Hyleoglomeris aurata, Chang, Hsueh-Wen, 2010

Chang, Hsueh-Wen, 2010, Pill-millipedes (Glomerida, Diplopoda) in Taiwan, Zootaxa 2477, pp. 1-20 : 6-8

Hyleoglomeris aurata sp. nov.

Figs 4–6 , 12–14 .

Material examined: Holotype male (NMNS-6284-001), Taiwan, Taitung County, Lanyu Island, Yeyou village, Shia Tien Chi (small pond), 22°05’N, 121°31’E, 208 m, sclerophyll “laurisilva” forest, under bark and in litter, 21 September 2007, leg. Z. & P. Korsós. Paratypes: 1 female (NMNS-6284-002), 1 female ( HNHM), same locality, together with holotype.

Diagnosis: Differs from congeners mainly in its colour pattern: light, golden background coloration with contrasting dark spots which are absent only from the collum and thoracic shield, sometimes also from the pygidium.

Description: Length of non-stretched but unrolled specimens ca 8.0 (male), 7.0 and 10.0 mm (females), width 4.0 (male), 3.0 and 4.3 mm (females), respectively. General coloration light yellow to golden with contrastingly dark spots, latter absent only from especially brightly golden-coloured collum and thoracic shield; colour pattern very vivid ( Figs 4–6 ). Head light marbled yellow-brown, labrum sometimes lighter yellow at least partly; antennae dark to light purplish-brown; gnathochilarium dark yellow; pleura sometimes slightly infuscate, dark yellow to light brownish, tarsi light brown to brown. Terga 3–11 usually with 2+2 marbled dark brown spots/bands. Each of terga 3–8(9) with 1+1 oblong, transverse, lateral spots/bands in anterior half (only lateral and caudal margins as usual like narrow light bands), these still lying dorsally of lateral edge and, on each side, being in touch with 1+1 similarly large, marbled, dark, transverse, paramedian markings/spots. On terga (3)4–8(9), these paramedian spots extending also onto caudal half, sometimes as nearly independent dots, usually reaching light marginal band. Terga 9–(10)11 with 2+2 dark spots roundish and widely separated except frontally. Sometimes tergum 11 without traces of a paramedian pair of dark spots. Axial line light, usually broad, evidently narrowed forward, mostly traced between dark paramedian spots as individual, sometimes subtriangular, light spots. Pygidium with only 1+1 vestigial, dark, lateral dots near base.

Head with a densely setose labrum ( Fig. 6 ). Gnathochilarium with 2+2 palps of subequal length. Ocellaria blackish, ocelli 5(6)+1, lenses very convex, translucent. Antennae with four large apical cones, segment 6 ca 2.2–2.3 times as long as high (in holotype abnormal, apparently regenerated, left one especially short). Organ of Tőmősváry oblong-oval, elongate, ca 1.4–1.5 times as long as broad ( Fig. 6 ).

Collum as usual, with two transverse striae.

Thoracic shield ( Fig. 4 ) with a small hyposchism field not projecting caudad beyond tergal contour. Striae 6–7, mostly superficial, only one above schism more evidently impressed: 1–2 lying above schism, one level to schism, remaining 4–5 below schism, with 3–4 (different) complete, crossing the dorsum. Following terga in front of pygidium extremely faintly bisinuate at caudal edge and with two striae starting above lateral edge ( Fig. 5 ). Male pygidium very faintly concave medially at caudal edge.

Male leg 17 ( Fig. 12 ) particularly strongly reduced, with a low, small, rounded coxal lobe and a 4- segmented telopodite. Male leg 18 ( Fig. 13 ) less strongly reduced, with an ogival syncoxital notch and a 4- segmented telopodite.

Telopod ( Fig. 14 ) as usual, with a rounded subtrapeziform syncoxital lobe flanked by high, setose, distally attenuating horns. Tibia on caudal face with a small, papillate, microsetose tubercle at base of caudomedial process. Tarsus rather narrowly rounded at apex, only modestly curved.

Name: To emphasize the dominating golden coloration.

Remarks: This species seems to be endemic to Lanyu Island (Map).

Figures

FIGURES 1 – 6. Mauriesia splendida sp. nov., male holotype (1 – 3), and Hyleoglomeris aurata sp. nov., female paratype (4 – 6). Habitus in lateral, dorsal, ventral, lateral, dorsal and ventral views, respectively. Photographed not to scale.

FIGURES 12 – 14. Hyleoglomeris aurata sp. nov., male holotype. 12, leg 17; 13, leg 18; 14, telopod (caudal view). Scale bar: 0.2 mm. Special designation: front f. p., front femoral process (hidden behind caudal femoral process).