On the Australian Bark Crab Spider Genus Stephanopis: Taxonomic Review and Description of Seven New Species (Araneae: Thomisidae: Stephanopinae)
Author
Machado, Miguel
Laboratório de Aracnologia-Escola de Ciências Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
Author
Teixeira, Renato Augusto
Laboratório de Aracnologia-Escola de Ciências Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
Author
Milledge, Graham A.
Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney NSW 2010, Australia
text
Records of the Australian Museum
2019
2019-09-18
71
6
217
276
journal article
10.3853/j.2201-4349.71.2019.1698
2201-4349
4653814
7EDBAB7F-0E3B-47D7-AA29-0906728ADA05
Stephanopis similis
Machado
sp. nov.
http://zoobank.org/NomenclaturalActs/
8A2D2DDD-B909-44CB-BB6E-4E0C98ED4D41
Figs 43–44
Holotype
♀
,
AMS KS
.30026,
Kanangra Boyd National Park
(Boyd plateau near to Jenolan Caves),
34°03'S
150°05'E
,
New South Wales
,
Australia
,
G. Hunt
,
6 June 1961
.
Paratypes
:
AMS KS
.121191,
1♀
,
Werrikimbe NP
,
31°11'56"S
152°10'23"E
,
E. Tasker
,
2 December 1997
;
AMS KS
.22518,
1♂
,
Jenolan Caves area
(playing fields),
33°49'S
150°02'E
,
G. Hunt
,
14 August 1979
;
AMS KS
.29993,
1♂
,
Kanangra Boyd National Park
(
Blood Filly Creek
),
33°51'S
150°03'E
,
New South Wales
,
Australia
,
M. Gray
&
G. Hunt
,
27 March 1976
.
Other material examined
.
Western Australia
:
AMS KS
.15423,
1♂
,
Normalup-Walpole National Park
(Big Tingle Tree),
34°57'S
116°16'E
,
M. Gray
,
15 February 1975
.
New South Wales
:
AMS KS
.128904,
1♀
,
Dorrigo NP
,
30°21'S
152°47'E
,
M. Gray
&
G. Cassis
,
4 February–9 April 1993
;
AMS KS
.102991,
1♀
,
Barrington Tops NP
,
32°03'43"S
151°34'39"E
,
G. Milledge
&
H. Smith
,
13 November–19 December 2007
.
Diagnosis
. Females and males of
S. similis
sp. nov.
resemble those of
S. cambridgei
by their elongated body, obovate opisthosoma, thin and long barbs on tibia and metatarsus I of male legs, and pair of prolateral setae on femur I (
Figs. 43A
and
44A
). However, they can be distinguished by their lower cephalic area (
Figs. 43B
and
44B
), shorter hyaline setae covering their entire body and pair of reddish-brown median stripes fused on the thoracic area instead of parallel bands that never touch each other. Females can be diagnosed by the wider than long atrium and CO covered by C-shaped lateral folds of the plate (
Fig. 43C
); copulatory ducts are short and straight, leading to the pair of the kidney-shaped spermathecae with glandular-heads positioned anteriorly (
Fig. 43D
). Males can be recognized by the subtriangular cymbium, short embolus and truncated RTA (
Fig. 44C
).
Description
.
Female
(AMS KS.30026): Prosoma orange with longitudinal reddish-brown stripes (a fused central pair and a lateral one on the margins of prosoma) (
Fig. 43A
); flattened, longer than wide and cephalic prominence absent (
Fig. 43B
); anterior eyes arranged in a recurved row and posterior ones in a straight row. Legs orange with reddishbrown spots; opisthosoma whitish-yellow with several black punctuations on dorsum (
Fig. 43A
).
Measurements
: eye diameters and interdistances: AME 0.07, ALE 0.19, PME 0.12, PLE 0.14, AME–AME 0.11, AME–ALE 0.07, PME–PME 0.23, PME–PLE 0.18, MOQ length 0.45, width 0.34; leg formula: 1-2-3-4: leg I—femur 3.58/ patella 1.93/ tibia 3.41/ metatarsus 2.36/ tarsus 0.87/ total 12.42; II—3.04/ 1.52/ 2.75/ 1.91/ 0.89 10.11; III—2.08/ 1.05/ 1.64/ 0.94/ 0.66/ 6.37; IV—2.75/ 1.11/ 2.24/ 1.39/ 0.75/ 8.24. Total body length 9.83; prosoma length 3.94, width 3.38; opisthosoma length 5.89; clypeus height 0.23; sternum length 1.76, width 1.57; gnathocoxae length 0.88, width 0.46; labium length 0.56, width 0.64.
Figure 43
.
Stephanopis similis
sp. nov.
, female (AMS KS.30026).
(A)
dorsal habitus;
(B)
front;
(C)
epigynal plate, ventral view;
(D)
epigynal plate/spermathecae.
Male
(AMS KS.29993): Except by the modified setae on tibiae I and II, all other somatic features are as in female. Tegulum membranose and hyaline (
Fig. 44C
); RTA stout, single-tipped with narrowed dorsal extremity (
Fig. 44D
).
Measurements
: eye diameters and interdistances: AME 0.07, ALE 0.19, PME 0.13, PLE 0.13, AME–AME 0.11, AME–ALE 0.05, PME–PME 0.15, PME–PLE 0.18, MOQ length 0.35, width 0.32; leg formula: 1-2-3-4: leg I—femur 3.28/ patella 1.64/ tibia 3.35/ metatarsus 2.40/ tarsus 0.98/ total 11.65; II—2.65/ 1.31/ 2.77/ 1.89/ 0.92 9.54; III—1.84/ 0.89/ 1.48/ 0.84/ 0.64/ 5.69; IV—2.26/ 0.97/ 1.97/ 1.30/
0.70/ 7.20. Total body length 7.14; prosoma length 3.21, width 2.74; opisthosoma length 3.93; clypeus height 0.20; sternum length 1.44, width 1.31; gnathocoxae length 0.67, width 0.37; labium length 0.44, width 0.47.
Etymology
. The specific epithet is a Latin masculine adjective that means “similar”, given to this species due to its striking resemblance with
S. cambridgei
.
Distribution
.
Western Australia
and
New South Wales
,
Australia
(
Fig. 49
).