Hyleoglomeris curtisulcata, 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 : 21-22

Hyleoglomeris curtisulcata sp. n.

Fig. 16 .

Material examined: Holotype male ( IZAS), China, Guangxi Prov., Huanjiang County, Mulun Karst, Cave Gang Lai Dong, 25.11278ºN, 107.98309ºE, 14.03.2005, leg. L. Deharveng & A. Bedos (CHIgx05–111). Paratypes. 1 female ( IZAS), 1 male, 1 female ( MNHN CC 180), same locality, together with holotype.

Name: To emphasize the presence of a rather short transverse sulcus on the second tergite.

Diagnosis: Differs from congeners except H. eusulcata and H. speophila Golovatch, Geoffroy & Mauriès, 2006 , from Laos ( Golovatch et al. 2006), by the presence of a transverse sulcus above the schism on the second tergite (yet shorter, reaching only ca 1/5 height of the second tergite), from H. speophila by the presence of only one complete stria on the collum and of a lobe on the caudomedial process of the telopod femur, from H. eusulcata by the absence of a setoid filament at the tip of the syncoxital horns. See also Key below.

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

Length ca 6.0 (paratype) to 7.5 mm (holotype) in male, 7.5–8.0 mm in female; width 3.7 (holotype) or 3.8 mm (paratype) in male, 3.9 or 4.5 mm in female. Coloration entirely pallid.

Ocelli at least 3+1, translucid, barely visible. Antennomere 6 ca 2.1 times as long as high.

Collum with one transverse stria. Second tergite with six transverse striae, two starting below, one level to, the remaining striae above schism, 3 or 4 striae (not last two ones from below, both forming a rather short, but evident transverse sulcus above schism) crossing the dorsum.

Male leg 17 ( Fig. 16 A) with a rather low and irregularly shaped outer coxal lobe; telopodite 3-segmented, tarsus with two subapical spines.

Male leg 18 ( Fig. 16 B) with an arch-shaped syncoxital notch; telopodite 4-segmented.

Telopods ( Fig. 16 C–E) with a linguiform, sparsely setose, central syncoxital lobe flanked by two setose horns, each latter crowned by an inconspicuous lobule ( Fig. 16 E). Both prefemur and, to a lesser extent, femur micropapillate laterally. Caudomedial femoral process prominent, subapically with a distinct lateral lobe on caudal face ( Fig. 16 D). Caudomedial process of tibia evident, membranous; tibial tubercle on caudal face distinct, non-papillate. Tarsus rather evidently sigmoid, narrowly rounded apically.

Remark: Due to its troglomorphic traits, this species is likely to represent a troglobite.

Figures

FIGURE 16. Hyleoglomeris curtisulcata sp. n., male paratype. A: leg 17, front view. B: leg 18, front view. C: left half of telopods, front view. D: caudomedial femoral process, caudal view E: tip of syncoxital horn, front view. Scale bar: 0.2 mm (E drawn not to scale).