Paradoxosomatidae, Daday, 1889

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 : 256-257

Key to species of Paradoxosomatidae occurring in Namibia

1 Sternite 5 of male lacking cones, but with four brushes ( Fig. 11); pregonopodial legs lacking femoral processes; tibiotarsus of gonopod divided into one short basal and two longer, slender appendages ( Fig. 8)..... Oxidus gracilis (C.L. Koch, 1847)

– Sternite 5 of male with cones ( Figs 6, 16); pregonopodial legs with femoral processes ( Fig. 26); tibiotarsus not as above ...........................................................................2

2 Gonopod acropodite coiled in a broad loop; solenomere with folded, laminate process ( Fig. 2).................................... Cnemodesmus riparius Shelley & Crawford, 1996

– Gonopod acropodite not coiled in a broad loop; solenomere lacking process ( Figs 12, 17, 23, 31) .........................................................................................................3

3 Gonopods with large femoral process; tibiotarsus divided ( Figs 12, 17) ( Podochresimus ) ......................................................................................................................4

– Gonopods with reduced femoral processes ( Fig. 23); tibiotarsus undivided ( Fig. 24) or shield-like ( Fig. 31).............................................................................................5

4 Very small species (width ~0.7 mm), femoral process divided into an acute and a laminate process ( Fig. 13), tibiotarsus with enlarged lobe ( Fig. 12)... P. latus sp. n.

– Small species (width ~2.0 mm), femoral process not divided, tibiotarsus divided into two slender processes ( Fig. 17)............................. P. unistolonis Attems, 1944

5 Small species (width ~1.2 mm); pleurotergal ridge structured ( Fig. 28). Gonopod tibiotarsus and solenomere parallel, with small process at base ( Fig. 23) ................ ................................................................... Praeterpediculus niger (Attems, 1928)

– Very small species (width ~0.9 mm); pleurotergal ridge smooth. Gonopod tibiotarsus enlarged, forming undulated lamina ( Fig. 31)........................................................... ............................................. Umbridesmus millequingentesimus (Attems, 1944)