The orb-weaving spider genus Eustala Simon, 1895 (Araneae, Araneidae): eight new species, redescriptions, and new records
Author
Poeta, Maria Rita Muniz
text
Zootaxa
2014
2014-10-13
3872
5
440
466
journal article
http://dx.doi.org/10.11646/zootaxa.3872.5.2
b180f90a-5aa5-47e1-a9b5-7ae2156e8675
1175-5326
229126
CFBDD55F-B15D-46E6-8C0F-50ECCB6374DA
Eustala ericae
new species
Figs
19
–28
,
85
Type material.
Holotype
:
♂
,
Potreiro Velho
,
São Francisco de Paula
,
Rio Grande do Sul
,
Brazil
,
29
°
14
’S
,
50
°
31
’W
,
XII.
1996
,
A.A. Lise
(
MCTP
14139
).
Paratypes
:
♀
, same data as holotype (
MCTP
14139
);
♀
,
São Luiz do Purunã
,
Paraná
,
Brazil
,
25
º
27
’S
,
49
º
42
’W
,
27
.IV.
1967
,
P. Biasi
(
MZSP
7024
);
♀
,
Cambará do Sul
,
Rio Grande do Sul
,
Brazil
,
29
°02’S
,
50
°08’W
,
30
.VIII.
1994
,
N. Silveira
(
MCN
25806
).
Additional material examined.
BRAZIL
,
Rio Grande do Sul
:
Bom Jesus
(
Fazenda Aver
),
28
°
39
’S
,
50
°
26
’W
,
3
♀
,
24
.III.
1989
,
A.B. Bonaldo
(
MCN
18458
,
18460
);
(
Fazenda Santa Cruz
)
2
♀
,
28
.–
31
.III.
1998
,
A.B. Bonaldo
(
MCN
29284
,
29285
);
Cambará do Sul
,
29
°02’S
,
50
°08’W
,
2
♀
,
09.I.
1976
,
A.A. Lise
(
MCN
3336
,
4049
);
2
♀
,
20
.X.
1994
,
N. Silveira
(
MCN
25822
);
♀
,
II.
2006
;
♀
,
IV.
2006
;
♀
,
XI.
2006
(
MCTP
33344–33346
), all collected by
LOAM
, Projeto Fogo, UNISINOS;
(
Itaimbezinho
)
3
♀
,
27
.IV.
1985
,
A.A. Lise
(
MCN
13292
);
♀
,
18
.V.
1985
,
A.A. Lise
(
MCN
13301
);
São Francisco de Paula
(
Potreiro Velho
),
29
°
14
’S
,
50
°
31
’W
,
♀
,
10
.–
13
.IV.
1997
,
A.A. Lise
(
MCTP
14243
).
Etymology.
The specific name is a patronym honoring the Brazilian arachnologist, and my first advisor, Erica Helena Buckup from Museu de Ciências Naturais, Rio Grande do Sul.
Diagnosis.
Males of
Eustala ericae
n. sp.
(
Figs 19, 20
) are close to those of
E
.
photographica
(see
Poeta
et al
.
2010
a
:
158
, figures 30, 31) by the prominent tegular projection and by the laminar terminal apophysis in the palp. It differs from this species by the lack of the subterminal projection and by the distal part of the embolus hidden by the conductor in mesal view (
Fig.
19
). Unlike most of species, the embolus can be completely evident in ventral view (
Fig.
20
). The epigynum (
Figs
23–27
) of
E. ericae
n. sp.
resembles those of
E. photographica
(see
Poeta
et al
.
2010
a
:
158
, figures
32–34
) by the short and annulated scape and by the large posterior median plate. However,
E. ericae
n. sp.
presents two distinct circular projections on the median plate, in ventral and posterior views (
Figs 23, 24
), unlike
E. photographica
that has it flat.
Description.
Male
(
holotype
,
MCTP
14139
): Carapace orange, Anterior median eyes projected (
Figs 21, 22
), lateral eyes with long white setae, median posterior eyes with dark borders. Sternum pale yellow with gray border. Abdomen oval, longer than wide, dorsum pale white with gray folium, ventral surface light gray with the white median patch faint (
Fig.
22
). Legs pale yellow. Total length
3.9
. Carapace length
2.2
, width
1.8
. Leg formula
1243
. Length leg I: femur
2.5
; patella+tibia
2.9
; metatarsus
1.8
; tarsus
0.7
; total
7.9
. Patella+tibia II
2.4
; III
1.4
; IV
2.2
.
Female
(
paratype
,
MCTP
14139
): Carapace pale yellow with a white marking like a “V”, thoracic area with white setae. Posterior median eyes with black borders. Sternum pale yellow with gray border. Abdomen oval, longer than wide. Dorsum pale yellow, with a dark gray band that extends vertically through the abdomen, and a partial folium (
Fig.
28
). Venter with well-defined dark gray band from the epigastric furrow to the spinnerets and an elongated median white patch. Legs pale yellow. Total length
5.6
. Carapace length
2.3
, width
1.9
. Leg formula
1243
. Length leg I: femur
2.3
; patella+tibia
3.1
; metatarsus
1.9
; tarsus
0.8
; total
8.1
. Patella+tibia II
2.7
; III
1.4
; IV
2.1
.
Variation.
Male (n=
2
): carapace length
1.9–2.2
, width
1.6–1.8
. Female (n=
5
): total length
4.7–5.6
; carapace length
1.9–2.3
, width
1.4–1.9
. Carapace and legs orange. White marking on the carapace faint or absent. Abdomen subtriangular or oval.
Distribution.
Brazil
: Paraná and Rio Grande do Sul (
Fig.
85
).