A revision of the Cylindroiulus distinctus Lucas group from north Africa, with descriptions of six new species (Diplopoda, Julida, Julidae)
Author
Read, Helen J.
text
Journal of Natural History
2005
2005-09-30
39
18
1491
1532
http://dx.doi.org/10.1080/0022293042000193689
journal article
10.1080/0022293042000193689
1464-5262
4581208
Cylindroiulus gauthieri
Brölemann, 1931
status nov.
(
Figures 21–25
,
59
)
Cylindroiulus (Phalloiulus) distinctus Gauthieri
Brölemann 1931: 127
.
Material studied.
LECTOTYPE
(here designated):
Algeria
:
„
,
Forêt
de Chênes
à
Tala Kitane
(Kabylie),
H. Gauthier
coll.,
11 December 1930
, 2755; 5
„
,
4 juvenile
„
,
6♀
, details as above; 1
„
(illustrated),
1 juvenile
„
,
13♀
,
El Kseur, F.
t.
d’Akfadou
1320 m
, F. ne des IFS,
29 October 1984
, collected by the MRSN
Spedizione
‘‘
Algeria’
84’’
Boffa
,
Casale
,
Cavazzuti
,
Gavetti
,
Giachino
,
Levi
(
MRSN
); 2
„
(1
„
SEM
),
1♀
,
Tizi Ouzou
Azazga F.
t. des Beni-Ghobri,
620 m
,
28 October 1984
, collected by the MRSN Spedizione ‘‘Algeria’84’’ Boffa, Casale, Cavazzuti, Gavetti, Giachino, Levi (
ZMUC
); 1
„
, El Kseur, F. t. d’Akfadou,
900 m
12 November 1984
, collected by the MRSN Spedizione ‘‘Algeria’84’’ Boffa, Casale, Cavazzuti, Gavetti, Giachino, Levi (
MRSN
); 1
„
, Kabylie (Gauthier), 2738 (
MNP
); 1
„
, Kabylie (Gauthier), 2736 (
MNP
);
1♀
,
1 juvenile
„
,
Forêt de Pins de Baïnem
près Alger (Gauthier),
11 November 1930
(
MNP
). The original description (
Brölemann 1931
) was made on the basis of specimens collected by
H. Gauthier
as listed above.
Total material examined.
38 (11
„
).
Diagnosis.
Fairly large, predominantly dark species. Gonopods with an extremely large phylacum, brachite appearing hooded or wing-like, solenomere sometimes with seta-like projections. Large projection X and smaller projection Y.
Descriptiυe notes.
Body length
33.5–40.5 mm
(
„
) to
49 mm
(
♀
), maximum vertical diameter
2.3–2.8 mm
(
„
) to 3.5 (
♀
). Number of podous body rings 49–52 (
„
), 47–56 (
♀
).
Colour.
Very similar to
C. distinctus
. Thin black mid-dorsal line usually present but not continuous. Anterior portions of metazonae often yellowish.
Eyes.
Usually clearly readable, not reduced. Males with 10–11 rows, females up to 11.
Telson
.
Pointed, slightly projecting dorsal projection in males, less so in females. Preanal ring usually with 9–12 pairs of setae, mostly arranged dorsally and ventrally with few laterally. Ventral scale with one to four pairs of setae, more usually three or four. Anal valves with 10–15 pairs usually arranged in two rows. (Brölemann’s specimen mostly one row.)
Oυerall body shape.
No obvious posterior attenuation or anterior constriction. Metazonal vaulting slight, striae close and even.
Legs.
Legs 0.56
X
body height, accessory claw surpassing claw by 83% of claw length.
Male sexual characters
Figures 21–25. Gonopods of male
C. gauthieri
from Algeria, El Kseur, F. t. d’Akfadou. (21) Lateral view. (22) Mesal view. (23) Posterior view. (24) Anterior view. (25) Anterior (and slightly ventral) view of posterior gonopods. Scale bars: 0.1 mm.
Mandibular stipites.
Well developed.
First pair of legs.
Small sharp hook.
Segment 7.
With wide gap ventrally.
Gonopods (
Figures 21–25
,
59
).
Promerite long and slender, slightly hooked apically in lateral and mesal views, rounded in anterior view. No clear ‘‘window’’ (cf.
C. distinctus
). Flagellum normal. Mesomerite slightly shorter than promerite, fitting snuggly against promerite in mesal and lateral views. Paracoxal process absent, paracoxal rim high. Solenomere rounded subapically and narrower in mesal view than
C. distinctus
, with apical hook pointing laterally. Large phylacum projecting from posterior surface of solenomere running from just below the apex, with square-ended apical projection bent laterad. Large projection X triangular in anterior view, beak-shaped in lateral view. Large brachite triangular in shape in anterior view, hood-like in lateral view and more extensive than in
C. distinctus
and lacking additional meso-apical tooth. Small projection Y most clearly seen in anterior view of posterior gonopods. In one male the brachite appears more as if there are two flanges rather than a hood-like structure. The presence/absence of setae-like projections on the solenomere is variable.
Female sexual characters
Operculum broad, as in
C. distinctus
but with central depression.
Comments
This species seems sufficiently different from
Cylindroiulus distinctus
to be considered a species rather than a subspecies. Notable differences are: the shape of promerite, the shape of brachite including projections X and Y, the extent of the phylacum.