FIGURE 5 in Carinobolus gen. nov. and Costabolus gen. nov., two new, remarkably crested monospecific genera of spirobolidan millipedes from WestAfrica, with the proposal of a new tribe, Amblybolini tribus nova (Diplopoda, Spirobolida, Pachybolidae)

FIGURE 5. Costabolus baculus sp. nov., male paratype (VNHM 198). A & B. Head, lateral and frontal views, respectively. C. Tip of antenna. D. Left antenna, lateral view. E. Clypeus, frontolateral view. F & G. Mandible, ventral and mesal views, respectively. H. Gnathochilarium, ventral view. I. Right lateral margin of collum, lateral view. J. A midbody metazona. K. Ozopore. L. Limbus of a midbody ring. M. Posterior part of body, ventral view. N & O. Midbody legs, ventral and lateral views, respectively. P. Tarsus of a midbody leg, lateral view. Abbreviations: et, external tooth; it, internal teeth; lt, lateral tooth; mp, molar plate oz, ozopore; pa, tarsal pad; pl, pectinate lamella. Scale bars: 500 µm (A, B), 100 µm (D, E, F, G), 50 µm (C, P), 200 µm (L, H, J, K, N, O), 10 µm (L).