Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
Author
Sigwart, Julia D.
Author
Sirenko, Boris I.
text
Zootaxa
2012
3195
1
38
journal article
45430
10.5281/zenodo.280094
bb00c6b5-4487-466c-bb24-0189eb04f31f
1175-5326
280094
Leptochiton foresti
(
Leloup, 1981
)
Lepidopleura
[sic]
foresti
Leloup 1981
: 321
, text fig. 2, pl. 2, figs 7–10.
Leptochiton foresti
:
Kaas 1982
: 88
;
Kaas & Van Belle 1985
: 122
–124, fig. 54, map 44;
Sigwart 2008a
: tables 1–2, fig. 2B; Sigwart
et al.
2011: 567, table 3, fig. 2.
Material examined.
Holotype
(
MNHN
5878) and 4
paratypes
(
MNHN
5945, 5946, 5950, 5951).
56 specimens
in 13 lots from the
Philippines
.
Distribution.
Philippines
, known from the region 9–14° N, 120–123° E, generally found in
137–484 m
(summarised in
Kaas & Van Belle 1985
). Two new records reported here are from deeper waters,
982–989 m
(Panglao 2005 sta. CP2385) and the deepest record for the species,
1764 m
(Panglao 2005 sta. CP2356).
Remarks.
This species has perhaps the most distinctive and easily identified sculpture of any of the South Pacific
Leptochiton
spp., with around 50 well-separated longitudinal rows of round granules on the central area of intermediate valves and radiating chains of flatter granules on the lateral areas (see
Kaas & Van Belle 1985
: fig. 54).
Kaas & Van Belle (1985)
erroneously reported that
L. foresti
has 16–18 gills per side. The species consistently has 10 gills per side in adult specimens, confirmed here by re-examination of the
type
series.