Hyleoglomeris hongkhraiensis, Likhitrakarn, Natdanai, Golovatch, Sergei I. & Panha, Somsak, 2015

Likhitrakarn, Natdanai, Golovatch, Sergei I. & Panha, Somsak, 2015, Three new species of the pill millipede genus Hyleoglomeris Verhoeff, 1910, from northern Thailand (Diplopoda, Glomerida, Glomeridae), Zootaxa 4044 (1), pp. 130-140 : 131-134

publication ID

https://doi.org/ 10.11646/zootaxa.4044.1.7

publication LSID

lsid:zoobank.org:pub:917B38A3-49BA-4509-AED1-729B78A1EB18

DOI

https://doi.org/10.5281/zenodo.6109798

persistent identifier

https://treatment.plazi.org/id/03A387E9-5047-FFE2-FF25-F902FDBC7A8F

treatment provided by

Plazi

scientific name

Hyleoglomeris hongkhraiensis
status

sp. nov.

Hyleoglomeris hongkhraiensis sp. n.

Figs 1 View FIGURE 1 & 2 View FIGURE 2 .

Holotype male ( CUMZ), Thailand, Chiang Mai Province, Doi Saket District, Huai Hong Khrai Royal Development Study Centre, 445 m a.s.l., 18°52'47"N 99°13'22"E, 02/07/2014, leg. N. Likhitrakarn.

Paratypes. 8 males, 9 females ( CUMZ), 1 male, 1 female ( ZMUC), 1 male, 1 female ( ZMUM ƿ2712), 1 male, 1 female ( NHMW), same locality, together with holotype; 1 female ( CUMZ), same locality, 12/11/2015, leg. N. Likhitrakarn.

Name. An adjective to emphasize the type locality.

Diagnosis. Differs by the thoracic shield being contrasting yellowish against a dark background, the presence of modest granulations laterally on the telopod prefemur and femur, coupled with a subtrapeziform, large, slightly concave, central lobe of the telopod syncoxite.

Description. Length of non-stretched, but unrolled specimens ca 6.0– 7.4 mm (males), 6.3–9.3 mm (females), width 2.4–3.4 (males), 2.8–4.5 mm (females).

Body mostly dark ( Fig. 1 View FIGURE 1 A–F). Head and collum blackish to dark brownish. Legs and venter dark brownish to light yellowish. Thoracic shield contrasting yellowish, usually with a narrow dark band caudally and a pair of dark paramedian spots flanking the midline. Mid-dorsal spots on each of terga 3 to 11 usually rather parallel-sided, but quite often V-shaped, subtriangular, often with a distinct, more or less wide and complete, yellow to greyish, axial stripe ( Fig. 1 View FIGURE 1 A, D & E), this latter usually growing broader and clearer on pygidium. Lateral sides of each of terga 3 to 11 also with a pair of large, sublateral, yellow to marbled yellow-brownish spots normally not reaching translucent caudal and lateral edges ( Fig. 1 View FIGURE 1 A, C–E). Pygidium with a pair of yellow to greyish parallel stripes always reaching a translucent caudal margin.

Labrum sparsely setose ( Fig. 2 View FIGURE 2 A). Gnathochilarium with 2+2 palps of subequal length. Ocellaria blackish, ocelli 6(7)+1, cornea very convex, translucent. Antennae with four evident apical cones, segment 6 ca 1.4–1.5 times as long as high. Organ of Tömösváry oblong-oval, elongate, ca 1.2–1.4 times as long as broad ( Fig. 2 View FIGURE 2 A).

Collum as usual, with two transverse striae ( Fig. 2 View FIGURE 2 A). Thoracic shield with a small hyposchism field not projecting caudad behind tergal margin. Striae 7–8, mostly superficial, only lower 3–4 lying above schism, one level to schism, remaining 4 below schism, with 4–5 complete, crossing the dorsum ( Fig. 2 View FIGURE 2 B). Terga 3 and 4 rather broadly rounded laterally. Following terga in front of pygidium faintly concave medially at caudal edge and with 3 striae starting above lateral edge, sometimes middle stria fading away towards midway. Male pygidium very faintly concave medially at caudal edge.

Male legs 17 ( Fig. 2 View FIGURE 2 C–E) particularly strongly reduced, with a rather low to medium-sized, often irregularly rounded coxal lobe and a 4-segmented telopodite. Male legs 18 ( Fig. 2 View FIGURE 2 F) less strongly reduced, with a more or less narrowly ogival syncoxital notch and a 4-segmented telopodite; femur with a small, setose, caudomedial tubercle (k) near apex.

Telopods (= male legs 19) ( Fig. 2 View FIGURE 2 G–J) as usual, strongly enlarged and stout, with a subtrapeziform, large, roundly emarginated syncoxital lobe flanked by two setose horns, each of the latter being crowned by a subapical setoid filament ( Fig. 2 View FIGURE 2 G–I). Prefemur and femur modestly granulate laterally ( Fig. 2 View FIGURE 2 G & J). Caudomedial femoral process prominent, subapically with a rounded subtriangular lobe on caudal face and modest granulations at base ( Fig. 2 View FIGURE 2 G & J). Caudomedial process of tibia evident, directed mesad. Tarsus rather moderately sigmoid, narrowly rounded apically, with a strong terminal seta.

Remarks. The Huai Hong Khrai Royal Development Study Centre where this new species was found was established under the royal initiative in 1982 in the area of Khun Mae Kuang National Forest Reserve, Chiang Mai Province. It covers approximately 8,500 rai (1,360 hectares). H.M. King Bhumibol realized that the area which used to be abundantly forested and rich in natural resources was deteriorating. His Majesty thus ordered the study centre set up with an objective to conduct research and experimentation using appropriate progressive methods which suited the development needs of the Northern Region, especially the conservation of watersheds, reforestation and agricultural development. Nearly 30 years ago, the mobile plantation area was rehabilitated to Dry Dipterocarp Forest as before.

CUMZ

Chulalongkorn University Museum of Natural History

ZMUC

Zoological Museum, University of Copenhagen

ZMUM

Zoological Museum, University of Amoy

NHMW

Naturhistorisches Museum, Wien

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Glomerida

Family

Glomeridae

Genus

Hyleoglomeris

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