Family incertae cedis *
Author
Bird, Graham J
text
Zootaxa
2007
1599
121
149
journal article
49125
10.5281/zenodo.178710
6dfc7d0a-e2a3-46b0-bd4c-856e8f515f61
1175-5326
178710
Akanthophoreus
cf
gracilis
(
Krøyer, 1842
)
(Restricted synonymy and bibliography)
Leptognathia gracilis
(
Krøyer, 1842
)
:
Kudinova-Pasternak, 1970
: 354
–355, fig. 8 [an uncertain synonym].
Kudinova-Pasternak, 1976
: 118
–119, [an uncertain synonym].
Kudinova-Pasternak, 1984
: 829
[an uncertain synonym].
Lang, 1957
: 13
–30, figs G–M, O–P.
Leptognathia longiremis
(
Lilljeborg, 1864
)
:
G.O. Sars, 1896
: 27
, plate XII (not
longiremis sensu
Lilljeborg, 1864
.
Leptognathia Sarsii
Hansen, 1901
:
Hansen, 1909
: 229
–231, plate V fig 3a–b.
Paraleptognathia gracilis
(
Krøyer, 1842
)
:
Guerrero-Kommritz, 2004
: 25
–30, figs 9–10.
See
Sieg (1983)
for the very complex synonymy and bibliography up to date of publication.
Remarks.
In the Japanese region, under the name
Leptognathia gracilis
, this species has been recorded from the Kurile-Kamchatka Trench at 4895–6710 metres (
Kudinova-Pasternak 1970
), the
Japan
Trench, 7370 metres (
Kudinova-Pasternak 1976
), and more widely from the shelf and bathyal of the Sea of
Japan
, 200– 1900 metres (
Kudinova-Pasternak 1984
). It is very probable that species such as
Akanthophoreus undulatus
n.sp.
and
Akanthophoreus
sp.KK#1 could have (understandably) accounted for the earlier abyssal and hadal records, which should now perhaps be regarded with scepticism. Because of the complexity of this taxon and related species, further study of the shallower Japanese tanaidacean fauna is also required to validate or disregard these records of
A. gracilis
.