Eviulisoma chitense, 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 : 30-32

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scientific name

Eviulisoma chitense

sp. nov.

Eviulisoma chitense sp. nov.

urn:lsid:zoobank.org:act:13931F2B-13C9-4987- A 3AA-B9F42BB5796D

Figs 6D View Fig. 6 , 14 View Fig. 14


Differs from other species of the E. kwabuniense group by the combination of a map with a short subapical laterad side branch, a partly spinose iap, and a clearly three-lobed solenophore that is much shorter than map and iap, dorsal lobe of solenophore much longer than the others.


The name is an adjective referring to the type locality.

Material studied (total: 5 ♂♂)


TANZANIA: ♂, Iringa Region, Udzungwa Scarp FR, above Chita Village , 1400 m a.s.l., 4–5 Nov. 1984, pitfall traps in montane rain forest, N. Scharff leg. ( ZMUC).


TANZANIA: 4 ♂♂, same locality as for holotype but 1050 m a.s.l., 26–29 Oct. 1984, pitfall traps in intermediate rain forest, N. Scharff leg. ( ZMUC).

Description (male)

SIZE. Length 20 mm, max. width 1.6–1.9 mm.

COLOUR. After 33 years in alcohol whitish to very light brown, a little darker dorsally.

ANTENNAE. Reaching back to middle of ring 4.

BODY RINGS. Paranota indicated by very faint ridges on body ring 2 (as Fig. 4C View Fig. 4 ), otherwise completely absent. Stricture between pro- and metazonite smooth. A transverse row of setae on all body rings.

HYPOPROCT. Trapezoid, almost rectangular with three large apical tubercles.

LEGS. Length 1.1× body width. Relative lengths of podomeres: femur> prefemur> tarsus> tibia> postfemur. Scopulae on femur, postfemur, tibia and tarsus until midbody, gradually disappearing on more posterior legs.

STERNUM 5. A small subrectangular lobe between legs 4 ( Fig. 6D View Fig. 6 ).

STERNUM 6. Deeply excavated. Rim of excavation simple.

GONOPODS ( Fig. 14 View Fig. 14 ). Coxal lobe (cxl) distally right-angled. Prefemoral part (prf) ca half as long as acropodite. Mesal acropodital process (map) a straight, smooth rod with a subapical curved side branch. Intermediate acropodital process (iap) a curved pointed rod, covered in long spines along mesal side. Solenophore (sph) much shorter than acropodital processes, curving around solenomere (slm), apically with three slender lobes /processes, dorsal lobe (sph-d) longer, intermediate process (sph-i) thinner than the others.

Distribution and habitat

Known only from the Udzungwa Scarp FR, above Chita Village. Altitudinal range 1050–1400 m a.s.l. Habitat: intermediate and montane rain forest. Collected together with E. cetafi sp. nov.


Zoological Museum, University of Copenhagen