand, based on morphological traits, G. polytrichus comb. nov. should be placed in the G. javanicus -group by the presence of contiguous processes on the coxosternum of the male first leg-pair, and possibly close to those species which show complete telopodites, e.g. G. guangnanensis. On the other hand, the phylogenetic analysis undoubtedly assigns this species close to the G. granulatus -group. It is not possible to resolve this disagreement for now, and here we reassign this species to Glyphiulus as an ungrouped species.