Hylomus laos, Nguyen & Sierwald, 2019

Nguyen, Anh D. & Sierwald, Petra, 2019, On the paradoxosomatid collection in the Field Museum of Natural History: Dragon millipedes from Laos (Polydesmida: Paradoxosomatidae: Hylomus), Raffles Bulletin of Zoology 67, pp. 119-128 : 123

Hylomus laos , new species

( Figs. 5–8 )

Material examined. Holotype: male ( FMNH-INS 3716300 , 14.7 mm), LAOS, Champasak Prov., Bolaven Plateau, Ban Thongvay [=Xekatam], vic. old logging road, N of village, 1,095 m, 15°14.288′N – 106°31.891′E, selectively logged forest, FMHD#2008–037 , flight intercept trap, coll. A Newton & M. Thayer, ANMT site 1231, 8–16 June 2008 . Paratypes: 1 male, 1 female ( FMNH-INS 3716300 ) same data as for holotype .

Other material: two male fragments ( FMNH-INS 3716299 ), LAOS, Champasak Prov., Bolaven Plateau, Ban Thongvay [=Xekatam], vic. old logging road, N of village, 1,170 m, 15°14.494′N – 106°31.807′E, selectively logged forest, FMHD#2008–040 , flight intercept trap, coll. A Newton & M. Thayer, ANMT site 1232, 8–16 June 2008 .

Diagnosis. The species can be recognised by antler-shaped paraterga, midbody metaterga with two rows of 2+2 anterior spines and 3+3 posterior spines, male femora 5 and 6 with big tubercles ventrally, male sternite 5 with a large, sparsely setose trapeziform lamina between coxae 4, epiproct unmodified, gonopod lamina lateralis broadly rounded, partly folded to sheath distal part of solenomere.

Figures

Fig. 5. Hylomus laos, new species. Holotype. A, anterior part, dorsal view; B, lateral view; C, head, anterior view; D, body rings 8–10, dorsal view. Scale bar = 1 mm.

Fig. 6. Hylomus laos, new species. Holotype. A, posterior part, dorsal view; B, lateral view; C, ventral view; D, leg femora 6–7. Scale bar = 1mm.

Fig. 7. Hylomus laos, new species. Holotype. A, sternum 5, ventral view, light photo; B, uv photo; C, gonopod in situ, ventral view, light photo; D, uv photo. Scale bar = 1mm.

Fig. 8. Hylomus laos, new species. Holotype. A, right gonopod, lateral view; B, ventral view; C, mesal view; D, distal part of right gonopod, lateral view; E, mesal view. Scale bar = 200 µm. Abbrievations: tl = terminal lobe; sul = subterminal lobe; sp = serrated process; ll = lamima lateralis; lm = lamina medialis; sph = solenophore; sl = solenomere.