Hyleoglomeris eusulcata Golovatch, Geoffroy & Mauriès, 2006

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 : 6-7

Hyleoglomeris eusulcata Golovatch, Geoffroy & Mauriès, 2006

Fig. 4 .

Material examined: 1 male, 1 female ( IZAS), 1 male, 2 females ( MNHN CC 156), 1 male, 1 female ( SCAU), 2 females ( GNUG), 1 male, 1 female ( ZMUM), China, Guizhou Prov., Libo County, Shuipa, Cave Shui Jiang Dong (= Shuipu Da Dong), 28.02.1995, leg. P. Trontelj.

Descriptive notes: Length ca 5.0–9.0 mm, width 2.8–4.2 mm in both sexes. Coloration nearly entirely pallid. Ocelli at least 3+1, translucid, barely visible.

Collum with one transverse stria. Second tergite with a peculiar transverse sulcus above schism, also with 8–11 transverse striae (versus 8 or 9), three starting below, two level to, the remaining striae above schism, seven from below (versus 5 or 7, as given in Golovatch et al. 2006) crossing the dorsum (never the uppermost one).

Male leg 17 ( Fig. 4 A) with a rather high (versus low) and irregularly shaped outer coxal lobe; telopodite 4-segmented, tarsus with only one subapical spine.

Male leg 18 ( Fig. 4 B) with a rather narrowly arch-shaped syncoxital notch; telopodite 4-segmented.

Telopods ( Fig. 4 C–E) with a high (versus rather low), linguiform (versus subquadrate), sparsely setose, central syncoxital lobe flanked by two setose horns, each latter crowned with a minute lobule supplied with a subapical (versus apical) setoid filament ( Fig. 4 E). Prefemur and, to a lesser extent, femur (versus prefemur alone) micropapillate laterally. Caudomedial femoral process prominent, subapically with a rounded lobe on caudal face. Caudomedial process of tibia evident, membranous; tibial tubercle on caudal face distinct, papillate. Tarsus rather moderately sigmoid, narrowly rounded (versus subacuminate) apically.

Remarks: This species has been the only Hyleoglomeris known from Guizhou Province, presumably being a troglobite found in Cave La Tai Dong, Libo County ( Golovatch et al. 2006). The above new samples derive from a nearby cave, being in an almost complete agreement with the original description (e.g., the presence of a single transverse stria on the collum, of a strong sulcus on the second tergite, of 4-segmented male telopodites 17, of a narrow syncoxital notch in male leg 18, of a caudal lobe on the caudomedial femoral process of the telopods, of a setoid filament at the apex of the telopod syncoxital horns). Minor variations concern only the shape of the central lobe of the telopod syncoxite (subquadrate to linguiform), the position of the apical filament of the telopod syncoxital horns (truly apical to subapical), the presence of papillae also in the laterobasal parts of the telopod femur, and the shape of the telopod tarsus (narrowly rounded to subacuminate) and a few other traits (see above).

Figures

FIGURE 4. Hyleoglomeris eusulcata Golovatch, Geoffroy & Mauriès, 2006, male from Cave Shui Jiang Dong. A: leg 17, front view. B: leg 18, front view. C & D: right half of telopods, front and caudal views, respectively. E: apex of telopod syncoxital horn, front view. Scale bar: 0.2 mm (E drawn not to scale).