Glyphiulus obliteratoides, Golovatch & Geoffroy & Mauriès & Spiegel, 2007

Golovatch, Sergei I., Geoffroy, Jean-Jacques, Mauriès, Jean-Paul & Spiegel, Didier Van Den, 2007, Review of the millipede genus Glyphiulus Gervais, 1847, with descriptions of new species from Southeast Asia (Diplopoda, Spirostreptida, Cambalopsidae). Part 2: the javanicus-group, Zoosystema 29 (3), pp. 417-456 : 431-433

Glyphiulus obliteratoides n. sp. ( Figs 9-11 )

TYPE MATERIAL. — China. Ghizhou Prov. , Anshun County, Luangshuijing , Tian Xian Dong Cave (aquatic), 22.II.2004, leg. S. Prevorčnik & B. Sket, holotype ♂ ( MNHN GA 047 ) ; paratypes 1 ♂, 1 ♀, 4 juvs ( MNHN GA 047 ) ; 1 ♂, 1 ♀, 2 juvs ( ZMUM) ; 1 ♀ ( OBBFUL) ; 1 ♀ ( SEM) ; 1 subad. ♀ ( ZMUC). — Same cave , 23.II.2004, leg. B. Sket & S. Prevorčnik, 1 juv. ( OBBFUL) .

ETYMOLOGY. — To emphasize the very close resemblance to G. obliteratus n. sp.

DIAGNOSIS. — Differs from congeners by the pigmented ocelli and body, coupled with the more distinctly undulate collum, the undivided crests, etc. (see also key below).

DESCRIPTION

Holotype with 59p+1a+ T, about 32 mm long and 1.9 mm wide; adult paratypes (♂, ♀) with 45-60p+2- 1a+ T, length 22-35 mm, width 1.3-1.9 mm.

Coloration entirely pallid in young juvenile stadia, becoming marbled red-brown in adults, tergal crests dark castaneous brown; antennae, legs and venter light red-brown in adults. Adults with 7-9 blackish ocelli in a subtriangular eye patch.

Antennal sensilla, segment shape ( Fig. 10B ), tergal crests (including ozoporiferous ones) ( Figs 9 ; 10B ), epiproct ( Fig. 9E, F ), paraprocts ( Fig. 9E ), male legs 2 and 3 ( Fig. 11D, E ), penes ( Fig. 11D ), gonopods ( Fig. 11G, H ) generally as in G. obliteratus n. sp., but antennae ( Figs 9A ; 11A ) slightly shorter, gnathochilarium (mentum divided, n = 3) ( Fig. 11B ) more polytrichous; collum ( Fig. 9A, B ) with 1a-4a+ma+4a-1a undulations at caudal margin, undulation ma being shortest; hypoproct ( Fig. 10A ) very faintly emarginate caudomedially, conspicuous pleurosternal crests on segments 2-4 wanting ( Fig. 9A ); tergal crests similarly low and undivided, even adding another lateral crest below ozoporiferous one, which is barely traceable as a low anterior tubercle, but anterior end of all dorsal crests broadened ( Fig. 9 ); carinotaxy pattern thus 1/0+1+I/i+3+I/i+1+1/0 ( Figs 9C, D ; 10B ); a small accessory spine present at base of claw on legs 2 and 3 only ( Fig. 11D ), onward nearly missing ( Figs 10B ; 11F ); legs about as long as body diameter ( Fig. 10B ); male leg 1 with 5-segmented but shortened telopodites ( Fig. 11C ).

Head width = segment 2 = 6 <collum = 7(8)> segment 3 = 5 <7 <8 <9 <10 <11 = midbody segments; body gradually tapering toward telson. Postcollar constriction evident ( Fig. 9B ).

REMARKS

The samples contain five haplopodous juveniles with 30-33p+1-3a+T, each with the ozoporiferous tubercles fully developed only on segments 5 and 6. In general, even juveniles of later, diplopodous, stadia are easily recognised due to the ozoporiferous cones being especially well developed on segments 5 and 6 only.

In the absence of any troglomorphic traits, this species can only be considered troglophilic at most.

Figures

FIG. 9. — Glyphiulus obliteratoides n. sp., paratype ♀: A, anterior part of body,lateral view;B, same,dorsal view;C, midbody segments, lateral view; D, same, dorsal view; E, caudal body end, lateral view; F, same, dorsal view. Scale bars: A-E, 0.5 mm; F, 0.2 mm.

FIG. 10. — Glyphiulus obliteratoides n. sp., paratype ♀: A, telson, ventral view; B, midbody segment section; C, claw of midbody leg; D, claw. Scale bars: A, 0.2 mm; B, 0.5 mm; C, 0.05 mm; D, 0.02 mm.

FIG. 11. — Glyphiulus obliteratoides n. sp., paratype ♂: A, antenna; B, gnathochilarium; C, leg 1, frontal view; D, leg 2, caudal view; E, leg 3; F, leg 9; G, anterior gonopods, caudal view; H, right posterior gonopod, frontal view. Scale bar: A-F, 0.3 mm; G, H, 0.4 mm.