Spirobolida, Cook, 1895

Wesener, Thomas, Enghoff, Henrik & Sierwald, Petra, 2009, Review of the Spirobolida on Madagascar, with descriptions of twelve new genera, including three genera of ' fire millipedes' (Diplopoda), ZooKeys 19 (19), pp. 1-128 : 4

Key to the Malagasy families of Spirobolida

1 Posterior gonopods connected by a sclerotized sternite. Anterior gonopods without an apodeme, or only a small apodeme present; sternite never hyaline. Posterior gonopods usually complex. At least apical part of first basal joint of mandible visible ( Fig. 1A ) ............................................................................ ................................. suborder Trigoniulidea , single family Pachybolidae

– Posterior gonopods connected only by membranous folds, sternite absent. Anterior gonopods with a well-developed apodeme, sternite hyaline but large. Posterior gonopods of long, slender, simple shape ( Fig. 25O ). First basal joint of mandible covered by collum ( Fig. 27A ), second basal joint forming a cavity for the short antenna ( Fig. 25D ). Part of head overlapping basal joints of mandible ( Fig. 25D ) .......... suborder Spirobolidea , family Spirobolellidae On Madagascar only genus Hylekobolus , gen. n.

Figures

Figure 1. Corallobolus cruentus sp. n., A–C, E, F, male holotype, D female paratype. A head B telson C legs 1–7, ventral view D second leg pair with vulva, posterior view E anterior gonopods, posterior view F posterior gonopods, anterior view. av = anal valves; Co = collum; Cx = coxite; Gn = gnathochilarium; Md = basal joints of mandible; Pre = preanal ring; s = suture on clypeus; sub = subanal scale; St = sternite; T = telopodite; Tp = telopodite process; Vu = vulva. Not to same scale.

Figure 25. Distribution of the genus Riotintobolus gen. n.

Figure 27. Riotintobolus minutus sp. n., A–E female paratype(s), F–K male holotype. A two living specimens B habitus C gnathochilarium, overview; D midbody ring with leg pair E head, detail of incisura lateralis F legs 1–5, ventral view G telson H anterior gonopod, anterior view I left posterior gonopod, anterior view Į anterior gonopod, posterior view K left posterior gonopod, posterior view. av = anal valves; Co = collum; Cx = coxite; d-g = ozopores; Gr = groove; IL = incisura lateralis; L = ledge; Md = mandible; Pe = “penes”; Pre = preanal ring; St = sternite; T = telopodite; Te = telson. Scale bars = 1 mm.