On the Family Nannastacidae (Crustacea, Cumacea) from the Australian Museum Collection
Author
Petrescu, Iorgu
text
Records of the Australian Museum
2018
2018-03-28
70
1
1
111
http://dx.doi.org/10.3853/j.2201-4349.70.2018.1645
journal article
10.3853/j.2201-4349.70.2018.1645
2201-4349
5236860
82A58B37-13FE-4EA8-AFF2-E954CDBEFD69
Campylaspis cursaruae
sp. nov.
Fig.
7
Holotype
subadult
♀
,
1.93 mm
, P.64756,
Tasman
Sea
,
Lord
Howe Rise, -27.9832° 162.8592°,
1250 m
, epibenthic sled, coarse sediment with pumice,
6 May 1989
,
J.K. Lowry
& party,
RV
Franklin
, FR
0589-28, in
AM
.
Paratype
1♀
,
P.88242, same data as holotype, in
AM
.
Etymology
. The species is dedicated to my colleague, Ileana Cursaru, chief economist at the “Grigore Antipa” Museum, as a sign of sincere gratitude and friendship.
Diagnosis
. Carapace 0.54 total body length; merus with 5 teeth; propodus with 4 teeth; pereopod 2 with a long digitiform tip; uropodal peduncle 3 pleonite 6 length, 2.1 endopod length; exopod 0.83 endopod length, endopod with 4 microserrate setae medially.
Description
.
Carapace
0.54 body length, 1.77 as long as high; short serration on anterior part of ventral margin; oblique, anterior margin; small antennal notch; pseudorostrum 0.27 carapace length; smooth integument (
Fig. 7 A
). —
Antenna 1
peduncle article 1 0.6 rest of article’s length; article 2 0.3 article 3 length; main flagellum as long as peduncle article 3 length, accessory flagellum with 1 article; aesthetascs 3.2 main flagellum length (
Fig. 7 B
). —
Maxilliped 3
basis 0.63 rest of article’s length, with 2 pappose setae; merus 3.2 ischium length, serrated, with 7 setae, 5 teeth and 1 pappose seta; merus to propodus with serrate margins; carpus 0.47 merus length, with 3 pappose setae; propodus 0.9 carpus length, with 3 pappose setae; dactylus 0.55 propodus length, with 3 simple setae; with exopod (
Fig. 7 C
). —
Pereopod 1
basis 0.9 rest of article’s length, with 1 pappose and 2 plumose setae; ischium 0.1 basis length, with 1 pappose seta; merus 3.6 ischium length, with 2 simple and 5 pappose setae; carpus 0.7 merus length, with 5 pappose setae; propodus 1.05 carpus length, with 5 pappose setae; dactylus 0.4 propodus length, with 4 simple setae; with exopod (
Fig. 7 D
). —
Pereopod 2
basis 0.49 rest of article’s length, with 1 pappose and 1 simple seta; merus 5.3 ischium length, with 1 pappose seta; carpus 2.9 merus length, with 1 pappose and 3 simple setae; dactylus 3.8 propodus length, with 9 simple setae and digitiform tip; with exopod (
Fig. 7 E
). —
Pereopod 3
basis 1.36 rest of article’s length; merus 1.16 ischium length; merus with 1 simple seta; dactylus fused with terminal robust seta (
Fig. 7 F
). —
Pereopod 4
basis 1.1 rest of article’s length; merus 2 ischium length, with 1 simple seta; carpus 2 merus length, with 2 simple setae; propodus 0.25 carpus length, with 1 simple seta; dactylus 0.8 propodus length, fused with terminal robust seta (
Fig. 7 G
). —
Pereopod 5
basis 0.58 rest of article’s length; ischium with 1 seta; merus 2 ischium length, with 1 simple seta; carpus 2 merus length, with 1 annulate seta; propodus 0.25 carpus length, with 1 annulate seta; dactylus 0.5 propodus length, fused with terminal robust seta (
Fig. 7 H
). —
Uropod
peduncle 3 pleonite 6 length, strongly serrate medially, 2.1 endopod length; exopod 0.83 endopod length, with 3 simple setae medially and 1 terminal robust seta; endopod with 4 microserrate setae and 1 terminal microserrate robust seta (
Fig. 7 I
).
Remarks
. The new species is closely related to
C. popai
sp. nov.
in the smooth carapace, maxilliped 3 with serrate margins of merus to propodus, pereopod 2 dactylus with digitiform tip, pereopods 3–5 fuse with terminal seta. It differs with: longer carapace, antenna 1 peduncle with article 3 shorter, pereopod 1 with more robust articles, pereopod 2 with longer dactylus, uropod endopod with 4 microserrate setae vs.
7 in
C. popai
.
Distribution
. Tasman Sea (between
Australia
and
New Zealand
), Lord Howe Rise, at
1250 m
depth