Hemisphaeroparia digitifer, 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 : 68-69

Hemisphaeroparia digitifer sp. n. Figs 11, 12, 28E

Type material.

Holotype ♂ (MRAC 22751), Cameroon, Littoral Region, Nkam Division, Koukoe, forest, 04°08'N, 010°10'E, 28.IX.2017, leg. A.R. Nzoko Fiemapong and J.A. Yetchom Fonjo.

Paratypes: 1 ♂ (SEM, MRAC 22752), 2 ♂♂ (with one gonopod retained in situ)(MRAC 22753), same locality, 28.IX.2017, leg. A.R. Nzoko Fiemapong and J.A. Yetchom Fonjo.

Diagnosis.

Differs from all other species of the genus by the presence of a boletiform epicranial tubercle (♂), coupled with the gonopodal telopodites that are deeply sunken inside a large gonocoel and show three main branches (ab, mb, bb), all exposed in their distal parts and followed by no lobe, but instead with a conspicuous, setose, fully concealed finger (d) basally in apical part; seminal groove relatively long and straight, ending subapically on ab without any trace of a solenomere (Figure 12).

Name.

To emphasize the presence of a conspicuous, setose, fully concealed finger (d) on the gonopodal telopodite; noun in apposition.

Description.

Length of holotype ca. 4 mm (♂), width of midbody pro- and metazonae 0.3 and 0.45 mm (♂), respectively. Length of paratypes ca. 5 mm, width of midbody pro- and metazonae 0.45-0.6. Coloration in alcohol light yellow (Figure 28E).

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

Body with 20 segments. Antennae long and strongly clavate, reaching back to segment 3 when stretched dorsally (♂). Tergal setae mainly short, each often ca. 1/6-1/7 as long as metatergum, bacilliform, or subclavate (Figure 11 A–F, L). A faint transverse sulcus often traceable between rows 1 and 2 of setae on some metaterga. Segment 2 with a prominent and apically complex spiracle on each side (Figure 11K).

Legs rather long and slender, ca. 1.2-1.3 times as long as midbody height (♂).

Gonopods (Figure 12) with a deep gonocoel and complex, only little-exposed telopodites, the latter complex, showing subequally high ab and mb branches, the longest and most curved branch being bb. Apical part of telopodite with a conspicuous, long, and abundantly setose finger (d). Seminal groove long and straight, ending subapically on ab without any trace of a solenomere.