Hyleoglomeris generalis, Liu, Weixin & Tian, Mingyi, 2015

Liu, Weixin & Tian, Mingyi, 2015, A checklist of millipede genus Hyleoglomeris Verhoeff, 1910 in mainland China, with descriptions of seven new species (Diplopoda, Glomerida, Glomeridae), Zootaxa 4032 (1), pp. 103-116 : 109

Hyleoglomeris generalis sp. n.

Figs. 5 & 6

Material examined: Holotype male ( SCAU), China, Guizhou, Qiandongnan Zizhizhou, Cengong County, Shuiwei Town, Changping Village, Cave Jiangjun Dong, 27°25’59.84’’N, 109°0’57.42’’E, 550 m, 28.VI.2014, leg. Tian Mingyi, Liu Weixin, Yin Haomin, Huang Sunbin, Wang Xinhui. Paratype. 1 female ( SCAU), same locality, together with holotype.

Etymology. To emphasize the provenance from Cave “Jiangjun” in Chinese meaning a general; noun in apposition.

Diagnosis. Keys out as H. youhao Golovatch, Liu & Geoffroy, 2012 , but differs in a residual body coloration, male leg 18 with a moderately arch-shaped syncoxital notch, a faintly concave, subtrapezium, central lobe of telopod syncoxite, coupled with a small caudomedial process of the telopod tibia.

Description. Length ca 6.5 mm (holotype), 5.5 mm (paratype), width 3.5 mm in both types. Coloration entirely pale yellow ( Fig. 5 ). Head light brown, antennae pallid, antennomere 6 ca 2.2 times (holotype) or 2.0 times (paratype) as long as wide. Ocelli at least 1+1, translucent, barely visible. Tömösváry’s organ transverse-oval, only slightly wider than long. Collum with 1+1 oval, light yellow-brownish, paramedian spots ( Figs. 5 A–B). Thoracic shield and segment 3 traces of marbled and faintly light yellow-brownish coloration.

Collum with two transverse striae. Thoracic shield with a broad hyposchism, the latter not reaching behind caudal tergal margin; 9 transverse striae, 4(5) starting below, one level to, 3(4) above schism, 4 or 5 striae (never the first and last from below) crossing the dorsum. Pygidium of both sexes regularly rounded at caudal margin.

Male leg 17 ( Fig. 6 A) with a high and regularly round shaped outer coxal lobe; telopodite 4-segmented, tarsus with two subapical spines.

Male leg 18 ( Fig. 6 B) with a mederately arch-shaped notch; telopodite 4-segmented, tarsus with one subapical spine.

Telopods ( Fig. 6 C) with a low, apically slightly concave, subtrapezium, central syncoxital lobe flanked by two setose horns, each latter crowned with a very small lobule ( Fig. 6 D). Prefemur rather faintly micropapillate laterally. Prefemur with a well-developed frontomedial trichostele. Femur with a smaller frontomedial trichostele. Caudomedial femoral process prominent, tip without membrance sac, subapically with a rounded lobe on caudal face. Tibia with a strong distomedial seta, caudomedial process vague; a distinct, papillate tubercle at base on caudal face. Tarsus rather strongly sigmoid, narrowly subacuminate apically.

Remark. Although this species has retained some pigment in the tegument, it seems to be a troglobite.

Figures

FIGURE 5. Hyleoglomeris generalis sp. n., male holotype. A – C. body, ventral, lateral and dorsal view, respectively. Photographed not to scale.

FIGURE 6. Hyleoglomeris generalis sp. n., male holotype. A. leg 17, front view. B. leg 18, front view. C. right half of telopods, front view. D. tip of syncoxital horn, front view. Scale bar: 0.5 mm.