Desmoxytes rhinoparva Likhitrakarn, Golovatch & Panha, 2015, sp. n.
Creators: name: Likhitrakarn, Natdanai
name: Golovatch, Sergei I.
name: Panha, Somsak
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Paradoxosomatidae
Desmoxytes
Desmoxytes rhinoparva

description: Desmoxytes rhinoparva sp. n.
Figs 1 C, D, 5 & 6.
Holotype male (CUMZ), Laos, Houaphan Province, Viengxay District, Ban Thamnathan, ca 860 m a.s.l., 20º 27' 48.1"N, 104° 08' 43.4"E, 0 5.07.2014, leg. C. Sutcharit.
Paratypes. 1 male, 1 female (CUMZ), same locality, together with holotype. 1 male, 1 female (CUMZ), same District, Kuar Nam Nuar, ca 840 m a.s.l., 20º 27' 11.9"N, 104° 10' 38.6"E, 0 5.07.2014, leg. R. Srisonchai.
Name. To emphasize the evident, but smaller basal spine on paraterga, much as in D. rhinoceros sp. n.; an adjective.
Diagnosis. Paraterga antler-shaped, with an evident anterior spine at base and a small tooth near tip; midbody setation pattern on metaterga a posterior row of 2+2 insertion points; gonopod rather short and condensed; male prefemora 5 humped, male prefemora 6 inflated.
Description. Length 23.1–24.2 (male) or 26.5–29.5 mm (female), width of midbody pro- and metazonae 1.4–2.0 and 4.1–4.6 mm (male) or 2.2–2.8 and 4.0– 4.6 mm (female), respectively.
Live coloration dark brown (Fig. 1 C & D); a few basal podomeres brown to pale brown, antennae growing infuscate (black) distad; body segments 11–12 and legs contrasting pale brown to whitish; coloration of alcohol material after four months of preservation faded to brown or pale brown; venter and a few basal podomeres pale brown to whitish, legs growing infuscate (brown) distad (Fig. 5 A–K).
Clypeolabral region densely setose, vertex sparsely setose, epicranial suture distinct. Antennae very long (Fig. 1 C & D), either reaching body segment 6 (male) or extending behind body segment 5 (female) when stretched dorsally. In width, head <collum <segment 2 <3 <4 <5 <6–16 (both sexes); thereafter body gently and gradually tapering. Collum with two transverse rows of setigerous spines: 3+3 anterior and 1+1 posterior, anterior spines being much larger than posterior ones; paraterga antler-shaped, directed dorsolaterad, with three evident spines anteriorly (Fig. 5 A & B). Tegument invariably dull, prozonae finely shagreened, metazonae rather coarsely microgranulate, surface below paraterga coarsely microgranulate, sterna delicately microgranulate (Fig. 5 A–D & F–K). Metaterga with a posterior row of 2+2 setae traceable only as insertion points. Axial line not visible (both sexes). Paraterga extremely well developed, antler-shaped (Figs 1 C, D, 5A–D, F & G), upturned, directed dorsolaterad, tip bent posteriad, with an evident anterior spine at base and a small tooth at about 3/4 extent of paraterga (Fig. 5 A–D, F & G), paraterga 8, 9, 11, 12, 14 and 15–18 each with a small, additional, subapical spine. Ozopores (Op) lateral, located distal to notch at base of basal spine (Fig. 5 D). Transverse sulcus usually visible in metaterga 5–17 (Fig. 5 A, C & F), wide, line-shaped, rather deep, reaching bases of paraterga (both sexes). Stricture between pro- and metazonae wide, line-shaped, very shallow, ribbed at bottom down to base of paraterga (Fig. 5 A–D, F & G). Pleurosternal carinae complete crests with a sharp caudal tooth only in segments 2 and 3 (Fig. 5 B, D & G), with only an anterior crest in segment 4, absent thereafter. Epiproct conical (Fig. 5 F, G & H), flattened dorsoventrally, apical papillae small, but evident; tip subtruncate; pre-apical papillae small setigerous knobs lying close to tip. Hypoproct subtrapeziform, evident setigerous knobs at a slightly convex caudal margin rather large and well-separated.
Sterna sparsely setose, without modifications; cross-impressions shallow; a large, rounded, sparsely setose, sternal lobe between male coxae 4 (Fig. 5 I & J). Legs long and slender, slightly incrassate in male, midbody ones ca 1.7–1.8 (male) or 1.5–1.6 times (female) as long as body height. male сoxae 2 rather clearly elongated distoventrally (Fig. 5 K). Male prefemora 5 with a very strong, claw-shaped, distovental, densely pilose apophysis in distal half, male prefemora 6 strongly inflated medially, with a small, but evident spine in distal half (Fig. 5 B & E). Male tarsal brushes absent.
Gonopods (Fig. 6) subfalcate, distal part directed mesally. Coxite moderately long, a little curved caudad, rather densely setose distodorsally. Prefemur densely setose, about 1/3 as long as telopodite. Femorite stout, strongly curved dorsad, slightly enlarged distad, seminal groove running entirely on mesal face. Postfemoral part rather short and condensed; solenomere short, flagelliform, sheathed by rounded solenophore (= lamina lateralis) carrying two apical lobes.
Remark. The coloration of this species is quite remarkable, being contrasting pale brownish in segments 9–11 and present in both sexes.
description: Published as part of Likhitrakarn, Natdanai, Golovatch, Sergei I. & Panha, Somsak, 2015, Two new species of dragon millipedes, genus Desmoxytes Chamnerlin, 1923, from Laos (Diplopoda: Polydesmida: Paradoxosomatidae), with redescriptions of all four species of Attems from Vietnam, pp. 483-504 in Zootaxa 3931 (4) on pages 489-493, DOI: 10.11646/zootaxa.3931.4.2, http://zenodo.org/record/234300