Review of the Spirobolida on Madagascar, with descriptions of twelve new genera, including three genera of ' fire millipedes' (Diplopoda) Author Wesener, Thomas urn:lsid:zoobank.org:author: Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, U. S. A. & Zoologisches Forschungsmuseum Alexander Koenig, Museumsmeile Bonn, Adenauerallee 160, D- 53113 Bonn, Germany. & B 54 D 3623309 Author Enghoff, Henrik urn:lsid:zoobank.org:author: Natural History Museum of Denmark, Universitetsparken 15, DK- 2100 Copenhagen, Denmark Author Sierwald, Petra urn:lsid:zoobank.org:author: Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, U. S. A. text ZooKeys 2009 2009-09-04 19 19 1 128 journal article 10.3897/zookeys.19.221 e6ea8eea-7156-4785-8313-f4bd88dadad1 1313–2970 576503 C473F9F6-1AE7-4B3F-B17F-CA1C2709010C Key to the Riotintobolus species: 1 Tarsal pads absent ( Fig. 27F ). Eyes with 20 or less ocelli ( Figs 26A , 27E ). Anal valves with a deep groove between anterior half and sharp-edged lips ( Figs 26B , 27G ) ......................................................................................... 2 – At least male legs 3–7 with tarsal pads ( Fig. 29C ). Eyes with more than 25 ocelli. Anal valves with neither a groove, nor sharp-edged lips ( Figs 28A , 29A ) .......................................................................................................... 3 2 Specimens 35–43 mm long. Colour laterally black, dorsally with a thick, light brown stripe ( Fig. 24A ). Telopodite of posterior gonopod laterally with one large and second small finger-shaped process ( Fig. 26M )........ R. mandenensis sp. n. – Specimens shorter than 25 mm . Colour laterally black, dorsally with a thick, red stripe ( Fig. 27A ). Telopodite of posterior gonopod laterally with two large finger-shaped processes of equal size ( Fig. 27K )................. R. minutus sp. n. 3 Telson with an elongated, protruding preanal process, lips on anal valves well-developed ( Fig. 28A ). Only male legs 3–7 with tarsal pads. Apical mem- brane on posterior gonopod weakly developed ( Fig. 28G ). Telopodite at mesal margin with a suspicious horn ( Fig. 28F ). Colour brown-blackish with a conspicuously wide light brown stripe.................................. R. aridus sp. n. – Telson preanal process not protruding, lips on anal valves weakly developed ( Fig. 29A ). Male legs three and beyond with tarsal pads ( Fig. 29C ). Apical membrane on posterior gonopod large, widely protruding ( Fig. 29F ). Colour light grey, posterior margin of rings dark grey, dorsally with a conspicuous, wide blood-red stripe ..................................................... R. anomalus sp. n.