Hyleoglomeris proximata, Chang, Hsueh-Wen, 2010

Chang, Hsueh-Wen, 2010, Pill-millipedes (Glomerida, Diplopoda) in Taiwan, Zootaxa 2477, pp. 1-20 : 11-13

Hyleoglomeris proximata sp. nov.

Figs 25–27 , 34–36 .

Material examined: Holotype male (NMNS-6286-001), Taiwan, Taitung County, Central Mountain Range, Chihpen Forest Recreation Area, at waterfall, disturbed primary forest, 22°42.262’N, 121°00.861’E, 258 m, 27 May 2008, leg. L. Dányi, Z. Korsós & E. Lazányi. Paratypes: 1 male ( ZMUM), 1 female (NMNS-6286- 002), 1 female ( HNHM), same locality, together with holotype.

Diagnosis: Differs from congeners mainly in the medium-sized telopods with bifid tips of the syncoxital horns, coupled with certain details of coloration (complete dark bands on most of the terga, and a hourglassshaped, or horologiform, axial line).

Description: Length of non-stretched but unrolled specimens ca 7.0 mm, width 2.6–2.8 mm, respectively. Holotype 2.6 mm wide. General coloration light yellow to golden with contrastingly dark brown to castaneous spots; colour pattern very vivid ( Figs 25–27 ). Head light marbled brown only in rear half; antennae dark purplish-brown; gnathochilarium dark yellow; venter yellow, tarsi very light brown. Collum slightly infuscate only laterally. Thoracic shield yellow to golden, with a subtransverse, medially slightly divided, dark, central spot in rear half, sometimes with traces of an infuscate lateral dot. Terga 3–8(9) with dark brown, transverse bands (almost fully) interrupted medially by a narrow, horologiform, axial line consisting of small light triangles both posteriorly and anteriorly; bands strongly narrowed posteriorly through large, oblong, light, marbled spots in lateral third. Either tergum 10 or terga 9 and 10 with bands fully interrupted laterally, tergum 11 usually only with a vestigial dark dot above lateral edge. Pygidium mostly dark, slightly more flavous only Head with a densely setose labrum ( Fig. 27 ). Gnathochilarium with 2+2 palps of subequal length. Ocellaria blackish, ocelli 7(8)+1, lenses very convex, translucent. Antennae with four large apical cones, segment 6 ca 2.1–2.2 times as long as high. Organ of Tőmősváry oblong-oval, elongate, ca 1.4–1.5 times as long as broad.

Collum as usual, with two transverse striae.

Thoracic shield ( Fig. 25 ) with a small hyposchism field not projecting caudad beyond tergal contour. Striae 8–10, mostly superficial, only lower 1–2 striae lying just above schism more evidently impressed: 3–4 lying above schism, one level to schism, remaining 4–5 below schism, with 2–4 (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. 25 ). Male pygidium very faintly concave medially at caudal edge.

Male leg 17 ( Fig. 34 ) particularly strongly reduced, with a high, medium-sized, rounded coxal lobe and a 4-segmented telopodite. Male leg 18 ( Fig. 35 ) less strongly reduced, with a very narrowly ogival syncoxital notch and a 4-segmented telopodite.

Telopod ( Fig. 36 ) as usual, medium-sized, with a roundly subquadrate syncoxital lobe flanked by setose, apically bifid horns. Tibia on caudal face with a small, papillate, microsetose tubercle at base of caudomedial process. Tarsus broadly rounded at apex.

Name: To emphasize the proximity, both morphological and geographic, to H. vittata .

Remarks: This species seems to be very local, especially given the large amount and range of material available for the present study (Map).

Figures

FIGURES 21 – 27. Hyleoglomeris sinuata sp. nov., male holotype (21 and 22) and male paratype from Hiusun timberland (23 and 24), and Hyleoglomeris proximata sp. nov., female paratype (25 – 27). 21 and 22, telopods (caudal and front views, respectively). 23 – 27, habitus in lateral, ventral, lateral, dorsal and ventral views, respectively. Photographed not to scale.

FIGURES 34 – 40. Hyleoglomeris proximata sp. nov., male paratype, and Hyleoglomeris vittata Verhoeff, 1929, male from Taroko National Park. 34 and 37, leg 17; 35 and 38, leg 18; 36, 39 and 40, telopod (caudal, caudal and front views, respectively). Scale bar: 0.2 (34 – 36) and 0.5 mm (37 – 40).