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
Keroeides gracilis
Whitelegge, 1897
Keroeides gracilis
Whitelegge, 1897: 308
, pl. 16, fig. 1–5 (Funafuti).
?
Keroeides gracilis
Grasshoff 1999: 18
, figs. 19–20 (
New Caledonia
).
?
Keroeides pallida
Hiles, 1899: 201
, pl. 22, figs. 12–16.
Opinion: There is not enough evidence that this species occurs in the region.
Justification:
These Indian records seem to be either invalid or unconfirmable
:
Thomson & Henderson 1906: 22–23
, pl. 4, fig. 1–3 (Andamans);
Fernando 2011: 26
, pl. 7, fig. 1&1d (SE coast);
Fernando
et al
. 2017: 42
, pl. 16, fig. 1–1d (SE coast).
Literature analysis
: This species was originally described from Funafuti in the central west Pacific with very minimal illustrations. Later,
Hiles (1899: 201)
reported it from New
Guinea
without having seen the
holotype
and just relying on the original inadequate description.
Thomson & Henderson’s (1906)
description of material from the region does not appear to represent this species. Indeed, those authors pointed out a number of considerable morphological differences from the
holotype
, such as: the length, arrangement and form of the coenenchymal sclerites; the low height of the calyces (only half the original); and the different arrangement and type of sclerite in the calyces. Their illustration of a branch fragment is also very different from that given by
Grasshoff (1999)
, who, however, had also not seen the
holotype
. Grasshoff cites
Muricella grandis
Nutting, 1910
as a synonym after having seen the
holotype
of that species. As it is not possible to recognise that species from Nutting’s description where only a single sclerite was figured, it is valuable to know it can be compared with the description of Grasshoff’s material.
There are notable differences between Whitelegge’s description and the two identical descriptions of an Indian specimen by
Fernando (2011)
and Fernando
et a
l. (2017). For example: (presented in the order Fernando / Whitelegge) axial sclerites
0.2 mm
/
0.5 mm
; coenenchymal spindles to
2.6 mm
/ to
1.2 mm
; calyx sclerites
0.26 mm
/
0.6 mm
; tentacle sclerites
0.1 mm
/
0.2 mm
. These are quite substantial differences and probably not simply due to variability. Rao & Devi, (2003) just list the species.