Hyleoglomeris xueju, Golovatch, Sergei I., Liu, Weixin & Geoffroy, Jean-Jacques, 2012

Golovatch, Sergei I., Liu, Weixin & Geoffroy, Jean-Jacques, 2012, Review of the millipede genus Hyleoglomeris Verhoeff, 1910 in China, with descriptions of new species (Diplopoda, Glomerida, Glomeridae), Zootaxa 3358, pp. 1-27 : 18-19

Hyleoglomeris xueju sp. n.

Fig. 13 .

Material examined: Holotype male ( IZAS), China, Guangxi Prov., Du'an County, Xia'ao Town, Yao Nan Village, Cave Yao Nan Dong, Cave 1, ca 350 m a.s.l., 24.244233°N, 107.940118°E, debris, Berlese extraction, 26.04.2010, leg. L. Deharveng et al. (CHIgx10–65). Paratypes. 1 female ( IZAS), 1 male, 1 female ( MNHN CC 178), 1 male ( SCAU), 1 male ( ZMUM), same locality, together with holotype.

Name. To emphasize the animal’s provenance from a cave, “ xueju ” in Chinese meaning a “cave-dweller”; a noun in apposition.

Diagnosis: Differs in its residual coloration of the ocelli, as well as by the high, linguiform, central lobe of the telopod syncoxite, the presence of a distinct chitinized lobe from the telopod caudomedial femoral process, and the absence of a setoid filament at the tip of the telopod syncoxital horns. See also Key below.

Description: All characters like in H. tiani sp. n., except as follows.

Length ca 6.0– 7.5 mm, width 3.8–4.0 mm in both sexes. Holotype 7.0 mm long, 4.0 mm wide. Coloration almost entirely pallid, but ocelli brownish to dark brown.

Ocelli 4+1 or 5+1, translucid, well visible. Antennomere 6 ca 1.9–2.0 times as long as high.

Second tergite with 7–9 transverse striae, 1–3 starting below, 1 or 2 level to, the remaining striae above schism, 4 or 5 striae (various, but not last from below) crossing the dorsum.

Male leg 17 ( Fig. 13 A) with a high and irregularly shaped outer coxal lobe; telopodite 4-segmented, tarsus with two subapical spines.

Male leg 18 ( Fig. 13 B) with an arch-shaped syncoxital notch; telopodite 4-segmented.

Telopods ( Fig. 13 C, D) with a high, linguiform, central syncoxital lobe flanked by two setose horns, each latter crowned by a particularly inconspicuous lobule. Both prefemur and, to a lesser degree, femur finely papillate laterally. Caudomedial femoral process ( Fig. 13 D) prominent, subapically with a distinct lateral lobe on caudal face. Caudomedial process of tibia evident, membranous; tibial tubercle on caudal face distinct, papillate. Tarsus rather evidently sigmoid, narrowly rounded apically.

Remark: Due to some of its traits being troglomorphic, this species might well prove to be a troglobite, but pigmented ocelli might rather be evidence of troglophily.

Figures

FIGURE 13. Hyleoglomeris xueju sp. n., male paratype. A: leg 17, front view. B: leg 18, front view. C: right half of telopods, front view. D: caudomedial femoral process, caudal view. Scale bar: 0.2 mm.