Additions to the aspidochirotid, molpadid and apodid holothuroids (Echinodermata: Holothuroidea) from the east coast of southern Africa, with descriptions of new species
Author
THANDAR, AHMED S.
text
Zootaxa
2007
2007-03-01
1414
1
1
62
http://dx.doi.org/10.11646/zootaxa.1414.1.1
journal article
10.11646/zootaxa.1414.1.1
11755334
5077005
DC93A9BC-D24E-44AD-99AF-79CACCCFB984
Holothuria (Selenkothuria) erinacea
Semper, 1868
Figure 13
Holothuria erinaceus
Semper, 1868:91
k, 250, 279, pl.30: fig.24, p1.34:
fig.9, p1.35: fig.14, p1.36: fig.11, p1.38: figs. 1 & 2.
Holothuria (Selenkothuria) erinaceus
Cherbonnier, 1988:60
(synonymy before 1988), fig. 22.
Holothuria (Selenkothuria) erinacea
Samyn 2003:68
(records after 1988), figs. 27 A–E, 54B.
Syntypes
ZMH
E2551
.
Type locality
Fiji
.
Previous southern African record
Northern
Mozambique
and
KZN
,
South Africa
.
Material examined
Isipingo Beach
,
KZN
,
A.S.Thandar
,
13 x 1969
,
1 spec.
, (deposited in the Australian Museum under AM
J20196
)
.
Local distribution
Known only from southern
KZN
and northern
Mozambique
.
General distribution
Indo-West Pacific but not yet recorded from Hawaii, W.
India
,
Pakistan
,
China
and
Japan
.
Habitat
KZN
specimen found in rock pool beneath several specimens of
H. cinerascens
.
Description
Size 90 x
31 mm
; radial plates of calcareous ring (
Figure 13E
) elongate, broad anteriorly, narrower and convex posteriorly. Madreporite (
Figure 13D
) well calcified, oval. Body wall spicules comprise rods and plates, variously developed (
Figure 13A
), the former with spiny margins and none to few holes, the latter usually with one or more series of holes on each side of shaft. Papillae rods curved, elongate, with or without perforations (
Figure 13B
). Tentacle rods (
Figure 13C
) with expanded and perforated ends.
FIGURE 13.
Holothuria (Selenkothuria) erinacea
Semper. Aust. Mus. AM
J
20196. Isipingo. A. Rods and plates from dorsal body wall (various stages); B. papillae rods; C. tentacle rods; D. madreporite; E. part of calcareous ring. (A. & C scale a)
Remarks
The first record of this species from southern Africa is that of
Kalk (1959)
, based upon material from
Mozambique Island
. The single
KZN
specimen was initially thought to be
H. portovallartensis
(see
Thandar 1971
: M.Sc. thesis, unpublished) and sent to Dr. Cherbonnier for confirmation. Dr Cherbonnier merely queried the identification but did not name the species despite the fact that the
Mozambique Island
material was identified by him. However, Dr. Rowe (pers.com.) is of the opinion that its spicules are quite typical of
H. (S.) erinacea
.
I respect Dr. Rowe’s judgment and now also realize that the spicules correspond well with those illustrated by
Cherbonnier (1988
: fig.22) for the
Madagascar
material. Notwithstanding this, it must be pointed out that the spicules of both the
KZN
and
Madagascar
specimens strongly resemble those of
H.(S.) portovallartensis
illustrated by
Caso (1954)
and
Deichmann (1958)
, even in their dimension (
50–140 µm
in the
KZN
specimen;
62–155 µm
in
H. portovallartensis
). Hence, it is probable that, since both
H. parva
and the typical
H. erinacea
have parallel forms in the East Pacific, respectively in
H. lubrica
and
H. theeli
, the
KZN
form of
H. erinacea
may be the parallel of East Pacific
H. portovallartensis
,
differing in its smaller size and different colouration. Just as the latter species was confused with
H. theeli
on several occasions until it was separated by
Caso (1954)
, so it is likely that what is considered as
H. erinacea
in the Indo-West Pacific region may represent two species.
Clark and Rowe (1971)
expressed doubt as to the occurrence of
H. erinacea
on the east African coast. This second record indicates that the species is present but perhaps not common.