The Polyplacophora (Mollusca) collected during the First International Marine Biodiversity Workshop for Rodrigues (western Indian Ocean), with the description of a new species
Author
Schwabe, Enrico
text
Journal of Natural History
2004
2004-12-01
38
23
3143
3173
http://dx.doi.org/10.1080/00222930410001695114
journal article
10.1080/00222930410001695114
1464-5262
5251862
Cryptoconchus oliveri
n. sp.
(
figures 14–
16
,
17E
)
Cryptoconchus porosus
:
Leloup, 1981a: 21
[
non
(de Blainville MS,
Burrow, 1815
)].
Cryptoconchus burrowi
:
Kaas, 1985a: 331
;
1986: 20
[
non
(
Nierstrasz, 1905
)].
Material examined.
2 spms,
ca
9.6
6
4.9 mm
(curled) (pd), 8.4
6
5 mm
: RDS
35, Grande Baie, 19
‡
39.047
’
S, 63
‡
26.381
’
E,
21.5 m
, coral rubble, leg. N. Bruce.
FIG. 14.
Cryptoconchus oliveri
n. sp.
(A) Dorsal view of head valve; (B) close-up of the tegmentum region of the head valve; (C) dorsal view of the second valve; (D) close-up of the posterior tegmentum region of the second valve; (E) dorsal view of the tail valve; (F) close-up of the tegmentum of the tail valve. Scale bars: 1 mm (A, C); 200
M
m (B, D, F); 500
M
m (E).
FIG. 15.
Cryptoconchus oliveri
n. sp.
(A) Radula; (B) close-up of the head of the major lateral tooth and the spatulate uncinal tooth from the right side; (C) frontal-lateral view of the central tooth; (D) nude dorsal girdle surface; (E) close-up of the pores, to show an empty pore and a spicule
in situ
; (F) isolated dorsal girdle spicules. Scale bars: 100
M
m (A); 50
M
m (B, C); 250
M
m (D); 15
M
m (E); 20
M
m (F).
The larger disarticulated specimen becomes the
holotype
, which is deposited in NMGW (
NMW
.Z.2001.061.00001), the other, selected as
paratype
, is deposited in the author’s collection (ES coll. 235). In addition, material from the MNHN, cited
by
Kaas (1986)
gets
paratype
status. The specimens are preserved in ethanol and measure 8.4
6
2.4 mm
(
Mayotte
: récif M’sanga
Tsohole St.
66, 5 m; 12
‡
41.8
’
S 44
‡
58.7
’
E; leg.
P. Bouchet
,
29 March 1977
) (16 ctenidia on both sides of the foot) and 15.6
6
6 mm
.