Fig. 4 in A mountain of millipedes VI. New records, new species, a new genus and a general discussion of Odontopygidae from the Udzungwa Mts, Tanzania (Diplopoda, Spirostreptida, Odontopygidae)

Fig. 4. Helicochetus spp., ♂♂, from Udzungwa Mts. A–B. H. dimidiatus (Peters, 1855). C–F. H. mutaba Kraus, 1960. A, C, E. Limbus; in E the limbus proper is damaged (remains are seen to the left), so the round-lobed "sublimbus" becomes visible. B, D, F. Surface microsculpture of limbus. Scale bars: A, C, E = 0.01 mm; B, D, F = 0.002 mm.