Echinodermata of Lakshadweep, Arabian Sea with the description of a new genus and a species
Author
Sastry, D. R. K.
Erstwhile Scientist, Zoological Survey of India (Ministry of Environment, Forest and Climate Change), FPS Building, Indian Museum Complex, Kolkata - 700016 and S- 2 Saitejaswini Enclave, 22 - 1 - 7 Veerabhadrapuram, Rajahmundry - 533105, India; dwadasirksastry @ gmail. com
Author
Marimuthu, N.
Zoological Survey of India (Ministry of Environment, Forest and Climate Change), FPS Building, Indian Museum Complex, Kolkata - 700016, India; marinemari @ hotmail. com
Author
Rajan, Rajkumar
Marine Biology Regional Centre, Zoological Survey of India (Ministry of Environment, Forest and Climate Change), 130, Santhome High Road, Chennai - 600028, India
text
Records of the Zoological Survey of India
2019
119
4
journal volume
10.26515/rzsi/v119/i4/2019/144963
2581-8686
13186919
Zoobank
Gymnolophus obscura
(Ljungman)
(Pl. VI. Fig. a,b)
1867.
Ophiocnemis obscura
: Ljungman, A.
Öfversigt af Kgl. Vetenskaps-Akademiens Förhandlingar 1866.
23(9): 333.
1969.
Gymnolophus obscura
:
James, D.B.
Bull.
Cent
.
Mar. Fish. Res. Inst. No.
7: 55
.
1971.
Gymnolophus obscura
: Clark, A.M. and Rowe, F.W.E.
Monograph of shallow water Indo-west pacific echinoderms, p.
117 (key), p. 82-83 (distribution).
1988.
Gymnolophus obscura
: James, D.B.
Proc.Symp. Endangered
Marine Animals and Marine Parks,
1985.
1
: 404.
Material
: AG-5. Dt.
03.02.2018
.
One spec.
Description
: The specimen measures
9mm
in disc diameter, disc scales naked. Radial shields
4 mm
long, high crest in the middle, highest at the distal end, gradually sloping towards centre of the disc. Arms
30 mm
long, upper arm plates as long as broad proximally, a little wider further. Lower arm plates octagonal, longer than broad. Arm spines up to 5 proximally, appearing smooth with incipient triangular spikes, lowest arm spine very small with proximally curved and pointed spines at the tip. Only tooth papillae present, no lateral papillae. General colouration black with a longitudinal speckled marking on the arms prominent proximally.
Distribution
:
Lakshadweep
and
Tamil Nadu
.
Elsewhere:
Maldives
, Bay of Bengal, East Indies,
Philippine Islands
and North
Australia
. The species is newly recorded from
Lakshadweep
and it is an addition to N.Z.C.