Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean
Author
In, First Published
text
Zootaxa
2022
2022-06-02
5146
1
129
journal article
10.11646/zootaxa.5146.1.1
11755334
7626155
52C3E5E3-80B6-49DB-BC9C-194560D491F7
Paraliomera dispar
(
Stimpson, 1871a
)
(
Fig. 41A, B
)
Chlorodius dispar
Stimpson, 1871a: 140
[
Type
locality: reef at
Cruz del Padre
,
Cuba
].
Trindade and Martin Vaz specimens.
2 males
,
2 females
(
MZUSP 41283
),
Brazil
, off
Espírito Santo
,
Trindade Island
,
Parcel das Tartarugas
,
20º31’01.3”S
,
29º17’56.9”W
,
J.B. Mendonça
coll.,
11.vii.2012
,
14.5 m
.
5 males
(
MZUSP 41068
), ibidem,
26.vi.2012
,
9.5 m
.
1 male
(
MZUSP 41287
),
ibidem
,
20º30’29.5”S
,
29º18’37.0”W
,
J.B. Mendonça
coll.,
20.vi.2016
,
8.2 m
.
1 male
(
MZUSP 41288
), (
MZUSP 40829
),
ibidem
,
Praia
do M,
20º30’50.71”S
,
29º20’21.91”W
,
J.B. Mendonça
coll.,
13.ii.2019
, tide pool,
0.5 m
.
2 males
(
MZUSP 41289
),
ibidem
,
Enseada da Cachoeira
,
Farrilhões
,
20º31’22.4”S
,
29º19’52.0”W
,
J.B. Mendonça
coll.,
4.iv.2014
,
12.2 m
.
4 males
,
1 female
(
MZUSP 41049
),
ibidem
,
4.vii.2012
,
17.9 m
.
1 ovigerous female (
MZUSP 41290
),
J.B. Mendonça
coll.,
9.vii.2013
,
10.4 m
.
1 male
(
MZUSP 41298
),
ibidem
,
Enseada Praia
do
Príncipe, Ilha
Sul
,
20º31’34.32”S
,
29º19’27.98”W
,
J.B. Mendonça
coll.,
6.xi. 2014
,
17.6 m
.
1 male
(
MZUSP 40839
),
ibidem
,
Praia do Noroeste
,
20º29’46.4”S
,
29º20’35.4”W
,
J.B. Mendonça
coll.,
30.vii.2018
,
9 m
. 1 male (
MZUSP 41301
),
ibidem
,
20.xi.2017
,
9.4 m
.
1 male
(
MZUSP 41303
),
ibidem
,
20º29’32.3”S
,
29º20’32.6”W
,
J.B. Mendonça
coll.,
22.vi.2012
,
14.9 m
.
10 males
,
10 females
(3 ovigerous) (
MZUSP 40941
),
ibidem
,
20º29’48.14”S
,
29º20’35.21”W
,
J.B. Mendonça
coll.,
13.ii.2019
,
4 m
. 1 female (
MZUSP 41324
),
ibidem
,
20º30’18.72”S
,
29º18’31.67”W
,
J.B. Mendonça
coll.,
26.x.2014
,
9.9 m
.
1 male
(
MZUSP 40566
),
ibidem
,
20º29’48.14”S
,
29º30’35.21”W
,
J.B. Mendonça
coll.,
13.ii.2019
,
4 m
. 3 females (
MZUSP 41043
)
ibidem
,
Laje
,
Enseada Noroeste
,
20º29’57.8”S
,
29º20’39.2”W
,
J.B. Mendonça
coll.,
9.vii.2012
,
17.7 m
.
3 males
,
1 female
(
MZUSP 41050
)
,
1 female
,
4 juveniles
(
MZUSP 41408
),
Martin Vaz Archipelago
,
20º30’45.7”S
,
29º18’21.9”W
,
J.B. Mendonça
coll.,
24.vii.2013
,
12.3 m
.
Size of largest male: cl
4.9 mm
, cw
6.9 mm
; largest female: cl
5.1 mm
, cw
7.5 mm
.
Comparative material examined.
None.
Distribution.
Bermuda
,
Bahamas
, Florida Keys, Gulf of Mexico, Antilles,
Colombia
,
Venezuela
and
Brazil
(Trindade and Martin Vaz, this study) (
Rathbun 1930
;
Garth 1978
;
Lemaitre 1981
;
Felder
et al.
2009
).
Kempf (1970)
listed
Paraliomera dispar
from the circalittoral zone of the northeastern Brazilian coast without further specifics. This species has not been mentioned from
Brazil
subsequently until now.
Ecological notes.
Paraliomera dispar
has been reported from coral reefs, rock pools, rubble, sand, shell, grass and mud bottoms to depths of
154 m
(
Rathbun 1930
;
Garth 1978
;
Lemaitre 1981
;
Felder
et al.
2009
). In Trindade and Martin Vaz, where females have been found to be ovigerous already at cl
3.1 mm
, cw
4.9 mm
,
P. dispar
was found associated with calcareous algae and in rocky tide pools to depths of
17 m
.
This species is parasitized by the isopod
Cancricepon choprae
(see
Rathbun 1924b
;
Markham 1979
)
Remarks.
The carapace is almost smooth dorsally, shining. The chelipeds are remarkably unequal; the major cheliped is provided with dense setae on the distomesial and mesioproximal surfaces of propodus and fingers, respectively; the black color of the cheliped fixed finger runs back a little on the ventral surface of the propodus (
Fig. 41A, B
). The carapace anterolateral margin is almost entire in the adult, whereas slightly toothed in the juveniles.