On the taxonomic validity of Indian ground spiders: III. Genus Phaeocedus Simon, 1893 (Araneae: Gnaphosidae)
Author
Sankaran, Pradeep M.
Author
Caleb, John T. D.
Author
Sebastian, Pothalil A.
text
Journal of Natural History
2020
2020-10-28
54
21 - 22
1325
1336
http://dx.doi.org/10.1080/00222933.2020.1797201
journal article
10.1080/00222933.2020.1797201
1464-5262
5757827
Poecilochroa taborensis
(
Levy, 1999
)
(
Figure 3
(a,b,c,d))
Poecilochroa taborensis
Levy, 1999: 436
, figs 17–18 (for complete list of references, see
World Spider Catalog 2020
).
Phaeocedus poonaensis
Tikader, 1982: 362
, figs 158–163. New synonymy
Type material of
P. poonaensis
Holotype
female from
INDIA
:
Maharashtra
:
Pune
(formerly Poona):
Sakal Nagar
near
Pune University
(18°32
ʹ
49.83
ʹ
’N, 73°49
ʹ
12.79
ʹ
’E;
582 m
alt),
U.A. Gajbe
leg.,
22 March 1975
, repository NZC-ZSI (4493/18),
Kolkata
, examined.
Figure 3.
Phaeocedus poonaensis
Tikader, 1982
(NZC-ZSI-4493/18), holotype (=
Poecilochroa taborensis
Levy, 1999
). (a) female, dorsal view. (b) epigyne. (c) vulva. (d) label from type bottle. Scale bars a = 2 mm; b, c = 0.2 mm.
Justification of the synonymy
Tikader (1982)
described
P. poonaensis
based on a single female specimen collected in
Maharashtra
. The epigyne with a median depression and large, bean-like spermathecae of this species clearly indicates that it is a member of
Poecilochroa
Westring, 1874
(compare
Figure 3
(b,c) with
Chatzaki et al. 2002a
: figs 10–11;
Paik 1992
: figs 26–27). Detailed examination of the
holotype
of this species revealed that it has all the diagnostic features of
P. taborensis
: epigyne with a median triangular depression with straight lateral margins and large, bean-like spermathecae (compare
Figure 3
(b,c) with
Levy 1999
: figs 17–18;
Lissner and Chatzaki 2016
: figs 4A–E, 5A–B). Based on these observations, we propose to consider
P. poonaensis
a junior synonym of
P. taborensis
.
Supplementary description
Female
(
Figure 3
(a)): sternum with extensions to and between coxae. Cheliceral promargin with a low keel. Tarsi scopulated. Body length 6.76. Prosoma length 2.41, width 1.67. Opisthosoma length 4.35, width 2.55. Eye diameters: ALE 0.10. AME 0.14. PLE 0.13. PME 0.13. Eye interdistances: AME–ALE 0.03. AME–AME 0.09. AME–PME 0.14. PME–PLE 0.09. PME–PME 0.08. Clypeus height at AMEs 0.09, at ALEs 0.09. Length of chelicerae 0.68. Measurements of legs: I 4.73 [1.40, 0.92, 1.03, 0.87, 0.50], II 4.47 [1.35, 0.89, 0.96, 0.81, 0.46],
III
3.77 [1.14, 0.69, 0.69, 0.80, 0.45], IV 4.72 [1.47, 0.82, 0.93, 1.05, 0.46]. Leg formula: 4123.
Remarks
The ZSI collection has one glass bottle for
P. poonaensis
labelled as ‘holotype’ (4493/18), containing
one female
specimen in good condition. The same bottle has a small glass vial containing the dissected genitalia. There seems to be inconsistency in the registered number of this species:
holotype
label mentions ‘4493/18
ʹ
, while the original literature indicates the registered number as ‘4993/18
ʹ
.