Hyleoglomeris sinuata, Chang, Hsueh-Wen, 2010

Chang, Hsueh-Wen, 2010, Pill-millipedes (Glomerida, Diplopoda) in Taiwan, Zootaxa 2477, pp. 1-20 : 8-10

Hyleoglomeris sinuata sp. nov.

Figs 15–24 , 28–33 .

Material examined: Holotype male (NMNS-6285-001), Taiwan, Nantou County, Jen-Luen (= Ren-Luen), Cryptomeria forest, 1600 m a.s.l., E1-1 plot, August 2006, leg. Tunghai University Spider Research Team (I- Min Tso). Paratypes: 1 male (NMNS-6285-002), Nantou County, Hiusun timberland, 24 April 1998, leg. S. H. Wu; 1 female (NSYSUB), same locality, 7 April 1998, leg. S. H. Wu; 1 female ( IBSS), same locality, 25 October 1997, leg. S. H. Wu; 1 female ( HNHM), Nantou County, Kao-Leng Dyi, 18 km W of Wushe, 24°04.605’N, 121°07.583’E, 2074 m, 18-19 April 2002, leg. D. Austine, Gy. Fábián & O. Merkl; 1 female ( HNHM), Nantou County, Shueili, Renluen, experimental forest area, mixed Cryptomeria & Taiwania forest, 23°42.783’N, 120°54.333’E, 1557 m, 17 May 2008, leg. L. Dányi, Z. Korsós & E. Lazányi; 1 female ( ZMUC), Nantou County, Meifeng, 24°06’N, 121°12’E, 2300 m, 5–6 September 2003, leg. G. Csorba & Z. Korsós; 1 female ( HNHM), Nantou County, Renai Township, Meizilin, Hiusun Forest Area, Fording Trail, 24°05.322’N, 121°01.763’E, disturbed secondary broad-leaved forest, 717 m, 7 October 2009, leg. L. Dányi & E. Lazányi; 1 female (NMNS-6285-003), Taoyuan Township, provincial highway No. 7, Mt Ta-Man, 7 April 2001, leg. S. H. Wu; 1 male ( ZMUM), Kaohsiung County, Liouguei, Shanping Workstation, July 2004, leg. M. J. Hung.

Diagnosis: Differs from congeners mainly in the unusually strongly sinuate tarsi and the bifid caudofemoral processes of the telopods ( Figs 21, 22 , 30 and 31 ), as well as by the colour pattern which is often identical to that of Mauriesia splendida .

Description: Length of non-stretched but unrolled specimens ca 6.0–6.5 (male) or 6.5–9.0 mm (female), width 2.3–2.7 (male) or 2.8–4.0 mm (female), respectively. Holotype ca 6.0 mm long and 2.7 mm wide. General coloration light brown to blackish with contrastingly whitish to yellow or red-yellow spots ( Figs 15– 24 ). Head and antennae marbled castaneous brown to black-brown. Thoracic shield with a large, dark, central spot (almost) reaching fore margin and divided caudad by a light spot, also with large, dark, lateral spot on each side. Following terga in front of pygidium with a light, wide, complete axial line and 1+1 light, large, marbled, oblong, lateral spots. Pygidium mostly light, with a small, or more elongate, longitudinal, dark spot stretching down from base caudad; laterobasal part more or less narrowly infuscate. Venter and legs light yellow to red-brown to marbled brown.

Head with a densely setose labrum ( Figs 17 and 20 ). Gnathochilarium with 2+2 palps of subequal length. Ocellaria blackish, ocelli 6(7, 8)+1, lenses very convex, translucent. Antennae with four large apical cones, segment 6 ca 2.2–2.3 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 ( Figs 15, 18 and 23 ) with a small hyposchism field not projecting caudad beyond tergal contour. Striae 8–10, mostly superficial, only first three above schism more evidently impressed: 3–4 lying above schism, one level to schism, remaining 3–5 below schism, with 3–6 (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 truncate medially at caudal edge.

Male leg 17 ( Fig. 28 ) particularly strongly reduced, with a low, very small, rounded coxal lobe and a 4- segmented telopodite. Male leg 18 ( Figs 22 and 29 ) less strongly reduced, with a broadly ogival syncoxital notch and a 4-segmented telopodite.

Telopod ( Figs 21, 22 , 30 and 31 ) usual, medium-sized, with a broad, rounded to faintly concave, subtrapeziform syncoxital lobe flanked by especially high, slender, setose, distad attenuating horns; latter’s tip bulbous and shaggy. Femur with a conspicuously bifurcate caudomedial process. Tibia on caudal face with a small papillate tubercle at base of caudomedial process. Tarsus unusually sinuate, twisted, very narrowly rounded at apex.

Name: To emphasize the unusually strongly twisted telopod tarsus.

Remarks: This species seems to be rather widespread in and endemic to the central parts of Taiwan proper (Map). Korsós (2004) referred the female from Meifeng to a Hyleoglomeris sp.

Figures

FIGURES 15 – 20. Hyleoglomeris sinuata sp. nov., male paratype from Shangping Workstation (15 – 17), male holotype (18 and 19) and female paratype from Hiusun Forest (20). Habitus in lateral, dorsal, ventral, lateral, dorsal and ventral views, respectively. Photographed not to scale.

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 28 – 33. Hyleoglomeris sinuata sp. nov., male paratype from Shangping Workstation. 28, leg 17; 29, leg 18; 30 and 31, telopod (caudal and front views, respectively). 32, telopod syncoxite (caudal view). 33, tip of telopod syncoxital horn. Scale bar: 0.1 mm; figure 33 drawn not to scale.

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.