Hemisphaeroparia bonakanda, Golovatch, S. I., Fiemapong, A. R. Nzoko, Tamesse, J. L., Mauries, J. - P. & VandenSpiegel, D., 2018

Golovatch, S. I., Fiemapong, A. R. Nzoko, Tamesse, J. L., Mauries, J. - P. & VandenSpiegel, D., 2018, Trichopolydesmidae from Cameroon, 1: The genus Hemisphaeroparia Schubart, 1955. With a genus-level reclassification of Afrotropical genera of the family (Diplopoda, Polydesmida), ZooKeys 785, pp. 49-98 : 73-75

Hemisphaeroparia bonakanda sp. n. Figs 17, 18, 29B

Type material.

Holotype ♂ (MRAC 22761) Cameroon, South West Region, Bonakanda, VHF trade, Mt Cameroon National Park, savannah, near edge of mountain forest, 04°13 ’53’’ N, 009°15 ’19’’ E, by hand, 19.X.2014, leg. K. Maes.

1 ♂ (lost), same locality, together with holotype.

Diagnosis.

Differs from other species of the genus by the presence of a boletiform epicranial tubercle (♂), coupled with relatively long tergal setae, line-shaped and microgranulate pleurosternal carinae, as well as deeply sunken gonopodal telopodites, each of which shows a single, moderately exposed, main branch (ab) and a rather short, subtransverse, laterally directed solenomere (sl), with a sharp tooth at its base (Figure 18).

Name.

To emphasize the type locality; noun in apposition.

Description.

Length of holotype ca. 7 mm (♂), width of midbody pro- and metazonae 0.55 and 0.8 mm (♂), respectively. Coloration light marbled grey-brown; head, antennae, legs, and venter light yellow-brown (Figure 29B).

All other characters as in H. zamakoe sp. n., except as follows.

Antennae long and strongly clavate, reaching behind to segment 3 when stretched dorsally (♂). In width, collum <3 <2 = 4 <5-17; thereafter body gradually tapering towards telson. Tergal setae longer, each mostly ca. 1/4 as long as metatergum, bacilliform and ribbed (Figure 17). Caudal corner of paraterga always rounded, drawn in creasingly back, but reaching beyond rear tergal margin only on segments 16-18 (Figs 17 A–C, G). Limbus much more sparsely microspiculate (Figure 17J). Pleurosternal carinae visible on all segments as a thin granulated line (Figs 17B, C).

Legs rather long and slender, ca. 1.3-1.4 times as long as midbody height; in length, tarsus> femur> prefemur> coxa = postfemur = tibia.

Gonopodal telopodites (Figure 18) almost fully concealed inside a large gonocoel, with only one unequally bifid branch (ab) moderately strongly exposed beyond coxa. Seminal groove short, moving onto a short, subspiniform solenomere (sl), the latter subtransverse and directed laterally, with a short tooth (t) at base.