Spirostreptidae, Brandt, 1833

Vohland, Katrin & Hamer, Michelle, 2013, A review of the millipedes (Diplopoda) of Namibia, with identification keys and descriptions of two new genera and five new species, African Invertebrates 54 (1), pp. 251-251 : 270

Key to the species of Spirostreptidae occurring in Namibia

1 Large species, 100–300 mm in length; collum with anterior corner strongly projecting; gonopod telocoxite without lateral conus ( Fig. 47) ........................................2

– Medium-sized species, <100 mm in length; anterior corner of collum not or only slightly projecting; gonopod telocoxite with lateral conus on median lamella ( Figs 45, 50, lc).................................................................................................................4

2 Very large species, up to 300 mm in length, antennae reaching beyond 4 th segment; gonopod telocoxite lacking sclerotised spines, telopodite slender and trifid at apex ( Figs 52, 56) ............................................................................................................3

– Large species, about 175 mm in length, antennae reaching distal edge of collum; gonopod telocoxite with sclerotised spines on each distal corner; telopodite apically forked ( Fig. 48) ......................................... Doratogonus rugifrons (Attems, 1928)

3 Lateral lamella of gonopod telocoxite broadly rounded apically, without any distinct projections ( Fig. 53, ll), femoral process of telopodite ( Figs 52, 53, fp) straight to slightly curved...................................................... Spirostreptus heros Porat, 1872

– Lateral lamella of gonopod telocoxite apically projected and with triangular median lobe ( Fig. 56, ll), femoral process of telopodite strongly curved ( Fig. 56, fp).......... ................................................ Namibostreptus kymathorhabdus (Attems, 1914)

4 Metazonite broader than prozonite, posterior border of metazonites strongly striated ( Fig. 60)............................... Synophryostreptus rugosostriatus (Schubart, 1966)

– Metazonite and prozonite subequal, posterior border of metazonotites smooth or slightly undulated ( Fig. 43), animal only striated to a maximum height of ozopores ........................................................................................................................5

5 Pads on legs present and distinct; lateral conus of telocoxite short ( Fig. 50, lc), solenomere with femoral process ( Fig. 50, fp) ....... Kartinikus australis Attems, 1914

– Pads on legs very small or absent; lateral conus of telocoxite long, solenomere with tarsal process ( Fig. 46, tp) ( Brevitibius ) ..................................................................6

6 55–57 segments, collum with 3 folds ( Fig. 43); median lamella of telocoxite longer than lateral lamella ( Figs 38, 39).......................................... B. oongongololo sp. n.

– 60 segments, collum with 1 fold; median lamella of telocoxite shorter than lateral lamella ( Fig. 45) .......................................................................... B. ondundu sp. n.