Eviulisoma acaciae,

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: 22-24

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Eviulisoma acaciae

sp. nov.

Eviulisoma acaciae  sp. nov.

urn:lsid:zoobank.org:act: B 769088A-0401-43BD-82 F 9-09537DA86 B 49

Figs 6CView Fig. 6, 10View Fig. 10


Differs from other species of the E. kwabuniense  group by the combination of a map ending in two equal, parallel prongs, a spinose iap and a two-lobed solenophore with a dorsal lobe reaching tip of acropodital processes.


This species is named after the dominant tree at the type locality.

Material studied (total: 5 ♂♂)


TANZANIA: ♂, Iringa Region, Iringa District, West Kilombero Scarp FR, 07°45′34.2″ S, 36°26′37.4″ E, (open) woodland, 1510 m a.s.l., Plot Acacia  , 5 Dec. 2000, Frontier Tanzania leg. ( ZMUC)GoogleMaps  .


TANZANIA: 4 ♂♂, same collection data as for holotype, except 7 Dec. 2000 (ZMUC). 

Description (male)

SIZE. Length unmeasurable, all specimens broken, max. width 2.0 mm.

COLOUR. After 17 years in alcohol whitish to pale yellowish, dorsal half of metazonites very faintly light brown in some specimens.

ANTENNAE. Reaching back to end of ring 3.

BODY RINGS. Paranota represented by very faintly developed keels on body ring 2 (as in Fig. 4 CView Fig. 4), otherwise completely absent. Stricture between pro- and metazonite not striolate. A transverse row of setae on all body rings, but many setae abraded.

HYPOPROCT. Trapezoid, almost rectangular, with three strong marginal tubercles.

LEGS. Length 1.1× body width. Relative lengths of podomeres: femur> prefemur> tarsus> tibia> postfemur. Scopulae on femur, postfemur, tibia and tarsus, diminishing towards posterior and present on tibia and tarsus only on posteriormost legs.

STERNUM 5. A tongue-shaped process between legs 4.

STERNUM 6 ( Fig. 6 CView Fig. 6). Deeply excavated. Rim of excavation simple.

GONOPODS ( Fig. 10View Fig. 10). Coxal lobe (cxl) large. Prefemoral part (prf) ca ⅓ as long as acropodite. Mesal acropodital process (map) a rather stout rod, apically expanded and ending in two equal, stout, pointed tines. Intermediate acropodital process (iap) a slender straight rod, as long as map, densely covered in spines on mesal and ventral surfaces, except basally and apically. Solenophore (sph) large, deeply divided into two broad lobes, dorsal lobe (sph-d) as long as map, apically with a few minute teeth, ventral lobe (sph-v) much shorter, broadly rounded, curved around solenomere (slm).

Distribution and habitat

Known only from West Kilombero Scarp FR, (open) woodland, 1510 m a.s.l. As implied by the plot name on the label (“Plot Acacia  ”) the vegetation is open Acacia  woodland (cf. Doody et al. 2001: 27, 174). Collected together with E. grumslinglak  sp. nov.


Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet


Field Museum of Natural History, Botany Department


Royal Botanic Garden Edinburgh


Senckenberg Forschungsinstitut und Naturmuseum


Zoological Museum, University of Copenhagen


University of Copenhagen