Eviulisoma aequilobatum, 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 : 24-26

Eviulisoma aequilobatum sp. nov.

urn:lsid:zoobank.org:act:2CDA3FA8-41C9-4 A 3E-8349-344D4EB38358

Fig. 11

Diagnosis

Differs from other species of the E. kwabuniense group by having the solenophore almost as long as map and iap, which are both smooth, in combination with the equal length of the three apical lobes of the solenophore.

Etymology

The name is an adjective referring to the equally long apical lobes of the solenophore.

Material studied (total: 1 ♂)

Holotype TANZANIA: ♂, Iringa Region, Iringa District, New Dabaga/ Ulangambi FR , 08°04′05.6″ S, 35°54′20.41″ E, montane, 1930 m a.s.l., Plot 6, 29 Oct. 2000, Frontier Tanzania leg. ( ZMUC).

Description (male)

SIZE. Length not measurable, hind end of unique specimen missing; max. width 1.7 mm.

COLOUR. Completely pallid after 17 years in alcohol, possibly not due to fading, cf. remarks under E. ottokrausi sp. nov.

ANTENNAE. Reaching back to end of ring 4.

BODY RINGS. Paranota completely absent. Stricture between pro- and metazonite not striolate. A pair of dorsal setae on body ring 2, other rings apparently naked.

TELSON. Missing from specimen.

LEGS. Length 1.2× body width. Relative lengths of podomeres: femur> prefemur = tarsus> tibia> postfemur. Scopulae on femur, postfemur, tibia and tarsus, hardly diminished on body ring 11 (last ring present on specimen).

STERNUM 5. A trapezoid process between legs 4.

STERNUM 6. Deeply excavated. Rim or margin simple.

GONOPODS ( Fig. 11 ). Coxal lobe (cxl) large. Prefemoral part (prf) ca half as long as acropodite. Mesal acropodital process (map) long, slender, slightly arched, apically expanded, somewhat axe-shaped. Intermediate acropodital process (iap) as long as map, basally stouter than map but apically tapering to pointed tip, smooth except for slight rugosities on distal part. Solenophore (sph) large, almost as long as map, folded around solenomere (slm), three-lobed, all lobes of equal length, but dorsal and ventral lobes (sph-d and sph-v) stouter, finger-shaped, intermediate lobe (sph-i) tapering to long pointed tip.

Distribution and habitat

Known only from the type locality, New Dabaga/ Ulangambi FR, 1930 m a.s.l.

Figures

Fig. 11. Eviulisoma aequilobatum sp. nov., holotype, right gonopod. A. Mesal view. B. Lateral view. C. Ventral view. D. Tip of solenophore, sublateral view. E. Dorsal view. Abbreviations: cxl = coxal lobe; iap = intermediate acropodital process; map = mesal acropodital process; prf = prefemoral part; slm = solenomere; sph-d, sph-i, sph-v = dorsal, intermediate and ventral lobes of solenophore. Scale bars: A–C, E = 0.1 mm; D = 0.05 mm.