Kergueleniidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) in Australian waters
Author
Lowry, J. K.
Author
Stoddart, H. E.
text
Zootaxa
2010
2010-08-11
2564
1
1
30
https://biotaxa.org/Zootaxa/article/view/zootaxa.2329.1.3
journal article
10.11646/zootaxa.2329.1.3
1175-5326
5301357
Kerguelenia kanowna
sp. nov.
(
Figs 16–18
)
Type material
.
HOLOTYPE
, female,
4.2 mm
, MV
J61505
, south of
Point Hicks
,
Victoria
,
Australia
,
38°19.60'S
149°24.30'E
,
930 m
, rock, rubble, clay, sand, biogenic sediment, WHOI epibenthic sled,
23 July 1986
,
M.F. Gomon
et al.
,
RV
Franklin
, stn SLOPE 33
.
PARATYPES
:
1 female
and
2 males
, MV
J61506
, south of
Point Hicks
,
Victoria
,
Australia
,
38°21.90'S
149°20.00'E
,
1000 m
, WHOI epibenthic sled,
23 July 1986
,
G.C.B. Poore
et al.
,
RV
Franklin
, stn SLOPE 32
;
1 female
, AM P.69011, east of
Broken Bay
,
New South Wales
,
Australia
,
33°30’S
152°09’E
to
33°33’S
152°11’E
,
922–1015 m
, beam trawl,
12 February 1986
, R.
T
.
Springthorpe
, FRV
Kapala
, stn K86-01-08
.
FIGURE 16.
Kerguelenia kanowna
sp. nov.
Holotype female, MV
J61505
, south of Point Hicks, Victoria.
Type
locality
.
South of Point Hicks
,
Victoria
,
Australia
,
38°19.60'S
149°24.30'E
,
930 m
depth
.
Etymology
. Named for the interstate passenger liner TSS
Kanowna
, which sank off Wilsons Promontory in 1929 with no loss of life.
Diagnostic description
.
Antenna 1
peduncular article 1 not or only slightly produced dorsodistally.
Mandible
incisor absent; left lacinia mobilis absent; accessory spine row absent; molar absent.
Maxilla 1
outer plate with 5 setal-teeth, most setal-teeth cuspidate; palp 2-articulate.
Maxilliped
palp article 2 longer than broad
, length 2 x breadth.
Gnathopod 1
basis margins subparallel;
ischium very long
, length 4.3 x breadth; carpus very long, length 4.8 x breadth, subequal to (1.1 x) propodus; propodus tapered distally, length 5.3 x breadth.
Pereopods 3 and 4
propodus with short distal locking seta.
Pereopod 5
basis expanded posteroventrally
, with posteroventral lobe; merus moderately expanded posteriorly.
Pereopod 7
basis with posteroventral lobe not extending much beyond ischium
; merus posteroventral lobe extending more than halfway along, but not beyond, carpus.
Pleonite 3
without dorsodistal boss.
Epimeron 3
posteroventral corner broadly rounded.
Uropod 1
rami with robust setae.
Uropod 3
biramous; inner ramus about 0.5 x outer ramus; outer ramus 2-articulate.
Telson
about as long as broad, length about 1 x breadth.
Remarks
.
Kerguelenia kanowna
belongs to a group of species (
K. antiborealis
,
K. borealis
,
K. leura
,
K. ochotica
and
K. matilda
) in which the basis of pereopod 5 is expanded posteroventrally and gnathopod 1 carpus is subequal to the propodus. It is most similar to
K. antiborealis
from Marion Island in the Southern Ocean. It can be distinguished from that species by the greater size of pereopod 5 merus and of pereopod 7 basis in
K. antiborealis
.
The non-ovigerous
holotype
female has a setose oostegite on pereopod 5 only.
Distribution
. South-eastern
Australia
, in
922–1015 m
depth.