Eviulisoma kakamega, VandenSpiegel, Didier & Golovatch, Sergei I., 2014

VandenSpiegel, Didier & Golovatch, Sergei I., 2014, The millipede genus Eviulisoma Silvestri, 1910 in Kenya, with descriptions of new species (Diplopoda, Polydesmida, Paradoxosomatidae), ZooKeys 459, pp. 11-34 : 20-21

Taxon classification Animalia Polydesmida Paradoxosomatidae

Eviulisoma kakamega sp. n. Figs 8, 9, Map 1

Type material.

Holotype ♂ (incomplete, only head and first 13 segments present) (MRAC 20771), Kenya, Likhanda Hills, Kakamega Forest, S00°13', E34°54', pitfall traps, 5.II.2002, leg. D. S. Smith.

Paratypes: 1 ♂ (incomplete, lacking gonopods and five posteriormost segments), 4 ♀, 5 juv., 1 fragment (MRAC 20772), same data, together with holotype.

Name.

To emphasize the type locality, a noun in apposition.

Diagnosis.

Differs from congeners by the gonopod solenophore (sph) being complex, cup-shaped, lamellar, about as long as a flagelliform solenomere (sl), flanked medially by a long, subspiniform, postfemoral process (p) (Figs 8C, 9 C–E). See also Key below.

Description.

Length of ♀ ca 22-23 mm, width of midbody metazonae 2.1 (♂ holotype), 2.7 (♂ paratype) or 3.1-3.3 mm. Coloration uniformly light pinkish yellow, legs lighter yellow.

Other adult characters as in Eviulisoma ngaia sp. n., except as follows.

Vertigial region with a few setae (Figs 8A, 9A). Stricture between pro- and metazonae very delicately striolate. Tegument generally smooth, often with only a few arcuate striae near and below ozopores. Pleurosternal carinae rather evident, arcuate ridges devoid of a caudal tooth, visible at least until segment 15 (♂, ♀). Epiproct long (Fig. 8B), faintly concave between two small apical papillae, subapical lateral papillae evident, only slightly removed from tip (♀). Hypoproct semi-circular, regularly and broadly rounded, 1+1 submarginal setae borne on minute knobs and a little removed from margin.

Setose lobe between ♂ coxae 4 (Figs 8C, 9C) low, broad, clearly concave apically. Sternite between ♂ coxae 5 slightly elevated due to small caudolateral cones (Fig. 9C); sterna between ♂ coxae 6 and 7 unusually deeply excavate and ledge-shaped for accommodation of gonopod tips, the excavation’s frontal edge being densely setose (Figs 8C, 9C). Postgonopodial sterna with small, but evident, often sharp cones near each coxa, anterior pair being smaller than caudal one on each diplosegment. ♂ tarsi considerably longer than tibiae. Legs 1.4-1.5 (♂) or 1.1-1.2 (♀) times as long as body height. Dense ventral brushes on ♂ tibiae and tarsi present (Fig. 9B).

Gonopods (Figs 8C, 9 C–E) rather compact, highly complex due to an apically cup-shaped, lamellar solenophore (sph) about as long as a flagelliform solenomere (sl), flanked medially by a long, subspiniform postfemoral process (p).