The taxonomy of Indian gorgonians: an assessment of the descriptive records of gorgonians (Anthozoa: Octocorallia: Alcyonacea) recorded as occurring in the territorial waters of India, along with neighbouring regions and the Andaman and Nicobar Islands, and the highlighting of perceived unethical practice
Author
Ramvilas, Ghosh
0000-0001-5028-9058
ramvilas@kufos.ac.in
Author
Alderslade, Philip
0000-0001-5801-4681
phil.alderslade@csiro.au
Author
Ranjeet, Kutty
0000-0001-5028-9058
ramvilas@kufos.ac.in
text
Zootaxa
2023
2023-02-07
5236
1
1
124
journal article
54753
10.11646/zootaxa.5236.1.1
64c50077-1b03-44c5-9af9-0dac9180d62d
1175-5326
7639327
796FF9F5-E71F-4C69-92CC-CF4D6752BD77
Acanthogorgia ceylonensis
Thomson & Henderson, 1905
Acanthogorgia ceylonensis
Thomson & Henderson, 1905: 290–291
, pl. 4, 5, fig. 6, 12 (Trincomalee).
Opinion This species does occur in the region, but the generic identity is uncertain.
Justification:
These Indian records seem to be either invalid or unconfirmable
:
Thomas & George 1990: 421
, pl. 1D, fig. 1f, 1–3 (off
Bombay
);
Thomas
et al
. 1998: 163–164
, fig. 1C, 1–3 (off Quilon).
Literature analysis
: This species was described from
Sri Lanka
with just three sclerite figures—two crosses and a bow-shaped spindle. The
holotype
has never been redescribed so the species is essentially unrecognisable, but the text together with the shape of the colony and sclerites strongly suggest that it is not a species of
Acanthogorgia
.
In fact,
Stiasny (1947: 31)
was of the opinion that the species was in the “
Muriceidae
”. Regardless of this,
Thomas
et al.
(1998)
, when commenting on the polyps of their specimen, state they have “
Acanthogorgia
type spicules projecting out at the tip of calyces {which} may give a characteristic appearance to the calyces”, and
Thomas & George (1990)
similarly state “the crown of spines is conspicuous … their presence gives a characteristic bristle-like appearance under magnification”, and both papers figure typical crown-spine sclerites. In contrast, the original description simply says “the spicules are arranged on the verrucae in 8 rows
en chevron.”
It is impossible to know what species
Thomas
et al
. (1998)
or
Thomas & George (1990)
had before them, but it was in the genus
Acanthogorgia
and was not the same as what
Thomson & Henderson (1905)
had.