Zehntnerobolus rubripes (De Saussure & Zehntner 1902)

Description. Measurements: males with 38 or 39 rings, circa 32 mm long, 2.9 mm wide. Females with 39 or 40 rings, 36–37 mm long, 3.7 mm wide.
Coloration decolorized in alcohol. Head, antennae and legs red (according to drawing and original description). Body ventrally and dorsally on meso- and metazonites pitchblack. Mesozonites dorsolaterally blood-red (see de Saussure and Zehntner 1897: plate XI, Fig. 48).
Head: each eye with circa 26–28 ocelli arranged in 6 or 7 vertical rows. Labrum with standard three irregular teeth and a single row of 10–12 stout marginal setae. Clypeus with two setiferous foveolae on each side. Antennal cavity absent. Antennae of medium length, protruding back to ring 4 in females, ring 5 in males. Relative lengths of antenno meres: 1<<2=3=4=5=6. Terminal antennomere with four large sen- sory cones located together inside a membranous area. Antenno mere 5 latero-apically with five rows, antennomere 6 with four rows of sensilla basiconica.
Gnathochilarium: of usual spirobolidan shape. Lamellae linguales each with two standard setae located behind one another. Stipites each with three apical setae. Basal parts could not be studied because a dissection was not attempted. Mandible not dissected.
Collum: smooth, laterally not protruding as far as ring 2.
Body rings: mostly smooth, with some transverse impressions on mesozona. Ozopores starting at ring 6, located closely in front of, but not touching suture between mesozona and metazona.
Telson: anal valves with neither lips, nor micropunctation. Preanal process sharp, but not protruding above anal valves (Fig. 22A).
Legs: coxae 1 and 2 elongated and fused with sternum, podomeres from prefemur to tarsus in both sexes each with 4–10 ventral/mesal setae. Length of midbody legs circa 0.8 times body diameter in females (Fig. 22B), circa 1.0 times body diameter in males (Fig. 22C). Each podomere ventrally with an apical seta. Coxae 3 and beyond of cylindrical shape. Tarsus with a stout dorso-apical seta and three pairs of regular ventral spines.
Male sexual characters: tarsal pads absent (Fig. 22C). Coxae 3–5 each with a large conical coxal process, protruding posteriorly to coxa 6.
Anterior gonopod sternite elongated into a wide, rounded lobe, apically with three very short, well-rounded tips (Fig. 22D). Mesal process of coxite absent. Telopodite on posterior side basally with a circular groove (Fig. 22E). Telopodite process slender and short, curved laterally (Fig. 23E). Lateral margin elevated (Fig. 22E).
Posterior gonopods unique (Figs 22F, G). Gonopod pair connected by a sclerotized and visible sternite. Telopodites positioned parallel to one another, sperm canal discharging laterally (Fig. 23G). Coxite and telopodite separated by a suture; coxite with a single groove. Telopodite with torsion, tip of telopodite curved laterally, with a sharp-edged tip (Fig. 22F). Sperm canal laterally strongly projecting over telopodite margin (Fig. 22G). Basally of projection of sperm canal with a row of sclerotized nodules (Fig. 22G). Sperm canal running through coxite at mesal, through telopodite at lateral margin (Fig. 22G).
Female sexual characters: vulva simple, bivalve-like.

Material examined: 2 ♂, 2 ♀ Lectotype: designated herewith to fix the concept of Zehntnerobolus rubripes (de Saussure et Zehntner, 1897) and to ensure the univer- sal and consistent interpretation of the same: ♂ (dissected, 30 mm long), MNHN HB049. Madagascar, Province Toamasina, Forêt de Moramanga, rainforest, 18°56’20” S, 48°13’40” E, leg. Musée de Genève, det. de Saussure, 1903. Paratypes: 1 ♂, 2 ♀, MNHN HB049, same data as lectotype.