Glyphiulus hainanensis, Jiang & Chen & Xie, 2022

Jiang, Xuan-Kong, Chen, Hui-Ming & Xie, Zhi-Cai, 2022, Description of two new species of the genus Glyphiulus Gervais, 1847 (Diplopoda: Spirostreptida: Cambalopsidae) from southern China, Zootaxa 5141 (4), pp. 358-372 : 367

publication ID	https://doi.org/ 10.11646/zootaxa.5141.4.4
publication LSID	lsid:zoobank.org:pub:750CACB0-95E1-4404-B94D-ECAB53E9903C
DOI	https://doi.org/10.5281/zenodo.6592975
persistent identifier	https://treatment.plazi.org/id/222D87F0-6E75-9C75-FF56-F22CFD6912F5
treatment provided by	Plazi
scientific name	Glyphiulus hainanensis
status	sp. nov.

Treatment

Glyphiulus hainanensis View in CoL sp. nov.

Figs 1C View FIGURE 1 , 6–8 View FIGURE 6 View FIGURE 7 View FIGURE 8 .

Type material. Holotype male, China: Hainan Province, Ledong County, Jianfengling Nature Reserve, Mingfenggu , 18°44'37.81" N, 108°50'40.06" E, 931 m a.s.l., 30 March 2018, X.K. Jiang leg. GoogleMaps Paratypes: 1 male and 6 females, same data as holotype GoogleMaps .

Etymology. This specific name is derived from the type locality, Hainan Island which is the second largest island in China, adjective.

Diagnosis. This species with contiguous processes on the coxosternum of the male first leg-pair belongs to the Glyphiulus javanicus -group, and it can be separated from other species in this group by (1) the crests on the collum being complete and developed, and the carinotaxic formula I–III + P + M ( Fig. 6A View FIGURE 6 ); (2) male legs I 2 or 3 segmented, slightly longer than the coxosternal process ( Fig. 7A View FIGURE 7 ); (3) the coxite process of the anterior gonopod prolonged strightly, with a sharp tip ( Fig. 8A View FIGURE 8 ); (4) male femora VI and VII modified, with a tubercle distoventrally ( Fig. 7B View FIGURE 7 ).

Description. Body segments with 59–70p + 1–4a + T (holotype 68p + 1a + T). Body size of ca. 44–57 mm long and 2.3–3.0 mm wide (holotype 54 and 2.6 mm, respectively). Color generally earthy yellow, with ozoporiferous tubercles light yellow ( Fig. 1C View FIGURE 1 ).

Head. Each eye patch with 20–22 pigmented eyes arranged in two or three regular linear rows ( Fig. 6A View FIGURE 6 ). Antennae ( Fig. 6A View FIGURE 6 ) slender, densely setose. Antennomeres 1, 6–7 cylindrical, 2–5 clavate. Relative antennomere lengths 5≥3>4≥2≥6>1≥7. Labrum with four teeth anteromedially. Gnathochilarium with a separate promentum, polytrichous.

Collum. All crests complete and strong, carinotaxic formula I–III + P + M ( Fig. 6A View FIGURE 6 ).

Body rings. Postcollum constriction modest. Tegument rough ( Fig. 6C, D, F View FIGURE 6 ). Metatergal strongly crested, carinotaxic formula 2/2+I/i+3/3+I/i+2/2 ( Fig. 6B–D View FIGURE 6 ). Ozoporiferous tubercles with rounded tip, as high as broad, larger than other tubercles ( Fig. 6B–D View FIGURE 6 ). Lateral crests fully developed ( Fig. 6B, D, F View FIGURE 6 ). Midbody rings round in cross-section ( Fig. 6B View FIGURE 6 ).

Telson. Epiproct simple, with a rounded caudal ridge and a small dorsal tooth ( Fig. 6F View FIGURE 6 ). Paraprocts convex, polytrichous ( Fig. 6E, F View FIGURE 6 ). Hypoproct crescent-shaped ( Fig. 6E View FIGURE 6 ).

Walking legs. Slender, nearly as long as body width, densely setose, with a fine accessory claw ( Figs 6B View FIGURE 6 , 7C View FIGURE 7 ).

Male sexual characters. Male legs I strongly reduced, 2 or 3 segmented, with a pair of medial coxosternal hooked processes in contact medially ( Fig. 7A View FIGURE 7 ). Femora VI and VII inflated, possess a small tubercle distoventrally ( Fig. 7B View FIGURE 7 ). Coxite of anterior gonopods ( Fig. 8A View FIGURE 8 ) shield-like, ridged medially, with 1 or 2 lines of microsetae anteriorly. Coxite processes prolonged straightly, with sharp tip, obviously longer than telopodites. Telopodites located laterally, one-segmented, slender, digitiform, with several distal setae and a field of microsetae at base. Coxite of posterior gonopods ( Fig. 8B View FIGURE 8 ) with a medial lamelliform lobe and two rows of strong, curved setae at mediolateral margin. Flagella short, slender, and zigzag-edged, situated at the tip of coxite lobe. Lateral margin of coxite with a round field of microsetae.

Ecology. This species is epigean and was found in the litter layer of a deciduous forest ( Fig. 1D View FIGURE 1 ).

Distribution. Known only from the type locality.