Colossobolus pseudoaculeatus Wesener,

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: 37-38

publication ID 10.3897/zookeys.19.221

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Colossobolus pseudoaculeatus Wesener

sp. n.

Colossobolus pseudoaculeatus Wesener  , sp. n.

Material examined: 1 ♂ Holotype: 1 ♂ (119 mm long), ZSM FGZC 1847View Materials, Madagascar, Province Antsiranana, Forêt d’Ambre, Provate Reserve Le Fontenay , leg. Köhler and Franzen, 26.II.2008. 

Differential diagnosis: the anterior and posterior gonopods of C. pseudoaculeatus  sp. n. can only be confused with those of C. aculeatus  . See the latter for a list of the characters distinguishing these two species.

Description. Measurements: male with 49 body rings, circa 119 mm long, 9.55 mm wide. Female unknown.

Coloration affected by alcohol. Head, antennae, legs and telson red ( Figs 21A, BView Figure 21). Median part of collum dark, margins red ( Fig. 21AView Figure 21). Body rings anteriorly dark brown, posteriorly wine-red. Antennae protruding back to ring 4. Male coxal processes present on coxae 3 and 4, on coxae 5–7 absent. Preanal process well-rounded, not projecting over anal valves ( Fig. 21BView Figure 21).

Anterior gonopod sternite elongated into a wide, broadly rounded lobe ( Fig. 21DView Figure 21). Mesal process of coxite weakly developed, protruding into a very short wide lobe with a well-rounded tip; lobe only slightly longer than sternite ( Fig. 21DView Figure 21). Telopodite process long and well-rounded, apically thicker than basally. Mesal margin laterally sharp, not projecting ( Fig. 21CView Figure 21).

Posterior gonopods telopodites positioned parallel to one another, generally Ushaped ( Figs 21E, FView Figure 21). Coxite branch absent ( Fig. 21EView Figure 21), lateral branch basally slender, width apically increasing ( Figs 21E, FView Figure 21); tip swollen, slightly curved mesally ( Fig. 21EView Figure 21). Central membranous area present as a wide, well-rounded knob ( Fig. 21EView Figure 21). Main branch slightly shorter than lateral branch, latero-apically towards lateral branch with a large membranous area ( Figs 21E, FView Figure 21).

Distribution and ecology: C. pseudoaculeatus  is only known from the Forêt d’Ambre ( Fig. 10View Figure 10).

Etymology: pseudoaculeatus  , adjective, refers to the close similarity of the species to Colossobolus aculeatus  .


Bavarian State Collection of Zoology