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)
Author
Enghoff, Henrik
text
European Journal of Taxonomy
2018
2018-06-19
445
1
90
journal article
10.5852/ejt.2018.445
5dfd4ff4-6c8b-47f4-9aa7-0f6b1b2af967
1489598
852A3F68-B728-413A-B12E-56F306D56C35
Eviulisoma cetafi
sp. nov.
urn:lsid:zoobank.org:act:
2754
E233-F5D6-493B-B410-
1067
FF17
A
521
Figs 7B, D
,
13
Diagnosis
Differs from other species of the
E. kwabuniense
group by having the solenophore two-lobed, its dorsal lobe developed as a very strong hook, hook much larger than those seen in certain other species (
E. ejti
sp. nov.
,
E.akkariae
sp. nov.
,
E. nessiteras
sp. nov.
).
Etymology
The species name honours CETAF, Consortium of European Taxonomic Facilities, www.cetaf.org, in recognition of the immense importance of CETAF for natural history collections in Europe and for collections-based research.
Material studied
(total: 12 ♂♂)
Holotype
TANZANIA
: ♂,
Iringa Region
,
Udzungwa Scarp FR
, above
Chita Village
,
1300–1400 m
a.s.l.
,
26 Oct.– 14 Nov. 1984
,
pitfall traps
in montane rain forest,
N. Scharff
leg. (
ZMUC
).
Paratypes
TANZANIA
: 2 ♂♂,
Iringa Region
,
Udzungwa Scarp
FR, above
Chita Village
,
1450 m
a.s.l.
,
4–9 Nov. 1984
,
pitfall traps
in montane rain forest,
N. Scharff
leg. (
ZMUC
)
;
4 ♂♂,
Iringa Region
,
Udzungwa Scarp
FR, above
Chita Village
,
1500 m
a.s.l.
,
2–13 Nov. 1984
,
pitfall traps
in montane rain forest,
N. Scharff
leg. (
ZMUC
)
;
2 ♂♂,
Iringa Region
,
Udzungwa Scarp
FR, above
Chita Village
,
1500–1550 m
a.s.l.
,
2–13 Nov. 1984
,
pitfall traps
in montane rain forest,
N. Scharff
leg. (
ZMUC
)
;
1 ♂,
Iringa Region
,
Udzungwa Scarp
FR, above
Chita Village
,
1300 m
a.s.l.
,
2–6 Nov. 1984
,
pitfall traps
in montane rain forest,
N. Scharff
leg. (
ZMUC
)
;
2 ♂♂,
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
)
.
Description
(male)
SIZE. Length
20 mm
, max. width
1.9–2.1 mm
.
COLOUR. After 33 years in alcohol all whitish.
ANTENNAE. Reaching back to middle of ring 3.
BODY RINGS. Paranota indicated by very faint ridges on body ring 2 (as in
Fig. 4C
), otherwise completely absent. Stricture between pro- and metazonite not striolate. A transverse row of setae on all body rings, but the majority of setae abraded in most specimens.
Fig. 13.
Eviulisoma cetafi
sp. nov.
, paratype, right gonopod.
A
. Mesal view.
B
. Meso-dorsal view.
C
. Latero-ventral view.
D
. Ventral view.
E
. Spiny tip of
iap.
F
. Ridged area of solenophore with tip of solenomere sticking out. Abbreviations:
cxl
= coxal lobe;
iap
= intermediate acropodital process;
map
= mesal acropodital process;
prf
= prefemoral part;
ra
= ridged area of solenomere;
slm
= solenomere;
sph-d
,
sph-i
,
sph-v
= dorsal, intermediate and ventral lobes of solenophore. Scale bars: A–D = 0.1 mm; E = 0.01 mm; F = 0.02 mm.
HYPOPROCT. Large, trapezoid, with three prominent apical tubercles, middle tubercle larger.
LEGS. Length 1.2× body width. Relative lengths of podomeres: femur> prefemur> tarsus> tibia> postfemur. Scopulae (
Fig. 7B, D
) on femur, postfemur, tibia and tarsus until ca midbody, thereafter gradually disappearing.
STERNUM 5.
A
small trapezoid process between legs 4.
STERNUM 6. Deeply excavated. Rim of excavation simple.
GONOPODS (
Fig. 13
). Coxal lobe (
cxl
) moderate. Prefemoral part (
prf
) ca half as long as acropodite. Mesal acropodital process (
map
) a long, smooth, almost straight rod, apically pointed, subapically with small triangular side branch. Intermediate acropodital process (
iap
) a very slender, straight rod, densely covered in long spines on part of its surface, especially on apical part (Fig. E). Solenophore (
sph
) deeply split into two long lobes; dorsal lobe (
sph-d
) a very large, strong hook, almost reaching to tip of acropodital processes; ventral lobe (
sph-v
) much shorter, lanceolate; no intermediate process between
sph-d
and
sph-v
; internal surface of
sph
with a ridged area (
ra
,
Fig. 13D, F
).
Distribution and habitat
Known only from the Udzungwa Scarp FR. Altitudinal range
1300–1550 m
a.s.l. Habitat: montane rain forest. Collected together with
E. chitense
sp. nov.