New records of processid shrimps from the Indo-West and East Pacific (Crustacea: Decapoda)
Author
Grave, Sammy De
Author
Anker, Arthur
text
Zootaxa
2013
3640
2
224
241
journal article
10.11646/zootaxa.3640.2.6
00f36003-a267-4b11-9cc7-4f86ef373934
1175-5326
216492
77FB19E2-2C2D-4F16-A0A4-A04356270668
Nikoides maldivensis
Borradaile, 1915
Fig. 4
Nikoides maldivensis
Borradaile, 1915: 209
.—Borradaile, 1917: 411, pl. 58, fig. 11.—Hayashi, 1975: 62, fig. 5—Chace, 1997: 36.
Processa jacobsoni
De
Man
, 1921: 95
.
Material examined.
Mariana Islands
: 1 ov. female (pocl 6.1), FLMNH UF 4125,
Guam
, Tepungan Channel tunnel, 13.4646 144.688,
0–4 m
, leg. G. Paulay,
16.06.2003
[BGUAM-106]; 1 ov. female (pocl 8.2), FLMNH UF 4194,
Guam
, Tepungan Channel tunnel, 13.4646 144.688,
0–4 m
, leg. G. Paulay,
16.06.2003
[BGUAM-106].
French Polynesia
:
1 male
(pocl 4.5), FLMNH UF 23270, Moorea, Atiha Bay, inside barrier reef, near pass channel, -17.5957 -149.8456, under and on rocks and rubble, hand collecting, leg. S. McPherson, G. Paulay & C. Meyer, 0
8.12.2009
[BMOO-9974];
1 female
(pocl 5.0), FLMNH UF 23274, Moorea, NW Motu Islands, in channel between two islands, rubble field in shallow lagoon, -17.4893 -149.9132, under large boulders,
0.5–2 m
, hand collecting, leg. S. McPherson, J. Houder & A. Crowther,
25.11.2009
[BMOO-9278]; 1 ov. female (pocl 7.6), FLMNH UF 23276, Moorea, lagoon in front and west of Hilton Hotel, -17.4823 -149.825, under rocks and on ledges,
10–15 m
, leg. G. Paulay, C. Meyer, S. McPherson, S. Haddock, M. Parker & S. McKeon,
22.10.2009
[BMOO-6503].
Australia
:
1 female
(pocl 3.6), ZRC 2012.0976,
Christmas Island
, Flying Fish Cove, -10.429152 105.669210, reef slope, night dive, leg. H.H. Tan
et al.
, 0 1.02.2010 [CI-D17(152)].
Colour pattern.
Bright yellow-orange, resulting from small reddish chromatophores on semitransparent yellow background, irregular white chromatophores forming short, dorsal, transverse bands on abdomen, sometimes connected by thin longitudinal line of white chromatophores, and larger or smaller patches and spots elsewhere on abdomen and on carapace; antennular peduncles yellow with bright white spots; third maxilliped reddish-orange with conspicuous white patches; pereiopods mostly uniform yellow; tail fan yellow densely covered with large areas of white chromatophores (
Fig. 4
).
Remarks.
Chace (1997) clarified the
type
locality of
N. maldivensis
as Amirante
Island
,
Seychelles
(as stated in Borradaile 1917), with the “
Maldive Islands
” as cited in Borradaile (1915) being in error. The present material presents no particular features, with the large dorsal tooth separated from the rostral apex being highly diagnostic for the species. The colour pattern of
N. maldivensis
also seems to be very characteristic, as the Moorea specimens (
Fig. 4
) match the colour photo in Minemizu (2013).
FIGURE 4.
Nikoides maldivensis
Borradaile, 1915
. A, ov. female, dorsal view, Moorea (FLMNH UF 23276); B, same specimen, lateral view; C, male, dorsal view, Moorea (FLMNH UF 23270).
Ecology.
This species appears to be restricted to coral reefs and adjacent rubble fields, usually dwelling in crevices of coral rubble and dead coral heads or under large rocks, and roaming on the reef or dock walls and ledges at night. It appears to prefer very shallow water, with a depth range of
0–
4 m
.
Distribution.
The species has a wide distribution in the Indo-West Pacific, based on previous records from
Kenya
,
Seychelles
(Amirante, Farquhar Atoll),
Indonesia
(Sumatra),
Micronesia
(Pohnpei),
Samoa
, and Hawaii (Hayashi 1975; Chace 1997) and is here recorded for the first time from
Guam
,
Christmas Island
and
French Polynesia
. Chace (1997) also mentioned
Fiji
and
Caroline Islands
as part of the distribution of
N. maldivensis
, but it is unclear on which material these records were based.