Hyleoglomeris dodongiensis Mikhaljova et Lim, 2018

Mikhaljova, E. V. & Lim, K. - Y., 2018, New and poorly-known millipedes (Diplopoda) from Korea, Far Eastern Entomologist 349, pp. 1-10 : 2-6

Hyleoglomeris dodongiensis Mikhaljova et Lim , sp. n.

Figs 1–8

MATERIAL. Holotype – ♂ ( NIBRIV0000810169 ), Republic of Korea: Gyeongsangbuk-do: Ulleung-gun, Dodong-ri, Bongrae-Fall , 9.V2013, leg. K.-Y. Lim.

IV0000810174), 3 ♀ ( NIBR), 2 ♂, 1 ♀ ( FSCB), 1 ♂, 1 ♀ ( ZMUM), the same label as in holotype .

habitus, ventral view.

DESCRIPTION. Length of non-stretched but unrolled specimens 7.9–9.0 mm

(male) or 8.0–9.0 mm (female), width 4.0– 4.1 mm (male and female). Background coloration of head black brown with several small light spots between and above antennal sockets; clypeus, labrum, Tömösváry’s organs and bases of antennal sockets light beige. Ventral part of head light beige, some of gnathochilarium structures brown. Ocelli black. Antennae dark brown with light beige apex. Collum with a large oval marbled black brown central poorly noticeable spot. Thoracic shield with pair of marbled black brown oblong spots placed laterally ( Fig. 1 ). Each following tergite (including following tergite in front of pygidium) with pair of marbled black brown lateral spots and a translucid caudal margin. The spots can be poorly noticeable. Pigidium black brown with a lucid caudal margin but without any pattern.

Venter beige-gray ( Fig. 2 ). Legs light brown. Telopods marbled light brown.

Head with a setose labrum. Ocelli 5(6)+1 (male and female), gradually reducing in size toward Tömösváry’s organ; lenses very convex. Antennae with four apical cones, segment 6 ca 2.2–2.3 times longer than wide. Organ of Tömösváry oblong-

oval, elongate, ca 1.4–1.5 times as long as broad.

– telopod, front view; 6 – distal part of telopod syncoxital lateral horn. Scales in mm.

Dorsum smooth. Collum semicircular, as usual, with two transverse striae.

Thoracic shield with 10–11 (male) or 9–10 (female) delicate striae, of which only

3–6 entirely crossing dorsum. Length of the striae varied. As usual, anterior border of thoracic shield with one stria concealed under caudal margin of collum. Hypo-

schism field relatively narrow, not projecting caudad beyond tergal contour.

Following terga in front of pygidium extremely faintly bisinuate at caudal edge and with two striae starting above lateral edge. Pigidium delicately sinuate medially at caudal margin.

Leg 17 ( Fig. 3 ) with small and irregularly rounded outer coxal lobe, telopodite

4-segmented with four claws apically. Leg 18 ( Fig. 4 ) with a subtriangular syncoxital notch; telopodite 4- segmented.

syncoxital lobe flanked by two lateral horns, ventral view.

Telopods ( Figs 5–8 ) with ovoid, horizontally stretched, central syncoxital lobe curved anteriad. Surface of syncoxital lobe smooth. Syncoxital lateral horns not very high, directed caudad, covered with tiny tubercles; each horn crowned by an ovale lobule. Micropapillate laterally prefemur with a long, inner digitate process crowned with a long flagelloid. Femur with a similar antero-mesal process also crowned by a flagelloid and posteriorly with a large inner outgrowth apically bearing a membranous sack curved forward. Tibia with a curved medial outgrowth posteriorly.

Tarsus with a somewhat curved caudad distal part and a strong subapical seta.

DIAGNOSIS. Differs from congeners mainly by the telopod syncoxital horns covered with tiny tubercles, combined with the coloration pattern of dorsum with pair of marbled black-brown oval lateral spots on each tergite including the thoracic shield.

ETYMOLOGY. The specific epithet refers to the type locality.

REMARKS. At the moment, 6 species have authentically been recorded from the Korean Peninsula (Mikhaljova & Lim, 2006). New species seems to be especially close to Hyleoglomeris koreana Golovatch, 1978 , described from near Kannyn,

South Korea (Golovatch, 1978) judged from the ovoid, horizontally stretched,

central syncoxital lobe of telopods. But Hyleoglomeris dodongiensis sp. n. differs from H. koreana by the telopod syncoxital horns covered with tiny tubercles, coloration pattern of thoracic shield with pair of marbled black-brown oval lateral spots and the structure of male leg 17 with small and irregularly rounded outer coxal lobe.

Figures

Figs 1–2. Hyleoglomeris dodongiensis sp. n., male paratype. 1 – habitus, dorsal view; 2 –

Figs 3–6. Hyleoglomeris dodongiensis sp. n., male paratype. 3 – leg pair 17; 4 – leg 18; 5

Figs 7–8. Hyleoglomeris dodongiensis sp. n., male paratype. 7 – telopods; 8 – telopod