B. gokwensis sp. n. Mwabvu

Fig. 4

Type material (examined): Holotype: ZIMBABWE: 1 ɗ, Gokwe, Kuwirirana Centre [18°02'S, 28°08'E], 18.ii.1998, T. Mwabvu (MRAC 20556).

Etymology: So named to highlight type locality, Gokwe, Zimbabwe.

Additional material examined: 1 ɗ, Gokwe, Kuwirirana Centre [18°02'S, 28°08'E], 18.ii.1998, T. Mwabvu (NMZ uncatalogued).

Diagnosis: Antennae yellow. Laterally, apical telocoxite folded inwards into an ear-shaped lobe just above the knee. Inner margin of apical telocoxite with a short median process and a rounded proximal median lobe that are separated by a U-shaped groove (Figs. 4 a, 4b).

Description:

Size: Body length 95–132 mm, minimum and maximum body width 5–7 mm and 8–9 mm; antenna length 6–7 mm.

Number of body rings: 54–55.

Colour: Body black, legs reddish-brown; antennae yellow.

Collum: Rounded, with two complete folds (Fig. 4 d).

Pre-femoral process of 1st pair of male legs: Spade-shaped distally (Fig. 4 c).

Sigilla on body ring: Three rows present, merging to a single ventral row.

Gonopod: 4–6 mm long. Apical telocoxite with two median processes separated by a deep U-shaped groove. Orally, lateral leaf folded just above the knee bend and extending distally to the apex of telocoxite (Fig. 4 a).

Aborally an extension from the proximal lobe forms a median process, which may touch but not overlap the opposite process (Figs. 4 a, 4b).

Aborally, a large basally rounded-bulb shaped lobe on lateral leaf extends below level of median leaf apex. Distally telopodite forms a complete loop (Fig. 4 a).

Distribution: Known only from type locality, Gokwe, Zimbabwe (Fig. 10).

Abbreviations: at, apical telocoxite; cf, collum fold; llb, lateral leaf lobe mp, median process; odtp, overlapping distal telopodite; pfl, prefemoral lobe; st, sternite; tp, telopodite.

Remarks: This is the only species of Bicoxidens with yellow antennae. Other species have antennae and legs of the same colour. As in brincki, matopoensis, nyathi, nigerrimus and friendi the gonopod lacks median axe-shaped processes on median leaf, but it has a raised basally rounded or bulb or flask-shaped lobe on the lateral leaf as in brincki, friendi, gokwensis, matopoensis, nigerrimus and nyathi (Figs. 1b, 3b, 5b, 6b, 7b, 8b).