Eviulisoma kangense, Enghoff, 2018
Enghoff, Henrik, 2018, A mountain of millipedes VII: The genus Eviulisoma Silvestri, 1910, in the Udzungwa Mountains, Tanzania, and related species from other Eastern Arc Mountains. With notes on Eoseviulisoma Brolemann, 1920, and Suohelisoma Hoffman, 1963 (Diplopoda, Polydesmida, Paradoxosomatidae), European Journal of Taxonomy 445, pp. 1-90 : 60-63
treatment provided by
Eviulisoma kangense sp. nov.
urn:lsid:zoobank.org:act:5BB2 A 851-08 A 1-439E-95 A 5-241DF9AA50DD
Differs from other species of the E. sternale group by having the solenophore almost as long as map. Differs from E. sternale sp. nov. by its larger size (width 3.2 mm vs 2.0 mm) and by having a slenderer map without an apical dentate ridge. Differs from E. zebra sp. nov. by having a flattened, almost hairless area on the ventral side of the prefemora and femora of the legs of a number of post-gonopodal body rings.
The name is an adjective referring to the type locality, the Kanga Mts.
Material studied (total: 12 ♂♂)
TANZANIA: ♂, Kanga Mts , Morogoro Region, Kanga FR, 400–500 m a.s.l., 22–25 Nov. 1984, lowland rainforest, N. Scharff leg. (ZMUC).
TANZANIA: 11 ♂♂, same collection data as for holotype (ZMUC).
Referred non-type material
TANZANIA: 4 ♀♀, 1 juv., same collection data as for holotype (ZMUC).
SIZE. Length 33 mm, max. width 3.2 mm.
COLOUR. Overall impression ringed. Head, collum, posterior ⅔ of metazonites, epiproct and paraprocts dark brown, rest of body and appendages pale yellowish.
ANTENNAE. Reaching back to middle of ring 4.
BODY RINGS. Paranota sometimes visible as a very faint line/ keel on ring 2 (as Fig. 4C View Fig. 4 ), otherwise completely absent. Stricture between pro- and metazonite striolate. A transverse row of setae on all rings, but many setae abraded.
HYPOPROCT. Rounded-trapezoid, without distinct tubercles.
LEGS. Length 1.5× body width. Relative lengths of podomeres: femur = tarsus> prefemur> tibia> postfemur. Tibiae and tarsi with dense scopulae ( Fig. 28B–C View Fig. 28 ); prefemora and femora of legs of rings 8–18 ventrally with a flattened, almost hairless area clearly demarcated against the normal surface ( Fig. 28E View Fig. 28 ).
STERNUM 5. A rounded-rectangular process, sometimes slightly bilobed, between legs 4.
STERNUM 6. Deeply excavated. Lateral rims of excavation produced into two lobes on each side, one lobe at basis of each leg ( Fig. 28 A View Fig. 28 ).
GONOPODS ( Fig. 29 View Fig. 29 ). Coxal lobe (cxl) prominent. Prefemoral part (prf) ca ⅓ as long as acropodite. Mesal acropodital process (map) long, slender, slightly curved, apically divided into three pointed tines (tn1, tn2, tn3); dorsal tine (tn1) shortest, separated from the two other tines by a V-shaped incision. Solenophore (sph) almost as long as map, a simple ʻrolled sheetʼ, ending in two small triangular processes.
Distribution and habitat
Known only from the Kanga Mts, Kanga FR, 400–500 m a.s.l. Habitat: lowland rainforest. The Kanga Mts belong to the Nguru massif, one of the smaller blocks of the Eastern Arc Mountains, situated some 150 km N of the Udzungwa Mts.
Although females have in general not been considered in this paper, it is worth noting that in this species, female legs are without dense setation on any podomere, and without modified prefemora and femora. See also Discussion.
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