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Hemisphaeroparia zamakoe, 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 : 59-61

publication ID

 https://dx.doi.org/10.3897/zookeys.785.27422

publication LSID

 lsid:zoobank.org:pub:03935A66-FA34-4DEB-BEEA-00EC88094062

persistent identifier

https://treatment.plazi.org/id/1D9169D7-FF64-46F0-92BC-D69AED8802CF

taxon LSID

 lsid:zoobank.org:act:1D9169D7-FF64-46F0-92BC-D69AED8802CF

treatment provided by

ZooKeys by Pensoft

scientific name

 Hemisphaeroparia zamakoe
status

sp. n.

Hemisphaeroparia zamakoe sp. n. Figs 3, 4, 28A

Type material.

Holotype ♂ (MRAC 22735), Cameroon, Center Region, Zamakoe Forest, 03°33'N, 011°31'E, 815 m a.s.l., forest, 20.IX.2014, leg. A.R. Nzoko Fiemapong and C. Oumarou Ngoute.

Paratypes.

6 ♂♂ (MRAC 22736), 1 ♂ (SEM, MRAC 22737), same locality, 18.IV.2015; 1 ♂ (without gonopods, either lost or mounted on slide) (MRAC 22738), 1 ♂ (ZMUM), same locality, 19.IV.2014; 1 ♂ (ARNF), same locality, 21.III.2015, all leg. A.R. Nzoko Fiemapong and C. Oumarou Ngoute.

Diagnosis.

Differs from all other species of the genus by the presence of a boletiform epicranial tubercle (♂), coupled with unusually densely setose gonopodal telopodites which are deeply sunken inside a large gonocoel and show only two, slender, contiguous, little-exposed branches (ab, bb), both followed by a small, round, fully concealed lobe (lo) more basally (Figure 4).

Name.

To emphasize the type locality; noun in apposition.

Description.

Length of holotype ca. 5 mm (♂), width of midbody pro- and metazonae 0.4 and 0.6 mm (♂), respectively. Length of paratypes 5-7 mm, width of midbody pro- and metazonae 0.4-0.5 and 0.6-0.7 mm (♂), respectively. Coloration in alcohol uniformly pallid (Figure 28A).

Body with 20 segments. Tegument very delicately micro-alveolate, mainly slightly shining. Head very densely micropilose, with a very distinct, mushroom-like, frontal tubercle (♂) (Figure 3D, G, K). Interantennal isthmus almost two times as large as diameter of antennal socket. Antennae long and strongly clavate, reaching back to segment 2 or 3 when stretched dorsally (♂). In length, antennomere 3 = 6> 2 = 5> 1 = 4 =7; antennomere 6 the largest, antennomeres 5 and 4 each with a distinct, round, distodorsal field of sensilla. In width, collum <head <segments 2-4 <5-16; thereafter body gradually tapering towards telson. Collum ellipsoid, transversely oval, like all following metaterga with three transverse, regular rows of setae. Tergal setae medium-sized, each ca. 1/5 as long as metatergum, bacilliform and longitudinally ribbed (Figure 3A-C, G-J, L, M), always 3+3 in each row on postcollum metaterga. An extremely faint transverse sulcus visible behind first row on some metaterga. Dorsum invariably regularly convex. Paraterga medium-sized, set at around upper 1/3 of metazonae (Figure 3A-C, L), visible starting with collum, often slightly upturned caudally, faintly, but regularly rounded and bordered, lateral incisions absent. Caudal corner of paraterga always rounded, drawn increasingly back, but reaching beyond rear tergal margin only on segments 17 and 18 (Figure 3I). Pore formula normal, only slightly abbreviated: 5, 7, 9, 10, 12, 13, 15-18. Ozopores small, round, opening flush dorsally near caudal corner of poriferous paraterga. Stricture between pro- and metazonae wide, shallow. Limbus very finely microspiculate. Segment 2 with an unusually prominent, tuberculiform and apically complex spiracle on each side. Pleurosternal carinae traceable as very faint lines on most segments (Figure 3 A–C). Epiproct short, conical, flattened dorsoventrally. Hypoproct semi-circular, setae strongly separated and borne on minute knobs.

Sterna wide, unmodified, setose. Legs rather long and slender, ca. 1.1-1.2 times as long as midbody height; in length, tarsus> femur> coxa = prefemur = postfemur = tibia, the latter with a particularly long, tactile seta apicodorsally. Tarsal brushes present (♂).

Gonopods (Figure 4) with large, subglobose, clearly exposed, alveolate coxae, these rather densely setose nearly throughout, fused medially at base, each carrying two very long setae near place of fusion. Telopodites almost fully concealed inside a very large gonocoel, each very densely setose, with only two branches (ab, bb), both contiguous and only slightly exposed beyond coxa, followed by a small round lobe (lo) more basally. Seminal groove short, moving onto a long, subspiniform solenomere (sl), in mesal view the latter subtransverse and directed apicolaterad.

Specimens